# Body Mass Index (BMI) formula

Here is BMI formula if you don’t want to use our Body Mass Index Calculator and calculate body mass index manually.

It is very simple:

• Imperial or English BMI formula:
BMI = [weight_in_pounds / (height_in_inches * height_in_inches)] *703
Example: weight = 145lbs, height = 6 ft 1 in (ie 73 inches) and BMI = [ 145 / (73 * 73) ] * 703 = 19.13
• Metric BMI formula:
BMI = weight_in_kilograms / (height_in_meters * height_in_meters)
Example: weight = 70kg, height = 1.80m and BMI = 70 / (1.8 * 1.8) = 21.6

Here is how you can do if you want to use this formula with simple calculator on your PC or on phone:

## Imperial

1. weight_in_pounds
2. /
3. height_in_inches
4. /
5. height_in_inches
6. *
7. 703
8. =

## Metric

1. weight_in_kilograms
2. /
3. height_in_meters
4. /
5. height_in_meters
6. =

Check BMI charts (imperial or metric) into which category your Body Mass Index falls.

## One Reply to “Body Mass Index (BMI) formula”

1. Xing Xiaofan says:

I happened to click on your website randomnly while searching for a math calculator. And this BMI calculator was just awesome. Thank you.. https://wesharespaces.group/