Body Fat Percentage Estimator
A quick body-fat estimate from your BMI, age and sex.
Fill in the fields above to see your result.
For general guidance only — not medical advice. Please check with your doctor before starting any new exercise or diet.
About the Body Fat %
This estimates body-fat percentage from your BMI, age and sex using the Deurenberg equation.
It won’t match a body scan, but it’s a handy, private ballpark that you can track over time.
Frequently asked questions
How accurate is it?
It’s an estimate within a few percent for most people — useful for tracking trends, not precise readings.
What’s a healthy body-fat range?
It varies by age and sex; ranges tend to rise gently with age. Ask your doctor for guidance specific to you.
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