Ideal Body Fat Calculator
See reference body fat percentage ranges (essential, athletes, fitness, acceptable) by sex, and classify your own body fat percentage against them.
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- Works on all devices
Your result
Acceptable
Your category
AI explanation
Formula
Reference ranges from the American Council on Exercise (ACE) body fat categories, by sexWorked example
Male, 15% body fat
| Field | Value |
|---|---|
| Sex | male |
| Your current body fat % | 15 |
| Your category | Fitness |
| Acceptable range (low) | 18 |
| Acceptable range (high) | 24 |
Assumptions
- Uses the American Council on Exercise (ACE) sex-specific body fat percentage categories, one of the most widely cited reference tables (not age-adjusted).
- Informational only — not a diagnosis. Individual health risk from body fat percentage also depends on distribution and other factors.
Frequently asked questions
What is a healthy body fat percentage?
Per ACE guidelines, an "acceptable" range is roughly 18-24% for men and 25-31% for women, with lower ranges for "fitness" and "athlete" categories.
Why do men and women have different healthy ranges?
Women naturally carry more essential fat than men (needed for hormonal and reproductive function), so all category thresholds are shifted higher for women.
Is a lower body fat percentage always better?
No — going below the "essential fat" range can impair hormonal, immune, and reproductive function. There's a healthy floor, not just a ceiling.
Related calculators
Sources
- What are the Guidelines for Percentage of Body Fat Loss? — American Council on Exercise. Effective 02-12-2009, reviewed 13-09-2026.
This calculator provides a general estimate only and does not constitute personalized medical advice. Consult a qualified healthcare professional for guidance specific to you.
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