A BMI chart turns your calculated BMI number into a meaningful health category. But BMI charts are not one-size-fits-all — the healthy range varies by age, gender, and ethnicity. This guide walks through every BMI chart you need to understand your results.
BMI Chart for Adults (18+)
The standard adult BMI chart, established by the World Health Organization, applies to all adults aged 18 and above regardless of age or sex:
| BMI | Category | Associated Risks |
|---|---|---|
| Below 16.0 | Severely Underweight | High risk of malnutrition, organ failure |
| 16.0 – 16.9 | Moderately Underweight | Elevated nutritional risk |
| 17.0 – 18.4 | Mildly Underweight | Some nutritional concern |
| 18.5 – 24.9 | Normal Weight ✓ | Lowest overall health risk |
| 25.0 – 29.9 | Overweight | Mildly increased metabolic risk |
| 30.0 – 34.9 | Obese Class I | Moderate risk of chronic disease |
| 35.0 – 39.9 | Obese Class II | High risk — medical intervention often recommended |
| 40.0+ | Obese Class III | Very high risk — treatment strongly recommended |
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BMI Chart by Height and Weight
Quick reference BMI values for common heights and weights (imperial):
| Height | Underweight (<18.5) | Normal (18.5–24.9) | Overweight (25–29.9) | Obese (30+) |
|---|---|---|---|---|
| 5'0" (152 cm) | <95 lbs | 95–127 lbs | 128–153 lbs | 154+ lbs |
| 5'4" (163 cm) | <108 lbs | 108–145 lbs | 146–175 lbs | 176+ lbs |
| 5'8" (173 cm) | <122 lbs | 122–163 lbs | 164–196 lbs | 197+ lbs |
| 5'10" (178 cm) | <129 lbs | 129–173 lbs | 174–208 lbs | 209+ lbs |
| 6'0" (183 cm) | <136 lbs | 136–183 lbs | 184–220 lbs | 221+ lbs |
| 6'2" (188 cm) | <144 lbs | 144–193 lbs | 194–232 lbs | 233+ lbs |
Does BMI Change With Age?
For adults, the same BMI scale applies at all ages. However, health risk interpretation differs somewhat by age:
- Ages 18-24: Standard ranges apply. High muscle mass in young adults can elevate BMI misleadingly.
- Ages 25-59: Standard BMI categories are most predictive of metabolic disease in this range.
- Ages 60+: Research suggests slightly higher BMI (25-27) may be protective for older adults, who are more vulnerable to the effects of being underweight. Muscle loss (sarcopenia) with aging means body fat % may be higher than BMI suggests.
Some clinicians use "healthy BMI" ranges of 22-27 for adults over 65, rather than the standard 18.5-24.9.
BMI Chart for Men vs Women
The standard BMI scale is the same for men and women. However, the body composition at any given BMI differs significantly:
| BMI | Typical Body Fat % (Men) | Typical Body Fat % (Women) |
|---|---|---|
| 18.5 | ~8-10% | ~20-22% |
| 22 | ~15-17% | ~27-29% |
| 25 | ~20-22% | ~32-34% |
| 30 | ~28-30% | ~39-41% |
Women naturally carry more essential fat (for hormonal function and reproduction) — roughly 5-8% more than men at equivalent BMI. Some researchers argue for female-specific BMI thresholds, though WHO has not changed the official classification.
BMI Chart Adjustments by Ethnicity
Research shows that Asian populations face higher health risks at lower BMI values compared to European populations. The WHO recommends lower cut-off points for Asian populations:
| Category | Standard BMI | Asian-Adjusted BMI |
|---|---|---|
| Overweight | ≥25 | ≥23 |
| Obese | ≥30 | ≥27.5 |
This is because Asian individuals tend to have higher body fat percentages and greater abdominal fat at lower BMI levels than their European counterparts, associated with higher rates of type 2 diabetes and cardiovascular disease at lower BMI values.
How to Read and Use Your BMI Results
If your BMI falls outside the normal range, here is what to do:
If underweight (BMI < 18.5): Talk to a doctor. Underweight can indicate malnutrition, eating disorders, thyroid issues, or other medical conditions. Increasing caloric intake with nutrient-dense foods and strength training is typically recommended.
If overweight (BMI 25-29.9): Focus on waist circumference and metabolic markers (blood pressure, blood sugar, cholesterol). A healthy lifestyle — without necessarily reaching normal BMI — significantly reduces risk. Even 5-10% weight loss at this range improves health outcomes.
If obese (BMI ≥ 30): Consult a healthcare provider. Even modest weight loss (5-7% of body weight) has clinically significant benefits. Lifestyle, dietary, and medical interventions are all options.
→ Find your ideal weight range based on your height.