Body Fat Calculator
Estimate your body fat percentage with the U.S. Navy tape method.
Body fat
—
Category
—
Fat mass
—
Lean body mass
—
Method
—
Results update as you type.
About this calculator
This calculator estimates body fat percentage using the U.S. Navy circumference method, which needs only a tape measure. It is a quick estimate — not as precise as a DEXA scan — but useful for tracking changes over time.
Frequently asked questions
How accurate is the Navy method?
It is typically within about 3-4% of a DEXA scan for most people. Accuracy depends on measuring at the right spots with the tape snug but not compressing the skin.
What is a healthy body fat percentage?
General fitness ranges are roughly 14-24% for men and 21-31% for women, but healthy ranges vary with age and athletic goals.
Results are estimates for general guidance only, not financial, medical or tax advice.