Fitness Tool
Body Fat Calculator
Estimate your body fat percentage, fat mass and lean mass using simple body measurements. It is not perfect, but it is more useful than crying at the bathroom scale.
Estimated Result
Your Body Fat Estimate
Estimated Body Fat
20%
Estimated category will appear here.
Body Composition
Fat Mass
16kg
Lean Mass
64kg
Weight
80kg
Method
Estimate
Progress Note
Use this as a progress estimate.
Body fat calculators are rough estimates. Use the same measurement method each time and track trends over weeks, not daily panic changes.
Body Fat Estimate
Track body composition, not just body weight.
Scale weight alone does not show the full picture. Body fat estimates, waist measurements, progress photos, training performance and how clothes fit can all help you understand progress. This calculator gives an estimate, not a medical diagnosis or lab-grade result.