🔧Utility

80C Investment Options computes total 80C deduction used, room left from eligible instruments, contributions. Runs ent…

Advance Tax Calculator takes salary, HRA, 80C deductions, regime choice and returns the matching advance tax result. R…

Alternative Minimum Tax (AMT) computes AMT owed beyond regular tax from AGI, AMT preferences, ISO exercise, filing sta…

Base32 Encoder / Decoder takes source value and source unit and returns the matching base32 encoder / decoder result. …

Capacity (mAh) / Load (mA) = hours. Discharge rate impacts capacity.

1 cup butter = 3/4 cup oil OR 1 cup applesauce (sweet bakes only).

Current caffeine in your system and time until sleep-safe.

Base weight + consumables. Aim 20% body weight max for backpacking.

Canada Carbon Rebate Calculator takes income, province, RRSP, TFSA contributions and returns the matching canada carbo…

Capacitor Charge Time takes mass, velocity, force, field strength and returns the matching capacitor charge time resul…

Gas + insurance + maintenance + depreciation. AAA: $0.70-1.20/mi.

5 CDs maturing yearly. Always have liquidity. Avg yield + flexibility.

Right blade diameter for the room based on area and ceiling height.

ChatGPT Prompt Library takes string, regex, format, count and returns the matching chatgpt prompt library result. Runs…

Child Tax Credit Calculator takes filing status, wages, deductions, credits and returns the matching child tax credit …

Childcare Cost Calculator takes height, weight, age, sex, activity and returns the matching childcare cost result. Run…

Compare the long-term cost of real vs artificial Christmas trees over 10 years.

A Clothing Size Converter converts data from one format to another using a deterministic mapping. It parses the input,…

COBRA Cost Calculator is a free us healthcare calculator that gives you a deterministic answer for cobra cost question…

Coffee Cost per Day takes ingredient quantity, servings, temperature and returns the matching coffee cost per day resu…

Cold Brew Calculator takes volume, gravity, hop bill, fermentation profile and returns the matching cold brew result. …

Sticker price - financial aid = real cost. Often 30-70% off sticker.

Color Converter takes source value and source unit and returns the matching color result. Runs entirely in your browse…

Color Picker takes source value and source unit and returns the matching color picker result. Runs entirely in your br…

Compound: interest on interest. Simple: only on principal.

A Couples Counseling Cost Calculator computes couples counseling cost from the inputs you provide.

Compute the right daily creatine monohydrate dose for loading or maintenance.

RR = runs / overs. Required RR = needed runs / overs left.

Build and decode cron schedules visually with plain-English descriptions.

CSV to JSON Converter takes source value and source unit and returns the matching csv to json result. Runs entirely in…

cURL to fetch Converter takes string, regex, format, count and returns the matching curl to fetch result. Runs entirel…

Encounter difficulty by party + monster CR. 5e XP thresholds.

File size / bandwidth = transfer time. 1 GB at 100 Mbps ≈ 80 sec.

Day of the Week Calculator takes two timestamps or a base plus delta and returns the matching day of the week result. …

Decimal to Text Converter takes source value and source unit and returns the matching decimal to text result. Runs ent…

A Depreciation Recapture Calculator computes depreciation recapture from the inputs you provide.

Device Info Checker takes string, regex, format, count and returns the matching device info checker result. Runs entir…

Above 70°F: muggy. Above 75: oppressive. 65-70: comfortable.

Dice Probability Calculator is a free games & brain calculator that gives you a deterministic answer for dice probabil…

L × W × H / divisor. Carriers charge actual OR DIM, whichever higher.

Discount Calculator computes discounted price, you save from original price, discount %. Runs entirely in your browser…

Estimate divorce costs by contested status, lawyer hours, mediation, and filing fees.

A Dog Vaccination Cost Calculator computes dog vaccination cost from the inputs you provide.

Steady investing through volatile markets. Lower variance vs lump sum.

Domestic Help Cost Calculator is a free au tax calculator that gives you a deterministic answer for domestic help cost…

Reinvest dividends → compound growth. Total return often double price-only.

Earned Income Tax Credit (EITC) takes filing status, wages, deductions, credits and returns the matching earned income…

Each magnitude = 32× more energy. M7 = 1000× M5.

Final value 13.25% + insertion + ad fee + payment = ~15-18% total.

