Monitoring your BMI for Type 2 Diabetes control
A healthy BMI is between 18.5 and 24.9 for white and black adults
South Asian adults need to keep their BMI between 18.5 and 22.9
To see if your BMI is in the healthy range see our blog post on causes of Type 2 Diabetes
Calculate your BMI using the formula below. It’s done in metric units so you first need to convert your weight and height into kg and metres
How to convert lb to kg
1lb = 0.45kg
1stone = 6.35kg
How to convert inches to metres
1 inch = 0.0254m
12 inches (1 foot)= 0.3048m
BMI= your weight in kg divided by the square of your height in meters.
To calculate the square of your height multiply your height by your height use the formula below
Weight (kg)
Height(m)xHeight(m)
Here is an example Jane weighs 64kg
She is 1.62m tall
BMI=Â Â Â Â Â 64Â Â Â Â Â Â Â Â Â
1.62×1.62
=64
2.6244
=24.39
Therefore, if Jane is white or black she is JUST inside the healthy range but needs to watch her weight.
If Jane is South Asian then she needs to lose weight (because she’s not going to grow any taller!)
If Jane puts on 2kg (about 4lb) she will move outside of the healthy range for BMI.
It’s easy to keep an eye on your BMI, Just work out your height in meters, multiply it by the same number and SAVE YOUR ANSWER. This will always be the same value because our height doesn’t change.
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