Body Fat Percentage Calculator

Overview

Calculate body fat percentage using Navy method, see health ranges and lean vs fat mass breakdown

Key Facts

Field	Value
Calculator ID	`body-fat`
Category	Health
Vertical	Health & Fitness
App route	`/verticals/health/body-fat`
API endpoint	`/api/public/calculate?id=body-fat`

Inputs

Input ID	Label	Type	Required	Default	Constraints
-	-	-	-	-	-

How to Use

Enter Basic Info — Input gender, age, weight, and height
Measure Hips (Females) — Females also measure hip circumference at widest point

Result Surfaces

Output	Display Type	Format
Computed results	`result-card`	-

FAQ

How accurate is the Navy body fat calculator?

The Navy method is accurate within 3-4% when measured correctly. It's more accurate than BMI for athletes but less precise than DEXA scan, Bod Pod, or hydrostatic weighing.

What is a healthy body fat percentage?

For men: 8-20% is healthy (athletes 6-13%, fitness 14-17%). For women: 14-25% is healthy (athletes 14-20%, fitness 21-24%). Essential minimums are 2-5% (men) and 10-13% (women).

How often should I measure body fat?

Measure every 2-4 weeks during weight loss or muscle gain. Daily fluctuations from water/food aren't meaningful. Take measurements in the morning before eating for consistency.