Omni Body Fat Calculator

What is the Omni Body Fat Calculator?

The Omni Body Fat Calculator uses the US Navy method to estimate your body fat percentage based on body measurements. This method is widely recognized as one of the most accurate ways to estimate body composition without specialized equipment.

This calculator provides the same accurate results as Omni Calculator's body fat tool, using the proven US Navy formula that takes into account your age, gender, height, weight, and key body measurements (neck, waist, and hip circumference).

How to Use the Omni Body Fat Calculator

1. Select your unit system (metric or imperial)
2. Enter your gender, age, weight, and height
3. Measure and enter your neck circumference (at the narrowest point)
4. Measure and enter your waist circumference (at navel level)
5. If female, measure and enter your hip circumference (at widest point)
6. Click "Calculate Body Fat" to see your body composition results
7. Review your body fat percentage, lean body mass, and fat mass

Body Fat Percentage Categories

How to Measure Accurately

For accurate results, follow these measurement guidelines:

• Neck: Measure at the narrowest point, just below the larynx
• Waist: Measure at navel level, or at the narrowest point if different
• Hip (women only): Measure at the widest point around the hips/buttocks
• Measure in the morning before eating, with relaxed muscles
• Use a flexible measuring tape, keeping it parallel to the floor
• Don't pull the tape too tight - it should be snug but not compressing skin

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