Egg Substitution Calculator takes ingredient quantity, servings, temperature and returns the matching egg substitution…

Estimate monthly senior care costs by care type, hours of care needed, and your local cost tier.

Estimate your electricity bill based on units consumed and state tariff slabs.

See what an engagement shoot will cost based on locations, outfit changes, hours of coverage, and photographer tier.

EV = market cap + debt - cash. True takeover cost.

Two tax events: perquisite at exercise + capital gains at sale. India FY 2025-26 [1] .

ESPP Discount Calculator computes discounted price, you save from original price, discount %. Runs entirely in your br…

A Estate Planning Cost Calculator computes estate planning cost from the inputs you provide.

Underpaid? Pay 0.5%/month interest from due date.

Battery kWh ÷ charger kW = hours to full (with efficiency).

EV vs Gas TCO Calculator is a free climate & ecology calculator that gives you a deterministic answer for ev vs gas tc…

P(t) = P₀ × e^(rt). Doubles when rt = ln(2) ≈ 0.693.

Fixed Deposit and Recurring Deposit maturity values.

Fertility Window Calculator takes height, weight, age, sex, activity and returns the matching fertility window result.…

FICA Tax Calculator computes social Security, Medicare, additional Medicare from wages, self-employment income, filing…

Find safe stocking levels for your aquarium by tank volume and fish type.

Match line test to target species. Bass: 8-12 lb. Tuna: 50+ lb.

Distance ÷ avg speed + boarding/taxi/takeoff overhead.

Decide whether to fly or drive. Compare total cost and round-trip time side by side for your group.

Flour Substitution Calculator takes ingredient quantity, servings, temperature and returns the matching flour substitu…

Stud spacing 16 in OC standard. 2x4 vs 2x6.

French Press Calculator takes ingredient quantity, servings, temperature and returns the matching french press result.…

FSA Dependent Care Calculator computes tax saving vs forfeit risk from annual contribution, expected medical spend, ma…

Gallons to Liters Converter takes source value and source unit and returns the matching gallons to liters result. Runs…

GIS Calculator is a free ca retirement calculator that gives you a deterministic answer for gis questions. Runs entire…

Git Cheatsheet takes string, regex, format, count and returns the matching git cheatsheet result. Runs entirely in you…

Glycemic Load Calculator takes home price, down payment, rate, term, taxes and returns the matching glycemic load resu…

Goal Planner computes months to goal, shortfall if any from goal amount, current savings, monthly contribution, return…

Calculate gold value by weight, purity (karat), and current rate.

GPT Token Counter + Cost takes string, regex, format, count and returns the matching gpt token counter + cost result. …

GraphQL Formatter takes string, regex, format, count and returns the matching graphql formatter result. Runs entirely …

Gratuity Calculator computes gratuity payable, taxable portion from last basic salary, years of service, sector. Runs …

Typical first frost, last frost, and growing days by USDA zone.

GST Calculator computes GST amount, total with GST, reverse GST from pre-tax amount, GST rate. Runs entirely in your b…

GSTIN Validator computes GST amount, total with GST, reverse GST from pre-tax amount, GST rate. Runs entirely in your …

N = N₀ × (½)^(t/T). Radioactive decay, drug clearance, isotopes.

Headline Analyzer takes source text, target style, optional rules and returns the matching headline analyzer result. R…

Humidity makes heat worse. 95°F + 70% RH = 113°F feels-like.

Convert head circumference to a helmet size letter. Works for bicycle, motorcycle, ski, and skate helmets.

Compare current CTC vs new offer. See how much in-hand actually changes.

Home Buyers Plan (HBP) Calculator is a free ca real estate calculator that gives you a deterministic answer for home b…

Sale - mortgage - commissions - closing - taxes = your check.

Nightly rate + tax + resort fee + parking = real total.

Hours and minutes between two times. Optional break deduction.

Add up shifts for the week. Overtime kicks in over 40 hr in US.

For HRA exemption (Sec 10(13A)), only 4 cities count as Metro for the 50% rule.

