BMI Calculator

Free BMI calculator for men and women: calculate your Body Mass Index instantly. See your WHO health category, healthy weight range, and BMI chart. Supports metric and imperial units.

Unit System

Height170cm

50250

Weight70kg

10300

Example

Example: Calculate BMI for a 175cm, 70kg Adult

Set Unit to Metric, Height to 175 cm, and Weight to 70 kg. The calculator returns:
• BMI: 22.86
• Category: Normal Weight
• Healthy Weight Range: 57.9 kg – 78.3 kg

Interpreting Your BMI:
• Below 18.5 → Underweight
• 18.5 – 24.9 → Normal (healthy range)
• 25.0 – 29.9 → Overweight
• 30.0+ → Obese

BMI is a screening tool, not a diagnostic test. Athletes with high muscle mass may have a BMI in the overweight range despite low body fat.

Frequently Asked Questions

What is a healthy BMI range?

A BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Is BMI accurate for athletes and muscular individuals?

BMI may overestimate body fat for athletes and muscular individuals because muscle weighs more than fat. Waist circumference and body fat percentage measurements can provide a more complete health assessment.

What are the limitations of BMI?

BMI does not distinguish between muscle and fat, does not account for fat distribution, and may not be accurate for elderly individuals, pregnant women, or children. It is a screening tool, not a diagnostic one.

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