Calculator
Body Fat Calculator
Estimate body fat percentage using US Navy measurements.
Last updated: August 21, 2026
How it works
Body fat percentage is estimated from height and circumference measurements using the US Navy-style tape measurement formula.
Tape-measure body fat estimates depend on consistent measurement points and are not as precise as clinical body-composition testing.
This health calculator is informational and does not diagnose, treat, or replace advice from a qualified medical professional.
References
FAQ
Is this medical advice?
No. This calculator is informational and should be checked with a qualified medical professional.
Why can results vary?
Health estimates depend on measurement accuracy, individual biology, medical history, and assumptions used by the formula.
When should I ask a clinician?
Ask a clinician when results affect diagnosis, treatment, medication, pregnancy, fertility, diet, or exercise decisions.
Is my data uploaded?
The calculator runs in your browser and does not need an extra API request for the estimate.
How to use the Body Fat Calculator
Use this health calculators tool by entering the requested information, reviewing the result, and adjusting your inputs when you need to compare another option. ToolsMagicPro processes the information needed for the selected task and presents a practical result you can copy, download, or use in your next step.
For the most reliable outcome, check that names, numbers, files, URLs, or settings are complete before you run the tool. Results are intended to help with everyday research and workflow decisions. Where a result affects an important financial, legal, health, security, or publishing decision, confirm it with the relevant official source or qualified professional. You can also explore the related tools above to continue the same workflow without starting from scratch.