The U.S. Navy body fat formula uses simple tape-measure measurements (height, neck, waist, and hip for women) to estimate body fat percentage within about ±3% of a DEXA scan.
Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method — accurate, free, no calipers needed.
AU
Body fat for Australian adults
Healthy body fat ranges differ between men and women. The Australian Institute of Sport and Sports Dietitians Australia use these typical ranges for the general population: men 10–20% essential to healthy, women 18–28%. The U.S. Navy method used here is widely cited in Australian sports nutrition guidance because it correlates well with DEXA scans (the gold standard, available in most Australian capital cities).
Australian sources: Australian Institute of Sport
Frequently asked questions
How accurate is the Navy method? +
About ±3% vs DEXA for most adults — the best at-home estimate without equipment.
What body fat % is healthy? +
Men: 10-20% (athletic 6-13%). Women: 18-28% (athletic 14-20%).
How fast can I lose body fat safely? +
Safely: 0.5-1% of bodyweight per week without losing muscle.
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