ShulahBody fat calculator
Body fat percentage is the share of your weight that is fat. With a tape measure, this calculator uses the US Navy method; without one, it estimates from your BMI, age and sex.
Estimates for healthy adults (Mifflin-St Jeor · Katch-McArdle · Deurenberg · US Navy · Epley). Not medical advice.
How it is calculated
The US Navy method uses your height and your neck and waist, plus your hips for women. It is one of the most accurate methods you can do with a tape. The estimate from BMI (the Deurenberg formula) is rougher, and reads high for people who carry a lot of muscle.
How to read it
Typical ranges for men: 6 to 13% athletic, 14 to 17% fit, 18 to 24% average. For women: 14 to 20% athletic, 21 to 24% fit, 25 to 31% average. Measure relaxed, at the same time of day, to compare over weeks.