Estimate your body fat percentage using the US Navy measurement method. Add neck and hip measurements for a more accurate result.
Last updated: July 2026
⚠️ For informational purposes only. This is an estimate, not a clinical measurement. Body fat is most accurately assessed via DEXA scan or hydrostatic weighing. Consult a doctor or dietitian for clinical assessment.
⚖️ Your Measurements
Enter height between 100 and 250 cm
Enter weight between 20 and 300 kg
Measure at navel level, relaxed (not sucked in)
Enter waist between 40 and 200 cm
Below larynx, slightly downward-sloping
Widest part of hips/buttocks
Total inches (e.g. 5'5" = 65)
Enter height in total inches (36-96)
Enter weight between 44 and 660 lbs
Enter waist measurement
📏 Method: When neck and hip measurements are provided, the US Navy formula is used for higher accuracy. Without them, a BMI-based estimation is used as fallback.
Estimated Body Fat
—%
—
—
—
Total Body Weight
—
kg
Fat Mass
—
kg
Lean Mass
—
kg
To Reach Athletic Range
—
kg fat to lose
📊 Body Fat Categories (by Age & Gender)
CategoryYour Gender Range
💎 Essential Fat—
🏅 Athletic—
✅ Fitness—
👍 Average—
⚠️ Obese—
✅ Recommendations for Your Body Composition
⚠️ Body fat estimates carry a margin of error of ±3–5%. The US Navy formula is validated for population-level use but may be less accurate for individuals with unusual body proportions. Use as a directional guide, not a clinical measurement.