HRA Exemption Calculator computes exempt HRA amount, taxable HRA from basic salary, HRA received, rent paid, city tier…

HSA Calculator computes triple tax advantaged balance from annual contribution, age, return rate, withdrawal age. Runs…

HSA vs FSA Calculator computes triple tax advantaged balance from annual contribution, age, return rate, withdrawal ag…

hsa vs fsa, hsa or fsa, which is better hsa or fsa, healthcare savings account comparison, fsa hsa differences hsa vs …

HTML Formatter takes string, regex, format, count and returns the matching html formatter result. Runs entirely in you…

HTML Minifier takes string, regex, format, count and returns the matching html minifier result. Runs entirely in your …

HTTP Status Codes Reference takes string, regex, format, count and returns the matching http status codes reference re…

EC = electrical conductivity. PPM = parts per million. Lettuce 600, tomato 1500.

I-Bond / TIPS Calculator computes tip amount, total, per person from bill amount, tip percentage, party size. Runs ent…

4 medical formulas (Devine, Robinson, Miller, Hamwi) compared.

IDR / SAVE Student Loan Calculator is a free us loans calculator that gives you a deterministic answer for idr / save …

Decode an IFSC code structure (Indian Financial System Code).

A Income from House Property computes income from house property from the inputs you provide.

Income Tax Calculator computes income tax owed, effective rate from income, deductions, regime, filing status. Runs en…

Income Tax Slabs - Reference takes salary, HRA, 80C deductions, regime choice and returns the matching income tax slab…

Indian Number Formatter computes indian-style lakhs/crores formatted string from number to format. Runs entirely in yo…

Inflation Adjusted Return computes inflation-adjusted future or past value from amount, inflation rate, years. Runs en…

What will $1,000 today be worth in 20 years?

(Likes + comments + saves) / followers × 100. >3 percent good, >6 percent excellent.

Variable rate jumps 2 percent? Test impact on monthly payment.

A Intermittent Fasting Calculator computes intermittent fasting from the inputs you provide.

International GPA Converter takes habit, frequency, target and returns the matching international gpa result. Runs ent…

Late fee owed on a past-due invoice using flat, percentage, or both.

Network address, broadcast, host range, and host count from IP/CIDR.

IR35 Inside vs Outside Calculator is a free uk contractor calculator that gives you a deterministic answer for ir35 in…

ISO / NSO Stock Options Tax is a free us equity calculator that gives you a deterministic answer for iso / nso stock o…

ITR Form Selector takes salary, HRA, 80C deductions, regime choice and returns the matching itr form selector result. …

Average US IVF cycle: $15,000-25,000. Multi-cycle plans save 20-30%.

JavaScript Formatter takes string, regex, format, count and returns the matching javascript formatter result. Runs ent…

JavaScript Keycode Finder takes string, regex, format, count and returns the matching javascript keycode finder result…

JavaScript Minifier takes string, regex, format, count and returns the matching javascript minifier result. Runs entir…

Eastward = harder. ~1 day per zone east, half day west.

JSON Diff Checker takes string, regex, format, count and returns the matching json diff checker result. Runs entirely …

JSON Minifier takes string, regex, format, count and returns the matching json minifier result. Runs entirely in your …

70% fat, 25% protein, 5% carbs daily targets.

Kids Screen Time Calculator takes height, weight, age, sex, activity and returns the matching kids screen time result.…

Kitchen Cabinet Cost Calculator takes ingredient quantity, servings, temperature and returns the matching kitchen cabi…

km/h to mph Converter takes source value and source unit and returns the matching km/h to mph result. Runs entirely in…

Self-pay 50-80 percent cheaper at direct labs (Quest, LabCorp).

Per load: laundromat $4-6 vs home $1-2. Capital cost matters.

Buyout vs market: arbitrage opportunity if market price > buyout.

Leave Encashment computes encashment value, taxable portion from salary, leave balance, employment status. Runs entire…

LED Series Resistor Calculator takes string, regex, format, count and returns the matching led series resistor result.…

Plan for 90+. Healthcare, lifestyle, family history all matter.

Line Counter takes source text, target style, optional rules and returns the matching line counter result. Runs entire…

A Liters ↔ Gallons Converter converts data from one format to another using a deterministic mapping. It parses the inp…

LTCG Calculator (FY 2025-26) takes salary, HRA, 80C deductions, regime choice and returns the matching ltcg calculator…

29.53-day synodic cycle. Reference: Jan 6, 2000 = new moon.

Daily protein, carbs, fat from calorie target and goal preset.

MAGI Calculator (Modified AGI) takes filing status, wages, deductions, credits and returns the matching magi calculato…

Twin → Full → Queen → King → California King. Bed for room.

