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Body Fat Calculator
Calculate body fat percentage using US Navy method with body measurements
Personal Information
Different formulas are used for male and female calculations
Age affects ideal body fat percentage ranges
Profile: 👨 30 years old male
US Navy body fat calculation method with age-adjusted ranges
Basic Measurements
Current body weight for body composition calculation
Height in centimeters for accurate body fat calculation
Basic: 70 kg, 170 cm
BMI: 24.2 | Height: 1.7 meters
Body Measurements
Measure around the neck, just below the Adam's apple
Measure at the narrowest point, usually at navel level
Measurements: Neck 38cm, Waist 85cm
US Navy method uses neck and waist measurements
Body Fat Percentage
Current Body Fat
17.8%
Fitness
Health Status
Very good
Method
US Navy
Body Composition
Fat vs Lean Mass
12.5 kg fat | 57.5 kg lean
Total body weight: 70 kg
Fat Mass
12.5 kg
Lean Mass
57.5 kg
Ideal Range
Healthy Body Fat Range
8% - 19%
Age-adjusted for 30 year old male
Fat to Lose
-
Target %
19%
Body Composition
Body Fat: 17.8% | Category: Fitness
Quick Summary
Body Fat %:17.8%
Category:Fitness
Fat Mass:12.5 kg
Lean Mass:57.5 kg
Ideal Range:8-19%
Health Status:Very good
Detailed Analysis & Recommendations
How US Navy Body Fat Calculation Works
US Navy Formula (male)
Male: 495 ÷ (1.0324 - 0.19077 × log₁₀(waist - neck) + 0.15456 × log₁₀(height)) - 450
Your result: 17.8% body fat
Measurement Requirements
Men need neck and waist measurements. Neck: 38cm, Waist: 85cm
Height: 170cm | Weight: 70kg for body composition calculation
Body Composition Breakdown
Total weight (70kg) = Fat mass (12.5kg) + Lean mass (57.5kg)
Body fat percentage: 17.8% | Category: Fitness
Age-Adjusted Ranges
Ideal body fat ranges adjust with age. For 30-year-old male: 8-19%
You are within or below the ideal body fat range
Body Fat Management Tips
Fat Loss Strategies:
- • Calorie Deficit: 300-500 calories below maintenance
- • Strength Training: Preserve lean muscle mass
- • Cardio Exercise: 150+ minutes moderate intensity weekly
- • Protein Intake: 1.6-2.2g per kg body weight
Body Composition Tips:
- • Measurement Consistency: Same time of day, conditions
- • Progress Tracking: Monthly measurements, photos
- • Hydration: Affects measurement accuracy
- • Professional Assessment: DEXA scan for accuracy
Your Body Composition Analysis:
Body Fat: 17.8% (Fitness)
Fat Mass: 12.5 kg
Lean Mass: 57.5 kg
Ideal Range: 8-19%
Status: Very good
Action: Maintain current level
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Categories
Body Composition3
Nutrition4
Women's Health2
Hydration1
Take Control of Your Health
Monitor your fitness journey and make informed health decisions
Quick Health Tips
•Aim for 8-10 glasses of water daily
•Include protein in every meal
•Track your BMI regularly
•Exercise 150 minutes per week