Body Fat Calculator

A body fat calculator is a health and fitness tool used to estimate the percentage of your body weight that comes from fat tissue. Unlike simple weight or BMI (Body Mass Index) measurements, body fat percentage gives a more accurate picture of body composition by distinguishing fat from lean mass (muscle, bone, water, organs). This calculator uses various inputs like age, gender, weight, height, and body measurements (such as waist, hip, neck, or wrist circumference) to estimate body fat percentage using formulas developed from population studies.

Advanced Body Fat Calculator

Body Fat Calculator

Understand Your Body Composition

This advanced body fat calculator helps you estimate your body fat percentage using multiple methods, track progress, and understand health implications. Body fat percentage is a key indicator of your overall fitness and health, providing more insight than weight or BMI alone.

Multiple Calculation Methods

US Navy, BMI, and Jackson & Pollock methods for accurate estimations

Progress Tracking

Monitor your body composition changes over time

Personalized Insights

Get recommendations based on your specific body composition

Body Fat Calculator

Imperial
Metric

Body Composition Goal Setting

Set Your Target Body Fat %

5% 15% 25% 35%
Target Body Fat: 15%
lbs
%

Set your target body fat percentage and enter your current metrics to get personalized goal analysis.

Understanding Body Fat

Body Fat Categories

Description Women Men
Essential fat 10-13% 2-5%
Athletes 14-20% 6-13%
Fitness 21-24% 14-17%
Average 25-31% 18-24%
Obese 32+% 25+%

Ideal Body Fat by Age (Jackson & Pollock)

Age Women Men
20 17.7% 8.5%
25 18.4% 10.5%
30 19.3% 12.7%
35 21.5% 13.7%
40 22.2% 15.3%
45 22.9% 16.4%
50 25.2% 18.9%
55 26.3% 20.9%

Health Impact of Body Fat

Essential Body Fat

Essential body fat is necessary for maintaining life and reproductive functions. The amount differs between men (2-5%) and women (10-13%) due to differences in reproductive function and hormone levels.

Storage Fat

Storage fat accumulates when excess energy from food isn't used. It can be categorized as visceral fat (around organs) or subcutaneous fat (under the skin). Visceral fat is more strongly linked to health risks.

Health Risks of Excess Body Fat

  • Increased risk of cardiovascular disease
  • Higher likelihood of type 2 diabetes
  • Elevated blood pressure
  • Reduced quality of life
  • Sleep apnea and breathing problems
  • Increased risk of certain cancers
  • Hormonal imbalances

Benefits of Healthy Body Fat Levels

  • Improved insulin sensitivity
  • Better hormone regulation
  • Enhanced immune function
  • Improved energy levels
  • Reduced inflammation
  • Better athletic performance

Healthy Body Composition

A healthy body composition isn't just about body fat percentage—it's about the balance between fat and lean mass. Even within the "healthy" range, the optimal body fat differs based on age, gender, genetics, and fitness goals.

Why Measure Body Fat Percentage?

Body fat percentage is an important health metric because it tells you how much of your weight is actually fat versus lean mass. Two people with the same weight and height can have very different health profiles if one has a much higher fat percentage. High body fat percentage is associated with increased risk of cardiovascular disease, diabetes, hypertension, and other metabolic disorders. Conversely, too little body fat can also be unhealthy, affecting hormone production and overall energy levels.