Estimate body fat percentage from body measurements using standard formula-based methods.
Quick planning, rough comparisons, and checking whether your assumptions are in the right range before you rely on final quotes or advice.
Review the assumptions below, then compare with related calculators if your decision depends on rates, eligibility, or provider-specific rules.
How this calculator works
- This estimate uses a measurement-based Navy formula.
- Waist and neck are used for men; hip is also used for women.
- Tape-measure errors can materially change the result.
Worked example
Small changes in waist or hip measurement can shift the estimate by several percentage points.
Important assumptions
- The result is an estimate, not a DEXA or lab measurement.
- Measurements should be taken consistently for better repeatability.
- Athletic or atypical body proportions can reduce formula accuracy.
FAQ
Are these calculators free?
Yes. lankacalculator tools are free to use and designed to be quick to access without sign-up.
How accurate are the results?
The calculators use clear assumptions and formulas, but results are estimates and should be checked against official documents or provider terms.
Can I use this on mobile?
Yes. The layout is built to work cleanly on phones, tablets, and desktops.
Do you store my inputs?
No account is required for these tools, and calculator inputs are not stored as user profiles in this v1 setup.