About
Churn rate = customers lost / customers at start. SaaS healthy: <5% monthly. World-class B2B: 5-7% annual. B2C consumer: 5-7% monthly typical. Compound: 5%/mo = ~46% annual. Net retention rate = (start + expansion - churn) / start.
Investors care about TWO churn figures together. Logo churn (this calculator) counts headcount of cancelled accounts and is the relevant figure for sales productivity and product-fit signals. Gross revenue churn dollarises that loss; net revenue retention (NRR) subtracts expansion (upsell, seat additions, price increases) from gross churn and is the single number cited at IPO. Top-quartile public SaaS in 2026 reports NRR above 115%; the 2024-26 macro tightening cycle has pushed median NRR for $50M-$500M ARR SaaS from ~120% (2021 peak) to about 105-108%, primarily through downsells and seat reductions rather than full cancellations.
Formula
The annualisation uses geometric compounding, not simple multiplication. 5% monthly churn compounds to (1-0.05)^12 = 0.5404 retention, i.e. 46% annual churn – not 60%. Many B2C operators publish "annual churn" linearly multiplied (5% × 12 = 60%); for short-horizon comparisons this is fine but for cohort-LTV math you MUST use geometric compounding or LTV will be overstated by 25-30%.
Common churn pitfalls
- Mixing start-of-period and end-of-period denominators: Cohort-style churn uses start-of-period (consistent denominator). "Trailing 30-day churn" published by dashboards often uses a moving denominator that drifts up if you're growing fast, masking churn. Stick to one definition across boards.
- Excluding involuntary churn: Payment-failure churn (failed credit cards, dunning) often accounts for 20-40% of total SaaS churn for B2C products. Excluding it makes retention look better but means missed dunning revenue isn't being recovered. Include involuntary in gross churn; track separately for dunning effectiveness.
Frequently asked questions
What's the difference between gross and net revenue retention?
Gross revenue retention (GRR) = (start MRR - churn MRR - downgrade MRR) / start MRR. Caps at 100% by definition. Net revenue retention (NRR) = GRR + (expansion MRR / start MRR), and CAN exceed 100% when upsells outweigh losses. Investors weight NRR highest because it shows whether existing customers grow faster than they leave. Bessemer/OpenView 2026 SaaS benchmarks: GRR 90%+ is healthy, 95%+ excellent; NRR 110% is the venture-funded standard.
How do I cut SaaS churn fast?
Three actions with highest documented ROI: (1) Fix involuntary churn first via smart retries and pre-dunning emails – this routinely recovers 30-50% of failed-payment churn within 4 weeks. (2) Trigger CSM outreach at usage-drop signals before the customer asks to cancel; pre-emptive contact at 60% usage drop has cut quarterly churn by 10-20% in case studies. (3) Add an annual prepay discount (10-20% off) – B2B SaaS sees annual customers churn at one-fourth the monthly rate because the cognitive switching cost is consolidated. None of these requires building new product features.
How accurate is the Churn Rate Calculator?
It applies the standard formula. Accuracy is limited only by your input precision. For decisions with material consequences (taxes, medical, legal, structural), use the result as a starting point and verify with a qualified professional in the relevant field.
Is the Churn Rate Calculator free to use?
Yes. 100% free, no signup, no payment, no API key. The site is funded by display ads around the tool but not inside the calculation flow.
Are my inputs saved anywhere?
No. All inputs stay in your browser tab. Closing the tab discards them. The site uses Google Analytics for traffic measurement (anonymized) but the analytics never see what you type into the form.
Can I use the Churn Rate Calculator on my phone?
Yes. The tool is responsive and tested on iOS Safari, Android Chrome, and major desktop browsers. Touch targets meet Apple's 44pt and Google's 48dp minimum.
Does the Churn Rate Calculator work offline?
Yes. Once the page has loaded, it works without internet. The calculation runs in JavaScript on your device.
How do I report a bug or suggest improvement to the Churn Rate Calculator?
Email hi@3tej.com with the URL of this page and a description of what you saw vs expected. We typically respond within 72 hours.
Can I share results from the Churn Rate Calculator?
Take a screenshot or copy the output. The page doesn't generate shareable URLs for specific calculations - inputs stay in your browser only.
Why are the results different from another churn rate tool?
Most likely: different formula assumptions, different default values, different rounding rules, or different applicable rates. Check the methodology if both tools document it. Both can be valid for different scenarios.
Is the Churn Rate Calculator accurate?
The Churn Rate Calculator applies the standard formula for churn rate. Accuracy is limited only by your input precision. For decisions with material consequences, use the result as a starting point and verify with a qualified professional or the relevant official source.
Is the Churn Rate Calculator free?
Yes. 100% free, no signup, no payment, no API key. The site is funded by display ads that appear around the tool but not inside the calculation flow.
Are my inputs saved?
No. Inputs stay in your browser tab. Closing the tab discards them. The site uses Google Analytics for traffic measurement (anonymized) but does not see what you type into the form.
How to use the Churn Rate Calculator
The Churn Rate Calculator is a browser-based tool that runs entirely on your device. Inputs you enter never reach a server - all calculations happen client-side in JavaScript. This means:
- Privacy: nothing is logged, sent, or stored by 3Tej. Inputs disappear when you close the tab.
- Speed: results update as you type. No network round trip.
- Offline use: once the page is cached, it works without internet.
- No signup: no account, no email, no rate limits.
Step by step
- Enter your inputs in the form above. Each field is labeled with its unit (currency, percent, kg, etc.) and the expected range.
- Read the result as it updates. The number reflects the formula commonly accepted in Churn Rate-related calculations.
- Adjust to see sensitivity: change one input at a time and watch how the output moves. This is the fastest way to understand which variable matters most.
- Copy or screenshot the result for later reference. The page state persists for the session if your browser allows it.
When you would use this
- Quick estimates: when you need a number now and don't want to open a spreadsheet.
- Sensitivity analysis: testing how a result changes as inputs vary, before committing to a real-world decision.
- Comparison: running the same calculation with different inputs to compare options side by side.
- Learning: building intuition for how the underlying math behaves.
- Documentation: capturing a snapshot of inputs and outputs at a point in time.