Both Body Fat Calculator and Body Fat 3-Site Skinfold Calculator sit in the Health & Medical category. They share an underlying model (us navy body-fat formula) but target different outcomes: Body Fat on one side, Body Fat 3-Site Skinfold on the other.
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Body Fat Calculator computes body fat directly in your browser. It is built for body fat estimate and uses us navy body-fat formula based on the inputs you provide.
Body Fat 3-Site Skinfold Calculator computes body fat 3-site skinfold directly in your browser. It is built for body fat estimate and uses us navy body-fat formula based on the inputs you provide.
| Attribute | Body Fat Calculator | Body Fat 3-Site Skinfold Calculator |
|---|---|---|
| Category | Health & Medical | Health & Medical |
| Primary input | Sex, age, weight, neck, waist, hip | Sex, age, weight, neck, waist, hip |
| Primary output | Body fat %, category | Body fat %, category |
| Math model | US Navy body-fat formula | US Navy body-fat formula |
| Best for | Body fat estimate | Body fat estimate |
| Runs in browser | Yes, no data leaves your device | Yes, no data leaves your device |
| Login required | No | No |
| Cost | Free | Free |
Under the hood, Body Fat Calculator uses us navy body-fat formula fed by sex, age, weight, neck, waist, hip. Body Fat 3-Site Skinfold Calculator uses us navy body-fat formula fed by sex, age, weight, neck, waist, hip. The two are not substitutes; they answer adjacent questions in your workflow.
Pick Body Fat Calculator when your question is about body fat and your inputs are sex, age, weight, neck, waist, hip. Pick Body Fat 3-Site Skinfold Calculator when the question shifts to body fat 3-site skinfold and your inputs become sex, age, weight, neck, waist, hip. If neither matches what you need, the Health & Medical category hub lists every tool we have for related questions.
Your task is personal health metric estimation and you already have height, weight, age, sex, activity. The output you need is a score, range, daily target.
Your task is personal health metric estimation and you have height, weight, age, sex, activity. The output you need is a score, range, daily target.
Browse the Health & Medical hub for related tools, or the Health & Medical hub for the other side.
Body Fat Calculator is designed to answer questions about body fat using sex, age, weight, neck, waist, hip. Body Fat 3-Site Skinfold Calculator is designed for body fat 3-site skinfold using sex, age, weight, neck, waist, hip. They are complementary tools that target different inputs and outputs.
Use Body Fat Calculator when your task is body fat estimate and you need a body fat %, category from sex, age, weight, neck, waist, hip.
Use Body Fat 3-Site Skinfold Calculator when the question is body fat estimate and your inputs are sex, age, weight, neck, waist, hip. The result is a body fat %, category.
Yes. Both run entirely in your browser, require no login, and are free to use without limits. Your inputs are not transmitted to any server.
Accuracy depends on the inputs you provide, not on the tool. Body Fat Calculator uses us navy body-fat formula and is accurate for body fat when its inputs are correct. Body Fat 3-Site Skinfold Calculator uses us navy body-fat formula and is accurate for body fat 3-site skinfold under the same condition.