Medicare IRMAA Calculator is a free us healthcare calculator that gives you a deterministic answer for medicare irmaa …

Medicare Part D Cost is a free us healthcare calculator that gives you a deterministic answer for medicare part d cost…

A Menopause Symptom Calculator (MRS) computes menopause symptom calculator (mrs) from the inputs you provide.

Combine multiple PDF files into one PDF in your browser. Drop in order, click merge. Powered by pdf-lib.

Meta Tag Analyzer is a free seo calculator that gives you a deterministic answer for meta tag analyzer questions. Runs…

a mod n = remainder when a is divided by n.

See how much you spend on dating each month and how it adds up annually.

DIY: $0.50-1.50/lb local · Movers: $1-2/lb local · Long distance double.

Music Tempo (BPM) Calculator takes project parameters or constraints and returns the matching music tempo (bpm) result…

Notes - free private notebook is a free productivity calculator that gives you a deterministic answer for notes - free…

Cost of leaving early - what you pay (or new employer reimburses).

Number Base Converter takes source value and source unit and returns the matching number base result. Runs entirely in…

Arithmetic progression (AP), geometric progression (GP), Fibonacci - terms + sum.

Number to Indian Words computes number written in words, Indian English from number to convert. Runs entirely in your …

OAS Clawback Calculator computes estimated BAC, time to sober from drinks consumed, weight, sex, hours since first dri…

Compare three job offers side-by-side. Includes tax, joining bonus, ESOPs.

Refractometers read wrong after fermentation - alcohol throws them off.

DIY: $30-50 · Quick lube: $30-90 · Dealer: $60-150.

Old vs New Regime computes tax under each regime, savings from choice from salary, deductions, exemptions. Runs entire…

Open Graph Preview is a free seo calculator that gives you a deterministic answer for open graph preview questions. Ru…

Overtime Pay Calculator is a free career & income calculator that gives you a deterministic answer for overtime pay qu…

Validate PAN card format (10 chars: 5 letters + 4 digits + 1 letter).

Pangram Solver is a free word lookup calculator that gives you a deterministic answer for pangram solver questions. Ru…

Compare daily hourly parking against a monthly pass. See which is cheaper and how much you save each month.

A Passport Renewal Cost Calculator computes passport renewal cost from the inputs you provide.

Password Strength Checker takes token quantity, price, fees, holding period and returns the matching password strength…

Patreon takes 5-12% + payment fees. Net ~85% of patron $.

2.99% + $0.49 standard. International adds 1-3%.

PF Withdrawal Rules takes salary, HRA, 80C deductions, regime choice and returns the matching pf withdrawal rules resu…

Decode 6-digit India Postal Index Number structure.

PPI = √(W² + H²) / diagonal. Retina = 220+ PPI typical.

Compare $ per square inch. 14" $15 vs 18" $19 = better deal.

Pre-Medicare Healthcare Cost is a free us healthcare calculator that gives you a deterministic answer for pre-medicare…

Present Value Calculator takes contribution, return, time horizon, inflation and returns the matching present value re…

P(A and B), P(A or B), P(A | B) - all in one tool.

Profit Margin / Markup takes MRR, ARR, churn, customer count and returns the matching profit margin / markup result. R…

Typical: 8-12% of rent + leasing fee + maintenance markup.

PSLF Calculator computes months to forgiveness, lifetime cost from income, family size, balance, qualifying payments m…

Hours per pay period × pay periods = annual days. Cap at use-it-or-lose-it.

A px / rem / em Converter converts data from one format to another using a deterministic mapping. It parses the input,…

QBI Deduction Calculator (Section 199A) takes filing status, wages, deductions, credits and returns the matching qbi d…

Quarterly Estimated Tax Calculator takes filing status, wages, deductions, credits and returns the matching quarterly …

Quebec QPP vs CPP Comparison is a free ca retirement calculator that gives you a deterministic answer for quebec qpp v…

Avg adult: 200-300 wpm. Speed-readers 600+. Comprehension matters.

Reading Time Calculator takes source text, target style, optional rules and returns the matching reading time result. …

Movers + travel + housing transition + first-month deposits = full cost.

