BrainyCalculators
Login
Advertisement

BMI Calculator

Calculate your Body Mass Index (BMI) using metric or imperial units. See your BMI category, health status, and the healthy weight range for your height.

BMI Formula

Metric: BMI = weight (kg) ÷ height² (m²)
Imperial: BMI = 703 × weight (lbs) ÷ height² (inches²)

How to Use the BMI Calculator

  1. 1
    Choose Your Unit System
    Select Metric (kg/cm) or Imperial (lbs/ft/inches) using the toggle buttons.
  2. 2
    Enter Your Height
    Enter height in centimeters for metric, or feet and inches for imperial.
  3. 3
    Enter Your Weight
    Enter your weight in kilograms or pounds.
  4. 4
    Review Results
    Instantly see your BMI value, weight category, and the healthy weight range for your height.

Example Calculation

A person weighing 70 kg with a height of 175 cm:

Height in meters = 175 cm ÷ 100 = 1.75 m
BMI = 70 ÷ (1.75 × 1.75) = 70 ÷ 3.0625
BMI = 22.9 — Normal weight
Healthy range for 175 cm = 56.7 kg – 76.1 kg
'How can I improve my BMI?', 'answer' => 'A high BMI can be reduced through a combination of a calorie-controlled diet and regular physical activity. For underweight individuals, increasing calorie intake through nutrient-dense foods and strength training is recommended.'], ]" />

Related Calculators

🎂 Daily Life

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes.

Calculate now
📅 Daily Life

Date Difference Calculator

Find the exact difference between two dates in days, weeks, months, and years.

Calculate now
% Math

Percentage Calculator

Calculate percentages, percentage change, and percentage of a number easily.

Calculate now