BMI 21.0
Is a BMI of 21.0 normal?
A BMI of 21.0 is classified here as Ideal. BMI is a screening measure based on height and weight; it does not diagnose health on its own. A clinician can help interpret it alongside age, body composition, medical history, and other factors.
How does a BMI of 21.0 compare by gender?
These percentages are calculated from anonymous BMI results collected by this calculator. “Similar” means the same one-decimal BMI value.
| Group | Lower BMI | Similar BMI | Higher BMI |
|---|---|---|---|
| Men | 22% | 7% | 72% |
| Women | 49% | 8% | 43% |
BMI 21.0 by age group
The table below uses the same anonymous data, segmented by reported age and gender. “Similar” means the same one-decimal BMI value.
| Age group | Group | Lower BMI | Similar BMI | Higher BMI |
|---|---|---|---|---|
| Under 18 | Men | 46% | 7% | 47% |
| Under 18 | Women | 65% | 6% | 29% |
| 18–30 | Men | 21% | 8% | 71% |
| 18–30 | Women | 53% | 9% | 38% |
| 31–40 | Men | 9% | 5% | 86% |
| 31–40 | Women | 33% | 10% | 57% |
| 41–50 | Men | 8% | 5% | 88% |
| 41–50 | Women | 22% | 9% | 68% |
| 51–65 | Men | 10% | 5% | 85% |
| 51–65 | Women | 18% | 6% | 75% |
| 66+ | Men | 19% | 8% | 73% |
| 66+ | Women | 25% | 6% | 69% |
Category ranges: 15 or less Starvation; 15.1–17.4 Anorexic; 17.5–18.4 Underweight; 18.5–24.9 Ideal; 25–29.9 Overweight; 30–39.9 Obesity; 40 or greater Morbidly Obese.