Remove Duplicate Lines takes source text, target style, optional rules and returns the matching remove duplicate lines…

Remove Empty Lines takes source text, target style, optional rules and returns the matching remove empty lines result.…

Remove Line Breaks takes source text, target style, optional rules and returns the matching remove line breaks result.…

Rent Receipt Generator takes format and optional constraints and returns the matching rent receipt generator result. R…

Resistor Color Code Calculator takes string, regex, format, count and returns the matching resistor color code result.…

Restaurant Bill Split takes habit, frequency, target and returns the matching restaurant bill split result. Runs entir…

A Rideshare vs Car Ownership Calculator computes rideshare vs car ownership from the inputs you provide.

A Ring Size Converter converts data from one format to another using a deterministic mapping. It parses the input, tra…

RMD Calculator takes filing status, wages, deductions, credits and returns the matching rmd result. Runs entirely in y…

Rotate an image 90 / 180 / 270 degrees and optionally flip horizontally or vertically.

At vest: ordinary income tax. At sale: capital gains on appreciation.

115 / rate% = years to triple money. Quick mental.

Estimate running economy in ml O2 per kg per km.

Commission earned including accelerator above quota and effective payout rate.

Pre-tax + rate = total. Or back out tax from total.

Scientific Calculator computes evaluated numeric result from expression with operators and functions. Runs entirely in…

A Screen Resolution Comparison computes screen resolution comparison from the inputs you provide.

A Section 179 Deduction Calculator computes section 179 deduction from the inputs you provide.

Self-Employment Tax Calculator takes filing status, wages, deductions, credits and returns the matching self-employmen…

Sentence Case Converter takes source text, target style, optional rules and returns the matching sentence case result.…

SEO Title + Meta Length is a free seo calculator that gives you a deterministic answer for seo title + meta length que…

Budget your shed build with size, material, and foundation choices.

A Shoe Size Converter converts data from one format to another using a deterministic mapping. It parses the input, tra…

2.5 GPM × 10 min = 25 gal × $0.005 = $0.125 per shower.

A Ski Difficulty Converter converts data from one format to another using a deterministic mapping. It parses the input…

Pack a day for 30 years = $80,000+ direct + $200K+ if invested.

A Social Security Benefit Calculator computes social security benefit from the inputs you provide.

Social Security Claiming Age takes contribution, return, time horizon, inflation and returns the matching social secur…

Up to 50% of higher earner's benefit. Or own benefit if higher.

Sod Calculator takes length, area, volume, material rate and returns the matching sod result. Runs entirely in your br…

Estimate soffit material, fascia linear feet, and fasteners.

Solar Panel Tilt Angle is a free climate & ecology calculator that gives you a deterministic answer for solar panel ti…

Solar pays back in 6-10 yrs. Utility just rises. Long-term solar wins.

Special Characters takes source text, target style, optional rules and returns the matching special characters result.…

A Speeding Ticket Cost Calculator computes speeding ticket cost from the inputs you provide.

Split a PDF by page range - extract pages 1-3, 5, 7-10 into one PDF or separate files.

SQL Formatter / Beautifier takes string, regex, format, count and returns the matching sql formatter / beautifier resu…

Square Feet to Square Meters Converter takes source value and source unit and returns the matching square feet to squa…

Earn over $23,400 (2025) before FRA? $1 deducted per $2 over.

Year-wise standard deduction for salaried employees (Sec 16(ia)).

Statistics Calculator computes mean, median, mode, std dev, variance, range from numeric dataset (comma or newline sep…

Statutory Bonus takes salary, HRA, 80C deductions, regime choice and returns the matching statutory bonus result. Runs…

STCG Calculator (FY 2025-26) takes salary, HRA, 80C deductions, regime choice and returns the matching stcg calculator…

Inherit asset? Cost basis = value at death. Massive tax savings.

Stock Options Tax Calculator takes filing status, wages, deductions, credits and returns the matching stock options ta…

Stock Split Calculator takes contribution, return, time horizon, inflation and returns the matching stock split result…

Stripe Fee Calculator takes MRR, ARR, churn, customer count and returns the matching stripe fee result. Runs entirely …

Average household: $237/month in subscriptions. Most could cut 30%.

Sukanya Samriddhi Yojana (SSY) takes salary, HRA, 80C deductions, regime choice and returns the matching sukanya samri…

Plan a summer camp budget with day or overnight pricing, tier, and a sibling discount.

Pre-weight + fluid intake - post-weight = sweat lost (in mL).

T1135 Foreign Property Calculator takes income, province, RRSP, TFSA contributions and returns the matching t1135 fore…

Pay debt > Roth IRA > emergency fund > spend.

