Your BMIHeart Matters

What does BMI mean?

BMI stands for Body Mass Index. It gives you an idea of whether you’re underweight, overweight or an ideal weight for your height. It’s useful to know because when your weight increases (or decreases) outside of the ideal range, health risks may also increase.

Look up your BMI

Find your height at the top or bottom of the chart. Follow the column up or down until you reach your weight to get your BMI rating. Click on the relevant box below to see what your rating means.

Print chart here

Very overweight

Very Overweight

BMI 30+

Tell me more

Overweight

Overweight

BMI 25 - 30

Tell me more

Healthy

Healthy

BMI 18.5 - 25

Tell me more

Underweight

Underweight

BMI less than 18.5

Tell me more

BMI calculator chart BMI calculator chart

How accurate is the BMI?

The BMI is a useful measurement for most people over 18. But there are limitations to this system. For instance:

  • Adults with a very athletic build (eg, professional athletes) could show as overweight. This is because muscle weighs more than fat and the BMI does not take this into account.
  • If you’re pregnant, the BMI does not apply. You should seek advice from your doctor or midwife on what a healthy weight is.
  • View special charts for children and young people under 18.

See your doctor if you require a more precise reading.