Body Fat Estimator

1. Enter Sex, Height, Neck, Waist, Hip.
2. Check the estimate in the result area.
3. Share a reproducible URL if needed.

• Read Body-fat estimate as quick decision-making estimates.
• Do not treat the result as a fixed answer; adjust assumptions to see the range when needed.

• Useful when you want to get a rough body-composition estimate; adjust inputs to compare scenarios.
• Useful when you want to track changes from circumference measurements; adjust inputs to compare scenarios.
• Use results as training guides and adjust for condition, heat, surface, and fatigue.
• If the result feels too demanding, reduce distance, intensity, or duration and recalculate.

Uses a circumference-based estimate similar to the U.S. Navy method. Results vary strongly with measurement conditions.

• Adjust for your condition and environment.
• This is not medical or coaching advice.
• Stop exercising if you feel pain or discomfort.