BMI Calculator

Want to know if your weight is in a healthy range? BMI Calculator works out your Body Mass Index in a few taps and shows where you sit on the scale, from underweight to obese.

How to Calculate Your BMI

Enter your weight, height and age. The app calculates your BMI with the standard formula and shows the result on a simple gauge, together with your classification and the healthy weight range for your height. It works in kilograms and centimetres or in pounds, feet and inches.

BMI for Adults and Children

Children’s BMI is read differently from adults’, so the app adjusts the classification by age. That makes it useful for parents checking a child’s weight as well as adults.

Set a Target Weight

Whether you want to lose weight, gain weight or just keep an eye on it, the app shows your ideal weight so you have a clear target for a diet or training plan.

Screenshots

Frequently Asked Questions

What is a healthy BMI? For adults, the WHO classifies a BMI of 18.5 to 24.9 as normal weight. Below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or more is obese.

Does it work for children? Yes. The classification takes the child’s age into account.

Is the BMI Calculator free? Yes, it is free to use.