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Body Fat Calculator

Estimate body fat % with the U.S. Navy tape-measure method.

Tool inputs stay in your browser · optional AI search sends your query

How to use it (step by step)

  1. 1Fill in the boxes: “Sex”, “Units”, “Height”, “Neck”, “Waist (at navel)”, “Hips (women only)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

Percentage
A part out of 100. 25% of 200 = 50.

More in Health & Fitness

Medication Checklist LogRecord planned or completed medicine tasks from your own care plan.Meal & Food DiaryKeep a descriptive meal record without invented calorie counts.Weekly Wellness Habit GridTick your own habits across seven dated days and export progress.Walking Cadence MetronomeUse optional audible beats at a self-selected pace.Custom Movement Routine PlayerBuild and run your own timed sequence of movement and rest labels.Health Appointment Prep SheetOrganize questions and notes into a downloadable consultation checklist.