24.7 normal weight
BMI for 80 kg and 180 cm is 24.7
About 80 kg at 180 cm
- This weight is in the "normal weight" band, a World Health Organization population statistic. At 180 cm, it runs from 59.9 kg to 80.8 kg.
- This weight is inside the normal range.
- At 185 cm, the same 80 kg gives a BMI of 23.4.
- BMI does not distinguish muscle from fat — a trained athlete often reads as "overweight" on this scale. It does not apply to children, to pregnancy or to the very old.
Examples
What you get
BMI, worked out on the spot
Enter your weight and height and get the index, with no steps in between.
With the WHO band
See which band of the World Health Organization's population statistics the value falls in, and the weight range for your height.
Decimals welcome
Weight can be entered with a decimal, written with either a point or a comma — 68.5 kg, for example.
Nothing is stored
Your weight and height stay on your page. We do not store them or send them anywhere.
How it works
- Enter your weight, in kilograms.
- Enter your height, in centimetres.
- You get your BMI, the WHO band, and what it means at your height.
Worth knowing
What the formula shows
BMI is weight in kilograms divided by height in metres, squared. Because height is squared, a few extra centimetres change the result more than you would expect — the page shows exactly how much, at a height 5 cm taller.
What BMI does not show
BMI does not distinguish muscle from fat, so a trained athlete often reads as "overweight" on this scale. It does not apply to children, to pregnancy or to the very old — for them a healthy weight is worked out differently. The bands above are World Health Organization population statistics, not a verdict about any one person.
Frequently asked questions
Can I use a comma for decimals?
Yes. Both 68.5 and 68,5 work — the page understands either and writes back the form your language uses.
Does BMI apply to everyone?
No. It does not apply to children, to pregnancy or to the very old, for whom a healthy weight is worked out differently.
Does BMI account for muscle?
No. The formula does not distinguish muscle from fat, so a very fit person can read as overweight despite having little excess fat.
Why does BMI differ so much at a slightly different height?
Because the formula divides by height squared. A small difference of a few centimetres changes the result more than the same small difference in weight.