BMI Calculator for Men and Women: Healthy Range Charts

BMI varies between men and women in terms of healthy body fat distribution, though the formula itself is the same. This guide covers ideal BMI ranges and what the numbers mean for each sex.

BMI Formula (Same for All)

Metric:

BMI = Weight (kg) / Height (m)²

Imperial:

BMI = (Weight (lbs) × 703) / Height (in)²

Standard BMI Categories (WHO)

| BMI | Category | |-----|----------| | Below 18.5 | Underweight | | 18.5 – 24.9 | Normal weight | | 25.0 – 29.9 | Overweight | | 30.0 – 34.9 | Obese Class I | | 35.0 – 39.9 | Obese Class II | | 40.0 and above | Obese Class III |

BMI Differences by Sex

Women naturally carry 8–10% more body fat than men at the same BMI due to hormonal differences and reproductive physiology. A BMI of 22 in a woman represents a higher fat percentage than the same BMI in a man.

Some researchers suggest slightly different thresholds:

• Men: healthy BMI 18.5–24.9 (same as WHO)
• Women: healthy BMI 18.5–23.9 (slightly lower upper limit)

However, the standard WHO thresholds are used clinically for both sexes.

BMI by Height — Quick Reference

Men (medium frame)

| Height | Healthy Weight Range | |--------|---------------------| | 5'7" (170 cm) | 121–153 lbs (55–69 kg) | | 5'9" (175 cm) | 128–162 lbs (58–74 kg) | | 5'11" (180 cm) | 136–172 lbs (62–78 kg) | | 6'1" (185 cm) | 144–182 lbs (65–83 kg) |

Women (medium frame)

| Height | Healthy Weight Range | |--------|---------------------| | 5'3" (160 cm) | 107–141 lbs (49–64 kg) | | 5'5" (165 cm) | 114–149 lbs (52–68 kg) | | 5'7" (170 cm) | 121–153 lbs (55–69 kg) | | 5'9" (175 cm) | 128–162 lbs (58–74 kg) |

Limitations of BMI

BMI is a screening tool, not a diagnosis. It doesn't account for:

• Muscle mass: Athletes often have high BMI despite low body fat
• Age: Older adults may be healthy at lower BMI
• Ethnicity: Asian populations show higher health risks at lower BMI (threshold often 23.0)
• Body fat distribution: Abdominal fat is riskier than fat elsewhere

Waist circumference (above 35 in women, 40 in men) is often a better predictor of metabolic risk.

Use our BMI Calculator to calculate your BMI with both metric and imperial units and see your weight category instantly.