Health & Wellbeing

Body Fat Percentage (estimate)

Estimated body fat from BMI, age and sex.

Education and reference only. Not a substitute for clinical judgement, local policy or product labelling. Always verify before clinical use. Values are calculated in your browser and never stored.

When to use

Use for a rough estimate of body fat percentage when you do not have body-composition scales.

Why use

The Deurenberg equation estimates body fat from BMI, age and sex — useful as a guide, though less accurate than direct measurement.

Advice

This is an estimate only and can be several percent off for very muscular or very lean people. It is not a substitute for proper body-composition measurement.

References

  1. Deurenberg P, et al. Body mass index as a measure of body fatness. Br J Nutr. 1991.

Related calculators

Body Mass Index (BMI)Weight-for-height screening measure.Waist-to-Height RatioA simple check of fat carried around the middle.

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