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CALCULATION DESK
Estimate body fat percentage from sex, height, neck, and waist (and hip for female) circumference using the US Navy method.
WHAT THIS DOES
Runs entirely in your browser.
/tools/body-fat-calculatorbody-fat-calcv4.0.0LOCAL · LOCAL RUNIMPLEMENTED — This workbench is functional in the current release.Presets for this workbench
No preset yet. A preset stores the values in this form — never the result — and only for workbenches that run entirely in your browser.
Collections
Saved on this device only. Turn on sync to carry them to another device.
METHOD / LOCAL RUN
BF% (male) = 86.010 × log10(waist − neck) − 70.041 × log10(height) + 36.76. BF% (female) = 163.205 × log10(waist + hip − neck) − 97.684 × log10(height) − 78.387.
Boundary: Estimate, not a clinical measurement (DXA, hydrostatic, etc.). Accuracy depends on consistent measurement technique.
The calculation or transformation runs in your browser using the values entered above. No input is sent to UtilityForge for this tool.
EXAMPLES / LOCAL RUN FIXTURES
FAQ
No. The tool provides a calculation. Review material decisions with an appropriate professional source.
No. The body fat calculator runs locally.
The workbench states the exact method behind every result — the formula or procedure this page runs — so you can verify the computation instead of trusting a black box.
No. This workbench runs in the page: Sex, Height (cm), Neck (cm), Waist (cm), Hip (cm, female only) are read by the code your browser already downloaded, and UtilityForge receives neither the values nor the result.
Estimate, not a clinical measurement (DXA, hydrostatic, etc.). Accuracy depends on consistent measurement technique.
RELATED TOOLS
LOCAL — Runs entirely in your browser.
BEFORE YOU RELY ON THIS
Bodies and medications vary more than any formula assumes. This is an estimate for planning, not a diagnosis, dosage, or dietary instruction.
Method last reviewed against: Local US Navy formula; not a clinical measurement.
How this was verifiedCOMMON USE CASES / SOURCE NOTE
Last reviewed:
Source information: Local US Navy formula; not a clinical measurement.