# BMI calculator

Work out your body mass index, with Asian cut-offs

Use it at https://www.quicktoolz.com/tools/bmi-calculator. From QuickToolz.

BMI stands for body mass index. It’s your weight in kilograms divided by your height in metres squared. For most adults, a BMI of 18.5 to 24.9 is called healthy. For Asian adults, including in India, lower cut-offs are often used, with 23 as the start of overweight.

## How it works

BMI = weight in kg ÷ height in metres²

BMI is a quick screen, not a diagnosis. It doesn’t measure body fat directly, so a muscular person can have a high BMI.

Your height and weight stay in your browser. They only go in a share link if you tick the box.

Worked example: For 65 kg and 1.70 m: 65 ÷ (1.70 × 1.70) = 22.5.

## Examples

| Height | Weight | BMI | Band (Asian cut-offs) |
| --- | --- | --- | --- |
| 160 cm | 50 kg | 19.5 | Healthy |
| 170 cm | 65 kg | 22.5 | Healthy |
| 170 cm | 72 kg | 24.9 | Overweight |
| 180 cm | 90 kg | 27.8 | Obese |

## What this tool doesn't cover

- This is for adults. It isn’t for children, or during pregnancy.
- It doesn’t measure body fat or overall health. This isn’t medical advice.

## Questions

### Why are the Asian cut-offs lower?

Health risks tend to start at a lower BMI in Asian populations, so many guidelines use lower bands.

### Is BMI accurate?

It’s a useful rough guide for groups of people, but it can mislead for one person. Talk to a doctor about your own health.

### Can children use this?

No. Children need age and sex charts, so please ask a doctor.

### How do I calculate BMI?

Divide your weight in kilograms by your height in metres squared. At 70 kg and 1.75 m, BMI is about 22.9.

### What is a healthy BMI?

For most adults, the World Health Organization uses 18.5 to 24.9. Lower cut-offs are often used for South Asian adults. Your doctor can advise you.

## Sources

- [World Health Organization](https://www.who.int/data/gho/data/themes/topics/topic-details/GHO/body-mass-index)