$3K of harvested losses offsets ordinary income - extra carries forward.

Surge pricing can flip the math instantly.

TCS on Foreign Remittance (LRS) takes home price, down payment, rate, term, taxes and returns the matching tcs on fore…

Right water temp and steep time for every tea type.

A Texas Hold'em Odds Calculator computes texas hold'em odds from the inputs you provide.

Text Case Converter takes source text, target style, optional rules and returns the matching text case result. Runs en…

Text Emoticons takes source text, target style, optional rules and returns the matching text emoticons result. Runs en…

Text Repeater takes source value and source unit and returns the matching text repeater result. Runs entirely in your …

Text Symbols takes source text, target style, optional rules and returns the matching text symbols result. Runs entire…

Text to Binary Converter takes source value and source unit and returns the matching text to binary result. Runs entir…

Text to Decimal Converter takes source value and source unit and returns the matching text to decimal result. Runs ent…

Text to Hex Converter takes source value and source unit and returns the matching text to hex result. Runs entirely in…

A Thanksgiving Turkey Size Calculator computes thanksgiving turkey size from the inputs you provide.

$0.02-0.04 per 1,000 views (low). Brand deals + lives + shop pay much more.

Add or subtract hours, minutes, seconds with carry handling.

Time Card / Timesheet Calculator is a free work calculator that gives you a deterministic answer for time card / times…

Hash + timestamp any file. Save a receipt as JSON.

Tip Pool Calculator computes tip amount, total, per person from bill amount, tip percentage, party size. Runs entirely…

N players → N-1 matches. log₂(N) rounds. Power of 2 ideal.

GCWR - vehicle curb - cargo - passengers = real tow capacity.

Door-to-door time often beats raw flight time.

Value per point varies. Premium cabin transfers: 2-5¢/point.

Estimated hours and total cost to prune one or more trees.

A TSA PreCheck vs Global Entry Calculator computes tsa precheck vs global entry from the inputs you provide.

TypeScript Formatter takes string, regex, format, count and returns the matching typescript formatter result. Runs ent…

Hourly gross - gas - depreciation - tax = real $/hour.

URL Parser takes string, regex, format, count and returns the matching url parser result. Runs entirely in your browse…

US Estate Tax Calculator takes filing status, wages, deductions, credits and returns the matching us estate tax result…

User Agent Parser takes string, regex, format, count and returns the matching user agent parser result. Runs entirely …

UV 6+ = high risk. Reapply SPF 30+ every 2 hours outdoors.

Adjust withdrawal up/down with portfolio. Avoids sequence risk.

Jack Daniels' VDOT predicts paces from race time. Train at 88% E, 95% T.

Vegetable Garden Yield Calculator takes project parameters or constraints and returns the matching vegetable garden yi…

Re-hash a file and compare to a timestamp receipt.

Shares vested today plus a month-by-month schedule for any plan.

Find your daily vitamin B12 RDA by age, life stage, and dietary pattern.

Most adults need 1,000-4,000 IU/day to reach optimal 30-50 ng/mL.

Tank: $1,000-2,500 · Tankless: $2,000-5,000 · Heat pump: $2,500-4,500.

A Watts to Amps converts Watts into Amps directly in your browser. It parses the source format, applies the standard m…

A Wedding Photographer Cost Calculator computes wedding photographer cost from the inputs you provide.

Recalculate TDEE and find a new deficit to break the stall.

Wind makes cold worse. -20°F + 30 mph = -47°F feels-like.

Wingdings Translator takes source text, target style, optional rules and returns the matching wingdings translator res…

Word Finder is a free word lookup calculator that gives you a deterministic answer for word finder questions. Runs ent…

XML Formatter takes string, regex, format, count and returns the matching xml formatter result. Runs entirely in your …

XML to JSON Converter takes string, regex, format, count and returns the matching xml to json result. Runs entirely in…

YAML Formatter takes string, regex, format, count and returns the matching yaml formatter result. Runs entirely in you…

Views × RPM ÷ 1000 = estimated earnings.

Recite pi. Test mode hides digits, you type from memory.

Touch typing drills graduated by row and difficulty. Track per-key accuracy.

Type the passage. We measure WPM, accuracy, and consistency in real time.

Type a cron expression - get plain English.

