Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
BMI Calculator
Body Mass Index (BMI) is the most widely used screening tool for relating a person's weight to their height. It produces a single number that places adults into broad weight categories — underweight, healthy weight, overweight, or obese — and is used by the WHO, the CDC, and the NHS as a first-pass indicator of weight-related health risk. Enter your weight in kilograms and height in centimetres and the calculator returns your BMI in kg/m². The result is meant as a starting point for a conversation with a clinician, not a diagnosis on its own.
Calories Burned Calculator
Estimate calories burned during exercise from body weight, activity intensity (METs), and duration. Use it to track exercise contribution to your daily calorie balance and to compare relative energy cost of different activities.
Key differences
| BMI Calculator | Calories Burned Calculator | |
|---|---|---|
| Category | Health | Health |
| Inputs required | 2 | 3 |
| Result | Your BMI | Calories Burned (calories) |
| What it does | Body Mass Index (BMI) is the most widely used screening tool for relating a person's weight to their height. It produces a single number that places adults into broad weight categories — underweight, healthy weight, overweight, or obese — and is used by the WHO, the CDC, and the NHS as a first-pass indicator of weight-related health risk. Enter your weight in kilograms and height in centimetres and the calculator returns your BMI in kg/m². The result is meant as a starting point for a conversation with a clinician, not a diagnosis on its own. | Estimate calories burned during exercise from body weight, activity intensity (METs), and duration. Use it to track exercise contribution to your daily calorie balance and to compare relative energy cost of different activities. |