Relative Fat Mass Calculator
Estimate Relative Fat Mass from height, waist circumference and sex using the published RFM equation.
Enter or adjust the values above, then calculate.
Relative Fat Mass: rFM from Waist & Height
Estimate Relative Fat Mass from height, waist circumference and sex using the published RFM equation.
Inputs this tool uses
- Sex used by the formula
- Height
- Waist circumference
What you get
Relative Fat Mass estimate.
How to use the Relative Fat Mass Calculator
- Enter sex used by the formula, height, waist circumference.
- Select any method, activity level or option shown on this page, then choose Calculate.
- Read the main result together with the supporting values, method, assumptions and limitations below before using the estimate.
How this calculation works
Relative Fat Mass uses height, waist circumference and the sex term in the published equation.
Example calculation
The sample values loaded into the calculator produce 33.5%. This example exists to show how the output is structured; replace the sample values with your own inputs for your calculation.
Assumptions and limitations
- Anthropometric formulas are estimates and can differ from direct clinical measurements.
- Results are educational screening/reference values and do not diagnose health conditions.
Sources and review status
Source set last verified 2026-09-25. No clinician review is claimed unless a real named reviewer is displayed.
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