Calculate Body Mass Index with metric/imperial units and gender-specific healthy ranges.
Healthy Weight Range: -
Select your unit system — Choose between Metric (kg/cm) or Imperial (lbs/ft). Results update automatically when you switch.
Select your gender — Choose Male or Female. BMI healthy weight ranges differ by gender for more accurate assessments.
Enter your details — Input your height and weight. The calculator updates in real time — just start typing.
View your results — See your BMI value, weight category, and personalized healthy weight range.
BMI is calculated as weight (kg) divided by height (m²). For metric: BMI = kg/m². For imperial: BMI = 703 × lbs/in².
This calculator supports both metric and imperial units, with real-time results as you type. Select your gender to see personalized BMI categories and healthy weight ranges.
Healthy ranges by gender:
Normal BMI ranges differ by gender. For males, the healthy range is 18.5 to 24.9. For females, it's 18.0 to 23.9 due to physiological differences in body composition. This calculator automatically adjusts the ranges based on your selection.
Women typically have higher body fat percentages than men at the same BMI due to biological factors. As a result, some health organizations recommend slightly different BMI ranges for males and females for more accurate health assessments.
Metric: BMI = weight (kg) ÷ height (m)². For example, 70 kg ÷ (1.75 m)² = 22.86. Imperial: BMI = 703 × weight (lbs) ÷ height (in)². For example, 703 × 154 lbs ÷ (69 in)² = 22.76.
The healthy weight range depends on your height and gender. This calculator provides personalized ranges based on your inputs. For a 175cm male, the range is approximately 56.7-76.4 kg (125-168 lbs). For a female of the same height, it's about 55.1-73.2 kg (121-161 lbs).
BMI is a general indicator and may not be accurate for everyone. It doesn't account for muscle mass, bone density, or body composition. Athletes with high muscle mass may have a high BMI despite being healthy. Always consult a healthcare professional for personalized advice.
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