PounceFitIdeal body fat percentage: chart by sex and age
By PounceFit Team · Updated on
Technical content for health and fitness professionals. It reproduces formulas and protocols published in the scientific literature, with the sources at the end of the page. It is not a recommendation and does not replace the judgment of the professional who runs the assessment.
Ideal body fat percentage depends on sex and age, so there is no single number. In the Gallagher et al. (2000) chart, the healthy range is 21% to 33% for women aged 20 to 39 and 8% to 20% for men of the same age, rising a little in the older age groups. These are reference ranges for adults, derived from BMI, not a diagnosis.
The chart by sex and age
Values in percent body fat, for white and African American adults (Gallagher et al., 2000, table 4):
| Sex and age | Below range | Healthy range | Overweight | Obese |
|---|---|---|---|---|
| Women, 20 to 39 | under 21% | 21% to 33% | 33% to 39% | 39% or more |
| Women, 40 to 59 | under 23% | 23% to 34% | 34% to 40% | 40% or more |
| Women, 60 to 79 | under 24% | 24% to 36% | 36% to 42% | 42% or more |
| Men, 20 to 39 | under 8% | 8% to 20% | 20% to 25% | 25% or more |
| Men, 40 to 59 | under 11% | 11% to 22% | 22% to 28% | 28% or more |
| Men, 60 to 79 | under 13% | 13% to 25% | 25% to 30% | 30% or more |
For Asian adults, the same study gives a separate chart, with higher cutoffs for the same BMI (Gallagher et al., 2000, table 5):
| Sex and age | Below range | Healthy range | Overweight | Obese |
|---|---|---|---|---|
| Women, 20 to 39 | under 25% | 25% to 35% | 35% to 40% | 40% or more |
| Women, 40 to 59 | under 25% | 25% to 35% | 35% to 41% | 41% or more |
| Women, 60 to 79 | under 25% | 25% to 36% | 36% to 41% | 41% or more |
| Men, 20 to 39 | under 13% | 13% to 23% | 23% to 28% | 28% or more |
| Men, 40 to 59 | under 13% | 13% to 24% | 24% to 29% | 29% or more |
| Men, 60 to 79 | under 14% | 14% to 24% | 24% to 29% | 29% or more |
Where the numbers come from
Gallagher et al. (2000) measured body fat in 1,626 adults with a BMI up to 35 at three centers: Cambridge (United Kingdom), Columbia (United States) and Jikei (Japan). Body fat was measured with reference methods: the four-compartment model at two laboratories and dual-energy X-ray absorptiometry (DXA) at all three.
From these data, the authors built equations that predict body fat percentage from BMI, age, sex and ethnic group. They then applied the equations at the BMI cutoffs used by the WHO and the US National Institutes of Health: 18.5 (underweight), 25 (overweight) and 30 (obesity). The predicted body fat at each cutoff became a limit in the chart. The authors call these ranges provisional, a starting point toward international ranges.
Limits of the chart
- Built from BMI. The ranges translate BMI cutoffs into body fat. They were not derived from health outcomes measured directly against body fat percentage (Gallagher et al., 2000).
- Lower range. Few people in the sample had a BMI below 18.5, and the authors warn that the lower limits have wide confidence intervals and should be applied with caution (Gallagher et al., 2000).
- Population. Ethnic group changed the results, to the point that Asian adults got their own chart (Gallagher et al., 2000). Other populations were not studied.
- Age. The chart starts at 20 and ends at 79.
- Field method error. The chart uses laboratory measurements. In day-to-day assessment, body fat comes from a field method with its own error: skinfold equations err by about 3 to 4 percentage points against the reference method (Heyward and Wagner, 2004), and the bioimpedance devices tested by Siedler et al. (2023) had standard errors of 3.1 to 7.5 points. A value close to a cutoff may fall on either side of it.
How body fat fits into the assessment
Body fat percentage comes from an estimation method, such as skinfolds with a caliper or bioimpedance. For the skinfold calculation, see how to calculate body fat with calipers or use the Jackson & Pollock 7-site calculator. To compare the two approaches, see bioimpedance vs skinfolds.
In PounceFit, the body assessment software, each assessment result comes with a body fat classification by sex and age group, on a seven-level scale that is not the one in this chart. The app also stores a body fat target for each client, set by the professional.
Frequently asked questions
What is the ideal body fat percentage for women?
In the Gallagher et al. (2000) chart, the healthy range for women is 21% to 33% at ages 20 to 39, 23% to 34% at 40 to 59 and 24% to 36% at 60 to 79. These values apply to the sample of white and African American women; for Asian women the cutoffs are somewhat higher.
What is the ideal body fat percentage for men?
In the same chart, the healthy range for men is 8% to 20% at ages 20 to 39, 11% to 22% at 40 to 59 and 13% to 25% at 60 to 79 (Gallagher et al., 2000).
Why does the range go up with age?
Because in the study, at the same BMI, older people had a higher body fat percentage (Gallagher et al., 2000). Since the chart was built from BMI cutoffs, the matching body fat range rises with age.
Does the chart apply to adolescents and athletes?
It covers adults aged 20 to 79 with a BMI up to 35, from a general-population sample (Gallagher et al., 2000). It does not apply under age 20, and for groups very different from the sample the classification should be read with care.
Sources
- Gallagher D, Heymsfield SB, Heo M, Jebb SA, Murgatroyd PR, Sakamoto Y. Healthy percentage body fat ranges: an approach for developing guidelines based on body mass index. American Journal of Clinical Nutrition. 2000;72(3):694-701. doi:10.1093/ajcn/72.3.694
- Heyward VH, Wagner DR. Applied body composition assessment. 2nd ed. Champaign: Human Kinetics; 2004.
- Siedler MR, Rodriguez C, Stratton MT, Harty PS, Keith DS, Green JJ, et al. Assessing the reliability and cross-sectional and longitudinal validity of fifteen bioelectrical impedance analysis devices. British Journal of Nutrition. 2023;130(5):827-840. doi:10.1017/S0007114522003749