--- title: "Body Fat Calculator | Body Composition Estimate Tool | XTRAW Tools" description: "Estimate body fat percentage from body measurements with a free browser-based body fat calculator from XTRAW Tools." url: "https://xtraw.com/tools/calculators/health-fitness-calculators/body-fat-calculator" date: "2026-05-22T01:22:41+00:00" language: "en-GB" --- [Water Intake Calculator](https://xtraw.com/tools/calculators/health-fitness-calculators/water-intake-calculator)[BAC Calculator](https://xtraw.com/tools/calculators/health-fitness-calculators/bac-calculator) [![Body Fat Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/xtraw-body-fat-calculator-360x360.jpg)](https://xtraw.com/images/virtuemart/product/xtraw-body-fat-calculator-360x360.jpg "Body Fat Calculator from XTRAW Tools") popular [Back to: Health & Fitness Calculators](https://xtraw.com/tools/calculators/health-fitness-calculators "Health & Fitness Calculators") # Body Fat Calculator Estimate body fat percentage from body measurements. Use this free browser-based body fat calculator from XTRAW Tools. **Body Fat Calculator** helps you estimate body fat percentage from body measurements. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step. ## How to Use the Body Fat Calculator 1. Enter the required calculator inputs shown in the form. 2. Review the measurement, date, time, activity, body, nutrition, or training assumptions. 3. Run the calculator, then adjust one input at a time to compare scenarios. ## What This Calculator Helps With Estimate body fat percentage from body measurements. It is designed for fitness users, body composition trackers, wellness users, and health-conscious adults who want a fast, browser-based estimate before relying on a doctor, dietitian, trainer, coach, pregnancy care provider, public safety source, or other professional source. - Sex: Male - Height: 70 in - Waist: 36 in - Neck: 16 in ## Common Uses People use this calculator when they need a quick way to estimate health, wellness, fitness, nutrition, timing, body composition, or training values from simple inputs. - **Health Estimate:** Create a quick wellness, fitness, nutrition, pregnancy, or body-measurement estimate from entered values. - **Measurement:** Use body, time, distance, nutrition, or training measurements to calculate a clear numeric result. ## Formula or Method Uses a body measurement method such as the U.S. Navy formula with waist, neck, height, and sex. ## Example **Example inputs:** Sex: Male; Height: 70 in; Waist: 36 in; Neck: 16 in **Example result:** Using the default inputs, estimated body fat is about 19.4%. ## Related Tools - [BMI Calculator](https://xtraw.com/tools/bmi-calculator) - [Lean Body Mass Calculator](https://xtraw.com/tools/lean-body-mass-calculator) - [Ideal Weight Calculator](https://xtraw.com/tools/ideal-weight-calculator) - [BMR Calculator](https://xtraw.com/tools/bmr-calculator) - [TDEE Calculator](https://xtraw.com/tools/tdee-calculator) - [Macro Calculator](https://xtraw.com/tools/macro-calculator) ## Body Fat Calculator FAQ ### Is the Body Fat Calculator free? Yes. This calculator is free to use on XTRAW Tools. ### Do I need to create an account? No. XTRAW tools are designed for browser-based use without requiring an account. ### Are the results exact? Results may be estimates depending on the inputs, formula, and purpose of the calculator. Always verify important results before relying on them. **Disclaimer:** This calculator is provided for general informational and convenience purposes only. It is not legal, financial, medical, tax, investment, insurance, accounting, pregnancy, health, fitness, nutrition, safety, or professional advice. Always verify important results with a qualified professional or authoritative source before making decisions. **Related Products** ![Tooltip]() [![BMI Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-bmi-calculator-360x360_230x230.jpg) BMI Calculator](https://xtraw.com/tools/calculators/health-fitness-calculators/bmi-calculator "BMI Calculator") Calculate body mass index from height and weight. Use this free browser-based bmi calculator from XTRAW Tools. Custom prototype for related products [![Lean Body Mass Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-lean-body-mass-calculator-360x360_230x230.jpg) Lean Body Mass Calculator](https://xtraw.com/tools/calculators/health-fitness-calculators/lean-body-mass-calculator "Lean Body Mass Calculator") Estimate lean body mass from body weight and body fat percentage. Use this free browser-based lean body mass calculator from XTRAW Tools. Custom prototype for related products [![Ideal Weight Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-ideal-weight-calculator-360x360_230x230.jpg) Ideal Weight Calculator](https://xtraw.com/tools/calculators/health-fitness-calculators/ideal-weight-calculator "Ideal Weight Calculator") Estimate ideal body weight from height and sex using common reference formulas. Use this free browser-based ideal weight calculator from XTRAW Tools. Custom prototype for related products [![BMR Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-bmr-calculator-360x360_230x230.jpg) BMR Calculator](https://xtraw.com/tools/calculators/health-fitness-calculators/bmr-calculator "BMR Calculator") Estimate basal metabolic rate from age, sex, height, and weight. Use this free browser-based bmr calculator from XTRAW Tools. 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