Calculate body fat percentage using the US Navy circumference method. Enter waist, neck, height, and hip measurements. Everything runs locally in your browser — nothing is uploaded.
Calculate lean body mass from total weight and body fat percentage. Understand your muscle mass versus fat mass. Everything runs locally in your browser — nothing is uploaded.
Calculate your waist-to-hip ratio and assess health risk based on your measurements and gender. Everything runs locally in your browser — nothing is uploaded.
Calculate Body Surface Area using the Mosteller formula. Enter height and weight for medical and fitness BSA measurements. Everything runs locally in your browser — nothing is uploaded.
Computes percentage values, percentage increases and decreases, and what-percent-of-what relationships with precise decimal arithmetic. Essential for everyday math — tips, discounts, tax rates, grade scores, and statistical comparisons where quick percentage answers are needed.
Calculate the percentage difference between any two numbers. Useful for comparing data sets, prices, and measurements. Everything runs locally in your browser — nothing is uploaded.
Body Fat Percentage Calculator lets you calculate body fat percentage using the US Navy circumference method. Enter waist, neck, height, and hip measurements. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Calculate body fat percentage using the US Navy circumference method. Enter waist, neck, height, and hip measurements. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Enter numeric values in the input fields — amounts, rates, or percentages.
Yes. After the initial page load, Body Fat Percentage Calculator runs entirely on your device with no internet connection needed. All processing is done locally.
It uses circumference measurements (waist, neck, hips) and height to estimate body fat percentage using formulas developed by the US Navy. It's a reliable non-caliper method.
For men: waist and neck circumference. For women: waist, neck, and hip circumference. All measurements should be taken at the narrowest point.
The Navy method is within 3-4% of DEXA scan results for most body types. It's accurate for general fitness tracking but not for clinical诊断.
Essential fat (2-5% men, 10-13% women), athletes (6-13% men, 14-20% women), fitness (14-17% men, 21-24% women), acceptable (18-24% men, 25-31% women), obese (25%+ men, 32%+ women).
No. All calculations run locally in your browser. No body measurements are transmitted.
Body Fat Estimator
Estimate body fat percentage using BMI-based formula adjusted for age and gender. Shows fitness range and category. Everything runs locally in your browser — nothing is uploaded.
Lean Body Mass Calculator
Calculate lean body mass from total weight and body fat percentage. Understand your muscle mass versus fat mass. Everything runs locally in your browser — nothing is uploaded.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and assess health risk based on your measurements and gender. Everything runs locally in your browser — nothing is uploaded.