BMI Calculator

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BMI Calculator
BMI Calculator

Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. View the BMI tables or use the tool below to compute yours.

  • Enter your weight and height using standard or metric measures.
  • Select “Compute BMI” and your BMI will appear below.

BMI table for adults

This is the World Health Organization’s (WHO) recommended body weight based on BMI values for adults. It is used for both men and women, age 18 or older.

BMI formula

BMI formula calculator guide

BMI Chart – Adults (Age 20+)

BMI Weight Status
Below 18.5 Underweight
18.5 – 24.9 Normal or Healthy Weight
25.0 – 29.9 Overweight
30.0 and above Obese

 

Category BMI range – kg/m2
Severe Thinness < 16
Moderate Thinness 16 – 17
Mild Thinness 17 – 18.5
Normal 18.5 – 25
Overweight 25 – 30
Obese Class I 30 – 35
Obese Class II 35 – 40
Obese Class III > 40

Other Converter

BMI chart for adults

BMI chart for adults

BMI table for children and teens, age 2-20

The Centers for Disease Control and Prevention (CDC) recommends BMI categorization for children and teens between age 2 and 20.

BMI chart for children and teens, age 2-20

The Centers for Disease Control and Prevention (CDC) BMI-for-age percentiles growth charts.

Chart for boys
Chart for girls

Category Percentile Range
Underweight <5%
Healthy weight 5% – 85%
At risk of overweight 85% – 95%
Overweight >95%

 

People also ask

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Do doctors still use BMI?

Is it okay to be a little chubby?

Questions for your doctor

  • When should I be concerned with my child’s weight?
  • When should I start checking my BMI? How often should I check?
  • What is my ideal weight?
  • What is my child’s ideal weight?
  • Does BMI account for muscle?
  • How can I reduce my BMI?
  • How can I help my child reduce his or her BMI?
  • How long will it take to reduce BMI?

 

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