Home About Contact
Categories
Text Tools 51 Calculators 42 Converters 31 Developer Tools 64 SEO Tools 29 Image Tools 54 Security Tools 13 Social Media 28 Document Tools 54 Utility Tools 67 Health & Fitness 52 Finance Tools 78 Education & Study 84 Audio & Video 29 Printables & Templates 50 Games & Puzzles 30

Body Fat Calculator

Estimate body fat percentage with a measuring tape using the U.S. Navy method.

Health & Fitness Free Private

Measurements (cm)

Estimates only – not medical advice. Talk to a doctor or dietitian for personal guidance.

Enter height, neck, waist (and hip for women) measurements to estimate body fat and lean mass.

What is the Body Fat Calculator?

This body fat calculator uses the U.S. Navy tape-measure method, which only needs a few body measurements. It estimates your body fat percentage, fat mass and lean body mass.

How to use the Body Fat Calculator

  1. Measure your neck, waist at the belly button and (for women) hips with a soft tape.
  2. Enter your height and weight.
  3. Read your body fat percentage and category.

Frequently asked questions

How accurate is the Navy method?

It is usually within 3–4% of lab tests when measurements are taken carefully.

What is a healthy body fat percentage?

Roughly 14–24% for men and 21–31% for women is considered fit to average.

This body fat calculator is 100% free, needs no signup and runs in your browser, so your data stays private.

Last updated: · By NodifyTech

More Health & Fitness

Pedometer (Step Counter Online)

Health & Fitness

Count your steps with your phone’s motion sensor – see steps, distance, calories and pace. Works in the browser, no app needed.

Live
Use

Period Calculator

Health & Fitness

Predict your next periods for the next 6 months, plus estimated ovulation dates, from your cycle length.

Live
Use

Medicine Schedule Maker (Pill Chart Printable)

Health & Fitness

Make a clear daily medicine schedule / pill chart for yourself, a parent or child – medicine names, doses, times and with-food notes. Tick doses on your phone and print a weekly chart.

Live
Use

Sleep Debt Calculator (Weekly Sleep Tracker)

Health & Fitness

Log how many hours you slept each night this week and see your sleep debt compared with your ideal – with a recovery plan and tips. Data stays on your device.

Live
Use

Popular Tools

Color Converter (HEX, RGB, HSL)

Developer Tools

Pick a color and convert between HEX, RGB and HSL codes, with tints and shades.

Live
Use

Attendance Sheet Generator (Monthly Register)

Printables & Templates

Create a monthly attendance register for a class, tuition, office or madrasa – tap cells to mark Present, Absent or Leave with automatic totals, then print it.

Live
Use

Lined Paper Generator (Printable Ruled Paper)

Printables & Templates

Make printable lined paper in A4 or Letter – choose line spacing (wide, college, narrow), margin line, header and colors, then print or save as PDF.

Live
Use

Instagram Highlight Cover Maker

Social Media

Design matching Instagram Story highlight covers – choose colours or gradients, emoji icons and labels – then download 1080×1080 PNGs ready to upload. Perfect for shops and creators.

Live
Use