Body Fat Calculator
Estimate your body fat percentage using the US Navy tape method from your height, neck, waist (and hip for women).
Measurement guide & category ranges
| Measurement | How to measure |
|---|---|
| Neck | Just below the larynx, tape horizontal — do not flex. |
| Waist | At the navel (men) or narrowest point (women), relaxed, exhale normally. |
| Hip (women) | Widest part of hips/buttocks, feet together. |
| Height | Stand straight, no shoes — same time of day for consistency. |
| Category | Men | Women |
|---|---|---|
| Essential | < 6% | — |
| Athletic | 6–14% | < 14% |
| Fitness | 14–18% | 14–21% |
| Average | 18–25% | 21–25% |
| High / Obese | > 25% | > 25% |
BMI category? BMI calculator · daily calories: BMR calculator · macros: Macro calculator.
How to use
Choose your sex and units, then enter your height and circumference measurements. Body fat percentage, the category gauge, and (with weight) your fat and lean mass update instantly.
FAQ
What can I use Body Fat Calculator for?
Body Fat Calculator is useful when you need to estimate your body fat percentage using the US Navy tape method from your height, neck, waist (and hip for women). It is meant for quick checks, everyday workflows and practical tasks where a fast browser-based result is enough.
How do I use Body Fat Calculator correctly?
Enter accurate body, time, activity or goal values. The estimate is only as good as the measurements you provide.
What input does Body Fat Calculator need?
Use the fields shown in the tool and keep the input close to the real case you want to solve. If the page includes examples or presets, start with those to understand the expected format.
What result does Body Fat Calculator give me?
The tool returns health-related estimates, categories or target ranges based on the inputs shown on the page. In most cases the output updates instantly and can be copied, downloaded or used as a reference for your next step.
How accurate is Body Fat Calculator?
Use the result as a practical reference, not as medical advice. Personal health decisions should be checked with a qualified professional.
Is my data uploaded when I use Body Fat Calculator?
The tool is designed to run in your browser, so ordinary inputs are processed locally unless a page explicitly states that it needs an online lookup.
What common mistakes should I avoid with Body Fat Calculator?
Avoid guessing measurements, mixing metric and imperial units, or treating an estimate as a diagnosis.
What related tasks can Body Fat Calculator help with?
Body Fat Calculator is intended for use cases related to "body fat calculator" and nearby needs such as "body fat percentage". For best results, follow the labels, examples and options on the page.
What are the limits of Body Fat Calculator?
It is a planning tool, not a professional advisor. Local rules, personal circumstances and real-world conditions can change the final answer.
When should I double-check the output from Body Fat Calculator?
Double-check the output before changing health, diet, training or medication decisions.