How to use this tool
Enter your values, run the tool, then review the result cards. Most tools update automatically when inputs change, so you can test several scenarios quickly.
Example inputs
- Sex: Male
- Height cm: 175
- Neck cm: 38
- Waist cm: 84
- Hip cm: 96
Results this page provides
- Body fat estimate
How it works
The estimate uses Navy tape-measure formulas with height, neck, waist, and hip where applicable.
Best use cases
Track rough changes when using consistent measurement technique.
Limitations
Tape formulas are estimates and can be inaccurate for many body types.