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BMI Calculator — Calculate Body Mass Index

Calculate your Body Mass Index (BMI) using height and weight. Get instant results with your weight category (underweight, normal, overweight, obese) and ideal weight range.

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How to use BMI Calculator — Calculate Body Mass Index

  1. Select metric or imperial units
  2. Enter your height
  3. Enter your weight
  4. View BMI score and weight category

Frequently Asked Questions

What is BMI?
BMI (Body Mass Index) measures body fat based on height and weight. Formula: weight(kg) ÷ height²(m²).
What is a healthy BMI?
18.5–24.9 is healthy. Below 18.5 is underweight, 25–29.9 is overweight, 30+ is obese.
Is BMI accurate?
BMI is a general screening tool. It may not account for muscle mass, age, or ethnicity.
What is the BMI formula?
BMI = kg/m². Imperial: BMI = 703 × lb / in².

Examples

  • Ex 1Height 170cm, Weight 70kg → BMI 24.2 (Normal weight)
  • Ex 2Height 5ft 10in, Weight 200lbs → BMI 28.7 (Overweight)

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