Minimum Stress · Body Composition
Estimate your
body fat percentage
BMI cannot distinguish muscle from fat. This calculator uses circumference measurements to estimate body fat percentage, lean mass, and fat mass — giving you a clearer body composition snapshot to track over time.
Sex
Height
cm
Weight
kg
Waist
At navel, relaxed exhale
cm
Neck
Below larynx, sloping down
cm
Hips (women only)
Widest point of buttocks
cm
Age
Saved for context; the circumference formula does not use age
yrs
📏 How to measure accurately
Waist: Measure at navel level on a relaxed exhale — do not suck in
Neck: Just below the larynx, tape sloping slightly downward at the front
Hips: For women, measure the widest point of hips and buttocks, feet together
Accuracy tip: Measure in the morning before eating, same time each measurement
Please fill in all required fields with realistic measurements.
--%
Body Fat
Where you sit in the body composition range
Body composition breakdown
Lean Mass
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Fat Mass
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