Calculate your body fat percentage using the same circumference-based method used for U.S. Army body composition standards.

Calculate your Body Mass Index (BMI) to see where your weight falls relative to your height, using standard health categories.

Estimate your body fat percentage from simple tape measurements using the U.S. Navy method — no calipers or scans required.

Calculate your body surface area using your height and weight with the Mosteller formula.

Calculate your Fat-Free Mass Index (FFMI) to estimate your muscularity relative to your height, adjusted for a fair comparison across body sizes.

Estimate a healthy weight range based on your height and widely used health guidelines.

Get a general reference point for a healthy body weight, based on your height and a well-known clinical formula.

Estimate your lean body mass using your height, weight, and the Boer formula — separate from fat mass.

Estimate your body fat percentage using the U.S. Navy circumference method — the same formula used for military body composition standards.

Calculate your waist-to-height ratio to assess body fat distribution and better understand your health risk.

Calculate your waist-to-hip ratio to better understand your body fat distribution and potential health risks.