Relative Fat Mass (RFM) Calculator
Health & FitnessEstimate your body fat percentage using Relative Fat Mass, a formula based on height and waist circumference shown to be more accurate than BMI.
Relative Fat Mass
Your estimated body fat percentage using the Relative Fat Mass formula.
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Average
Your body fat category based on standard classification ranges.
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Odeh Ahwal0people find this calculator helpful
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Saved
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Frequently Asked Questions
What is Relative Fat Mass (RFM)?
RFM is a formula that estimates body fat percentage using just your height and waist circumference. Research has shown it can be more accurate than BMI at identifying excess body fat, since it accounts for fat distribution rather than just overall weight.
How is RFM different from BMI?
BMI only uses height and weight, so it cannot distinguish between muscle and fat. RFM instead uses waist circumference relative to height, which more directly reflects body fat.
What is a healthy RFM?
Healthy ranges vary by sex. For men, an RFM in the athletic-to-average range (roughly 6-24%) is typical. For women, the equivalent range is roughly 12-31%. Values well above these are classified as obese.
Do I need any special equipment to measure RFM?
No, you only need a tape measure for your waist circumference and your height. No scale, calipers, or body scan is required.
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