♿ WCAG Contrast Checker takes source value and source unit and returns the matching ♿ wcag contrast checker result. Ru…

Click any element to see properties.

Add habits. Mark daily. Build streaks.

Drill 2× to 20× with per-table tracking.

❌ Tic-Tac-Toe takes game state, settings, opponent profile and returns the matching ❌ tic-tac-toe result. Runs entirel…

Pick operations. Solve fast. Score climbs as questions get harder.

🇮🇳 Section 80D Health Insurance Tax Deduction takes coverage, deductible, term, age and returns the matching 🇮🇳 se…

A 🇮🇳 Section 87A Rebate Calculator (India) computes 🇮🇳 section 87a rebate calculator (india) from the inputs you p…

Hindi · German · French · Russian.

🌸 Mandala Generator takes format and optional constraints and returns the matching 🌸 mandala generator result. Runs …

Sketch with mouse or touch. Save as PNG.

Click the COLOR of the text, not the word. 30-second challenge.

Multiple aim training modes. Flick : rapid target switching. Tracking : keep cursor on moving target. Gridshot : hit f…

🎯 Bingo Card Generator takes format and optional constraints and returns the matching 🎯 bingo card generator result.…

Magic 8-Ball: a fortune-telling toy invented in 1946. Ask a yes/no question, shake, and a 20-sided die inside reveals …

4×4 grid. Find words. 3 minutes.

Flip cards, find pairs. Track moves and time.

🎶 BPM Finder takes project parameters or constraints and returns the matching 🎶 bpm finder result. Runs entirely in …

🎹 Piano Keyboard takes project parameters or constraints and returns the matching 🎹 piano keyboard result. Runs enti…

Paddle vs AI or 2-player. First to 10.

Tap / Space to flap. Clear the pipes.

Numbers appear, then hide. Tap them in order.

Reflex game from arcades. Moles pop up randomly - tap them before they hide. Tests reaction time and hand-eye coordina…

Memorize the lit squares, then click them all. Grid grows each level.

Click a tile - toggles it and its 4 neighbors. Turn all off.

Reveal all safe cells. Right-click to flag suspected mines.

💪 Tabata HIIT Timer takes two timestamps or a base plus delta and returns the matching 💪 tabata hiit timer result. R…

Practice typing code. Real syntax with brackets, indentation, and symbols.

📚 Rubik's Cube Tutor takes numbers, ranges, parameters and returns the matching 📚 rubik's cube tutor result. Runs en…

Type any text you provide. Useful for: practicing important emails, memorizing speeches, transcription practice, learn…

📡 NATO Alphabet takes project parameters or constraints and returns the matching 📡 nato alphabet result. Runs entire…

Text ⇄ Morse with audio playback.

Unscramble the letters. Race the clock.

Shift letters by N. Encode and decode.

🔠 ASCII Art Generator takes format and optional constraints and returns the matching 🔠 ascii art generator result. R…

Remember the number, then type it. Grows by one digit each round.

Drop tokens. First to 4-in-a-row wins.

Use number clues. Fill cells. Reveal picture.

Move all discs to the right. Big can't rest on small.

Inhale 4s, hold 7s, exhale 8s. Sleep aid.

16×16 / 32×32 grid editor. Save as PNG.

🧊 Rubik's Cube 3D Sim takes numbers, ranges, parameters and returns the matching 🧊 rubik's cube 3d sim result. Runs …

🧊 Rubik's Cube Timer takes numbers, ranges, parameters and returns the matching 🧊 rubik's cube timer result. Runs en…

🧘 Meditation Timer takes two timestamps or a base plus delta and returns the matching 🧘 meditation timer result. Run…

🧠 N-Back Test computes estimated BAC, time to sober from drinks consumed, weight, sex, hours since first drink. Runs …

Watch the pattern, then click in the same order. The sequence grows each round.

Slide tiles. Arrange 1-15 in order.

Bounce the ball. Break all bricks.

🪙 Coin Flip takes format and optional constraints and returns the matching 🪙 coin flip result. Runs entirely in your…

Guess letters one at a time. 6 wrong guesses and you lose.

Inhale 4s, hold 4s, exhale 4s, hold 4s. Repeat.

Freelancer True Hourly Rate Calculator is a free freelance calculator that gives you a deterministic answer for freela…

Canada Express Entry CRS Calculator 2026 is a free ca immigration calculator that gives you a deterministic answer for…

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