CalculioHubCalculioHub

Health, Fitness & Wellness

Body Fat Percentage Calculator (Navy Tape Method)

U.S. Navy circumference formula from neck, waist, hips, and height.

Estimate body fat % with neck, waist, hip, and height tape measurements. Estimates only—not a diagnosis or prescription.

Remember · Share

Inputs save on this device only. Share a link to reopen your exact numbers.

Inputs

01
4884
1025
2060
060

Smart analysis

Recommendations

Tailored to your live inputs and result—guidance only, not professional advice.

  • Undefined

    Result is undefined or unbounded

    Adjust inputs that drive division by zero, impossible goals, or payments that never cover interest.

Scenario studio

Compare A vs B

Capture two sets of inputs on this device, then see which outcome wins. Share either scenario with a link.

Scenario A

Adjust inputs, then capture this slot.

Scenario B

Adjust inputs, then capture this slot.

Come back later

Health check-in history

Private on this device only. Not a medical diagnosis or treatment advice — talk to a qualified clinician for health decisions.

No snapshots yet — save one to track change over time.

Plain-English guide

Terms & how it works

Confused by a field? Read the short definitions here while you use the tool.

  • Sex (0=F, 1=M)

    The “Sex (0=F, 1=M)” value used in this tool’s formula. Adjust it to see results update live.

  • Height (in)

    The “Height (in)” value used in this tool’s formula. Adjust it to see results update live.

  • Neck (in)

    The “Neck (in)” value used in this tool’s formula. Adjust it to see results update live.

  • Waist (in)

    The “Waist (in)” value used in this tool’s formula. Adjust it to see results update live.

  • Hip (in, women)

    The “Hip (in, women)” value used in this tool’s formula. Adjust it to see results update live.

How this calculator works

Estimate body fat % with neck, waist, hip, and height tape measurements. Estimates only—not a diagnosis or prescription. U.S. Navy circumference formula from neck, waist, hips, and height. Example: 5'10" male, 15 in neck, 34 in waist → ~18% body fat (estimate).

U.S. Navy circumference formula from neck, waist, hips, and height.

Example: 5'10" male, 15 in neck, 34 in waist → ~18% body fat (estimate).

When to use this Body Fat Percentage

Common use cases

  • Estimate body fat % with neck, waist, hip, and height tape measurements.
  • Sanity-check with this case: 5'10" male, 15 in neck, 34 in waist → ~18% body fat (estimate).
  • The relationship is: U.S. Navy circumference formula from neck, waist, hips, and height.

Localized examples

  • Health, Fitness & Wellness: the example on this page uses the same formula as the widget.

What you get

  • Fields: Sex (0=F, 1=M), Height (in), Neck (in), Waist (in)
  • U.S. Navy circumference formula from neck, waist, hips, and height.
  • Example on the page: 5'10" male, 15 in neck, 34 in waist → ~18% body fat (estimate).

How to Calculate Body Fat Percentage Step-by-Step

  1. 1Enter Sex (0=F, 1=M), Height (in), Neck (in), then the remaining fields. Use the values you have, not a catalog average, unless that is all you know.
  2. 2U.S. Navy circumference formula from neck, waist, hips, and height.
  3. 3Worked case: 5'10" male, 15 in neck, 34 in waist → ~18% body fat (estimate).
  4. 4If this number would change a drug, a diet, or a return-to-play call, take it to a clinician. The page never examined you.

Governing formula

U.S. Navy circumference formula from neck, waist, hips, and height.

5'10" male, 15 in neck, 34 in waist → ~18% body fat (estimate).

Example: set Sex (0=F, 1=M) = 1, Height (in) = 70, Neck (in) = 15, then read the result.

Variable definitions

  • sex

    Sex (0=F, 1=M)

    The “Sex (0=F, 1=M)” field. Default 1; typical range 0–1.

  • heightIn

    Height (in)

    The “Height (in)” field. Default 70; typical range 48–84.

  • neckIn

    Neck (in)

    The “Neck (in)” field. Default 15; typical range 10–25.

  • waistIn

    Waist (in)

    The “Waist (in)” field. Default 34; typical range 20–60.

  • hipIn

    Hip (in, women)

    The “Hip (in, women)” field. Default 0; typical range 0–60.

  • The formula (U.S. Navy circumference formula from neck, waist, hips, and height.) does not see labs, medications, sleep, or injury history. A clinician does.
  • Nothing here is uploaded for the calculation itself.

Frequently Asked Questions

U.S. Navy circumference formula from neck, waist, hips, and height.

Related calculators

Health, Fitness & Wellness

Get a note when we add a planner

Occasional email when something new is worth opening. We never share your address. Unsubscribe anytime.

Discover & search

Explore More Tools

Related tools in Health, Fitness & Wellness — strengthening topical internal links.

Same category · 3 tools

Browse all →

BMI Calculator

Health, Fitness & Wellness

Calculate adult BMI from height and weight with WHO category bands.

Children's BMI Calculator

Health, Fitness & Wellness

Estimate a child's BMI percentile from age, sex, height, and weight.

Army Body Fat Calculator

Health, Fitness & Wellness

Check body fat against approximate Army tape-test screening limits.

Community

Reviews & Ratings

See what others think about this tool, then leave your own rating to help improve CalculioHub.

4.8

out of 5.0

4 reviews

Leave a review

Your rating

Aisha K.

Mar 12, 2026

Clean layout and the results update instantly. Exactly what I needed for a quick planning check.

Daniel R.

Feb 28, 2026

Very usable on mobile. Would love a save/export option later, but the math feels solid.

Priya S.

Feb 3, 2026

The FAQ section answered my questions before I even had to search. Smooth dark mode too.

Marcus L.

Jan 19, 2026

Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.

Improve this tool

Suggestion Box

Share an idea, report a bug, or send general feedback for Body Fat Percentage Calculator. Your input helps shape what we build next.