BMI Calculator for Men — With Healthy Weight Range & Body Fat Estimate
Calculate your BMI and see your WHO weight category, the healthy weight range for your height, how much to lose or gain, and a Deurenberg-formula estimate of body fat percentage — all tailored to men.
Units
kg
cm
years
Above healthy range; cardiovascular risk rises modestly
- 1
Height in metres
1.78 - 2
Height squared (m²)
1.78 × 1.78 = 3.1684 - 3
BMI
82 ÷ 3.1684 = 25.9Weight (kg) divided by height squared (m²).
How does this calculator work?
BMI for men = W(kg) / H(m)². WHO categories: underweight <18.5, normal 18.5–24.9, overweight 25–29.9, obese ≥30. Estimated body fat % uses the Deurenberg (1991) formula: BF% = 1.20 × BMI + 0.23 × Age − 16.2 for males. BMI overestimates fatness in muscular men — complement with waist circumference (>102 cm is a risk flag).
Formula
How this is calculated
BMI is calculated identically for men and women: divide body mass in kilograms by the square of height in metres. The same WHO cut-off points apply — underweight below 18.5, normal weight 18.5–24.9, overweight 25–29.9, and obese at 30 or above. However, men and women of the same BMI typically differ in body fat percentage: men carry more muscle at a given BMI, so the same number implies a lower fat fraction.
This calculator adds two features particularly useful for men. First, it converts BMI back to a healthy weight range (BMI 18.5–24.9) for your height, showing how far you are from that range. Second, it applies the Deurenberg (1991) linear equation — BF% = 1.20 × BMI + 0.23 × Age − 10.8 × Sex − 5.4 — with Sex = 1 for males, to estimate body fat percentage. This is a population-level screening estimate with roughly ±3–5% accuracy and should not be used in place of DEXA, hydrostatic weighing or skinfold measurement.
BMI remains a population screening tool, not a precise individual diagnostic. Men with high muscle mass (e.g., bodybuilders) can read as overweight or obese while having low body fat. Waist circumference (>102 cm in men is a risk flag) and waist-to-hip ratio complement BMI for a fuller metabolic risk picture.
Frequently asked questions
The WHO numeric cut-offs (18.5, 25, 30) are the same for adult men and women. However, because men typically carry more muscle, the same BMI implies lower body fat in men than in women. Some researchers argue the overweight threshold for men should be closer to 26–27 on a fat-adjusted basis, but the standard WHO thresholds are still used clinically.
The Deurenberg (1991) formula derives a population-average body fat percentage from BMI and age without requiring skinfold or bioimpedance measurements. It is validated for healthy adults but less accurate at extremes of body composition. Men with very high muscle mass will see an overestimate of body fat.
Some research suggests that slightly higher BMI (up to 27 or 28) is associated with lower mortality in older men, possibly due to protective muscle and fat reserves during illness. Current WHO guidelines still define overweight at ≥25, but a doctor should interpret BMI in older adults alongside muscle mass (sarcopenia risk) and metabolic markers.
TG we-Calculate Editorial Team. (2026). BMI Calculator for Men — With Healthy Weight Range & Body Fat Estimate [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/bmi-men-calculator
TG we-Calculate Editorial Team. "BMI Calculator for Men — With Healthy Weight Range & Body Fat Estimate." TG we-Calculate. 2026. https://we-calculate.com/calculator/bmi-men-calculator.
TG we-Calculate Editorial Team, "BMI Calculator for Men — With Healthy Weight Range & Body Fat Estimate," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/bmi-men-calculator
@misc{wecalculate_bmi_men_calculator, title = {BMI Calculator for Men — With Healthy Weight Range & Body Fat Estimate}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/bmi-men-calculator}}, year = {2026}, note = {TG we-Calculate} }
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