Metric example
A person weighs 70 kg and is 175 cm tall.
BMI is 22.9, which is in the normal range.
This height and weight combination falls inside the standard healthy band.
BMI Calculator
Use this when you want a fast read on how your weight compares with your height.
Inputs
BMI Calculator
Check your body mass index and healthy weight range.
Results
Body mass index
See your BMI score, weight category, and healthy range side by side.
BMI
22.86
Body mass index score.
Category
Normal weight
Standard BMI weight class.
Healthy weight range
56.66-76.26 kg
Based on a BMI between 18.5 and 24.9.
Quick take
A quick read before you calculate
Use this when you want a fast read on how your weight compares with your height.
Formula
BMI formula
Examples
2-3 real scenarios to make the result easier to trust.
FAQ
Clear answers to the questions people usually ask first.
Formula
BMI formula
BMI = weight ÷ height², with height measured in meters or converted from inches.
BMI is a screening tool, not a diagnosis. It gives a general range, not a full health picture.
Examples
Imperial example
A person weighs 154 lb and is 5 ft 9 in tall.
BMI is 22.8, which is in the normal range.
The BMI result is similar after converting the units.
Higher BMI example
A person weighs 205 lb and is 5 ft 10 in tall.
BMI is 29.4, which is in the overweight range.
This is a quick signal that the current weight is above the healthy band for that height.
When to use
Use it when setting a fitness goal, checking weight against height, or comparing a target range with your current measurements.
Common mistakes
- Using height in the wrong unit.
- Forgetting to square the height before dividing.
- Treating BMI as the only health indicator.
FAQ
What does BMI measure?
BMI compares weight to height and places the result into a broad category.
Is BMI a medical diagnosis?
No. BMI is only a screening number and does not replace professional advice.
Next step
Want a better health tracking habit?
A simple calculator can help you keep an eye on your starting point before you set a fitness target.
Recheck BMI when your weight or height inputs change.