Body Metrics Calculators
Body Fat Percentage Calculator
Use tape measurements and the US Navy method to estimate body fat percentage and range.
Page structure
Built for a fast answer first, then a calmer second read.
This calculator page is intentionally layered: quick input and output up top, then a deeper pass through formulas, worked examples, FAQs, and related tools.
Result
Body fat %
16.2% body fat
The US Navy method is convenient and repeatable, though hydration and measuring technique still matter.Results explained
- Measure the same way each time for useful trend data.
- Pair body-fat estimates with scale trends and progress photos.
- Body-fat ranges differ by sex and goal, so use context before making drastic changes.
Best used for
Clearer context before the number
One of the strongest companion pages to BMI and lean body mass.
Coverage
Tags and page signals
body fatbody metricsscreening
Formula & steps
US Navy method
- Uses logarithmic formulas based on height and circumferences.
- Men use waist and neck.
- Women use waist, hip, neck, and height.
Examples
Quick scenario checks
- 175 cm
- 84 waist
- 38 neck
Provides a repeatable trend estimate.
- 165 cm
- 72 waist
- 96 hip
- 34 neck
Good for regular tape-based tracking.
FAQ
Questions worth ranking for
Each calculator page keeps its own compact FAQ block to widen long-tail coverage.
How accurate is the Navy method?
It is convenient and consistent, but not lab-grade.
What body-fat range is healthy?
Ranges differ by sex, age, and context.
How do I measure correctly?
Use the same landmarks, tape tension, and time of day.