Overview
Body Health Calculator is an easy and free online tool that runs in your browser.
Basic Information
Optional Measurements
Add waist, hip, or neck data to unlock advanced body fat metrics.
Understanding These Metrics
BMI
Most common health screening tool. Uses weight and height to categorize underweight (<18.5), normal (18.5-24.9), overweight (25-29.9), or obese (≥30).
BMR/TDEE
BMR is calories your body burns at rest. TDEE includes activity level. Used for weight management and diet planning.
Body Fat %
More accurate than BMI for fitness. Essential fat: 2-5% (men), 10-13% (women). Athletes: 6-13% (men), 14-20% (women).
WHR
Measures body fat distribution. Higher values indicate more abdominal fat, linked to health risks. Target: <0.9 (men), <0.8 (women).
Body Health Calculator
Calculate and understand BMI, BMR, body fat percentage, waist-to-hip ratio, and other body composition metrics with detailed explanations —.
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How people use it
This browser-based tool is designed to be fast, easy to use, and private by default. Open the tool, adjust the settings, and get results instantly without creating an account or sending files to a server.
Everything runs locally in the browser whenever possible, which reduces friction for users and makes the page more useful as a direct-answer landing page from search.
Common topics
The following topics are closely related to this tool and help explain what it is for:
- BMI
- BMR
- body fat
- waist hip ratio
- health calculator
- body composition
- fitness metrics
- TDEE
Quick answers
What does this Body Health Calculator measure?
It calculates BMI, BMR and TDEE, plus optional body composition metrics like body fat %, WHR (waist-to-hip) and WHtR (waist-to-height).
What measurements are required vs optional?
Height, weight, age and gender are required. Waist/neck (and hip for women) are optional and unlock body fat %, WHR and WHtR.
How is body fat percentage estimated?
It uses the US Navy tape method based on height and circumferences (waist/neck, and hip for women).