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Body Fat Calculator

Get your body fat percentage in under 5 seconds using the scientifically validated US Navy method.

Units:
Units:
Unit:

Unit Conversion Guide

Weight Units
• 1 kg = 2.20462 lbs
• 1 kg = 0.15747 st
• 1 st = 6.35029 kg
• 1 lb = 0.453592 kg
Height Units
• 1 cm = 0.393701 in
• 1 ft = 30.48 cm
• 1 in = 2.54 cm
• 1 m = 100 cm
Circumference Units
• 1 cm = 0.393701 in
• 1 in = 2.54 cm
• 1 mm = 0.1 cm
• 1 cm = 10 mm

Body Fat Categories

Essential Fat2-5%
Minimum necessary for basic physiological functions
Athletes6-13%
Typical for athletic individuals
Fitness14-17%
Good fitness level
Average18-24%
Average for general population
Obese25%+
Increased health risks

Health & Fitness Tips

💪 Reducing Body Fat
• Create a calorie deficit through diet and exercise
• Include both cardio and strength training
• Focus on whole foods and protein intake
• Get adequate sleep and manage stress
📊 Measurement Accuracy
• Measure circumference in the morning on empty stomach
• Use a flexible tape measure at skin level
• Don't pull the tape too tight or leave it too loose
• For consistent results, measure at the same time daily
⚠️ Health Considerations
• Very low body fat can be dangerous to health
• High body fat increases chronic disease risk
• Consult healthcare professionals for personalized advice
• Focus on overall health, not just body fat percentage

This free tool helps you estimate your body composition using the scientifically validated US Navy circumference method. It calculates your body fat percentage based on key measurements, providing insights into your body's composition beyond simple weight tracking.

Unlike basic weight measurements, this calculator gives you detailed breakdowns of fat mass, lean mass, and body mass index. Understanding your body composition is crucial for setting realistic fitness goals, tracking progress effectively, and making informed decisions about your health and nutrition strategies.