Free tool
BMI Calculator
Check your body mass index and healthy weight range.
Check your body mass index and healthy weight range. BMI Calculator runs completely inside your browser, so it is instant, private and free to use as often as you like — no account, no upload, no waiting.
23.5
Healthy weight
Healthy range for your height: 53.5–72.0 kg
Features
- Runs 100% in your browser — your data never leaves your device
- Instant results with no sign-up, install or usage limit
- Works on mobile, tablet and desktop
- Copy or download the result in one tap
How to use BMI Calculator
- 1Open BMI Calculator and enter or upload your input above.
- 2Adjust the available options until the result matches what you need.
- 3Review the output, then copy or download it.
What is BMI?
Body Mass Index divides your weight in kilograms by the square of your height in metres. It is a quick population-level screening number: below 18.5 is underweight, 18.5–24.9 is the healthy range, 25–29.9 is overweight and 30 or more is obese.
Why use BMI Calculator?
Most alternatives ask you to register, queue your file on a server, or bury the result under adverts. BMI Calculator loads in under a second, keeps your input on your own device, and gives you a clean result you can copy straight away — which matters when you use a utility like this several times a day.
Example
Drop in a real sample, hit the action button and BMI Calculator returns the finished result immediately. Try it with a small input first to see the format, then reuse it for the real work.
Frequently Asked Questions
- Is BMI accurate for everyone?
- It is a rough screening tool. Athletes with high muscle mass and older adults can be misclassified, so treat it as one signal, not a diagnosis.
- Is my data stored?
- No — your height and weight stay in the browser and are never sent anywhere.