BMI Calculator

BMI Calculator 2018-02-21T22:08:30+00:00

Calculate your BMI using our BMI calculator below

What is BMI and why does it matter?

Body mass index (BMI), is a measure of your body fat based on your height and weight. BMI is a good way to assess if your weight is healthy or unhealthy and of course, to get an idea of how much weight you might need to lose.

Body Mass Index Calculator

1Enter your height:
2 Enter your weight:

Your BMI is: ?

This means you are: ?

What your BMI means

BMI CalculatorSo, you’ve used the BMI calculator above to calculate your BMI or Body Mass Index to give it its full name and you have a number. But what does your BMI score mean and how can it help you lose weight?

Your BMI let’s you see how your body weight differs from what is considered normal, healthy or desirable for someone of your height. Remember though that although some of the excess weight may be down to body fat, some other factors such as how muscular you are, also affect BMI significantly – check your body fat percentage to help you find out how your BMI is made up.

BMI Category

BMI (kg/m2)

 What your BMI means from to
Very severely underweight  < 15 15
Severely underweight 15 16
Underweight 16 18.5
Normal (healthy weight) 18.5 25
Overweight 25 30
Obese Class I (Moderately obese) 30 35
Obese Class II (Severely obese) 35 40
Obese Class III (Very severely obese) 40  40+

What next?

Try our free TDEE calculator to see how many calories your body uses every day.


All the weight loss, calorie, fat burning, BMI, BMR and diet planning calculators you’ll ever need.

All free and all in one place!

Not only that, our weight loss planner factors in how your metabolism really works to predict how long it’ll take to reach a particular weight loss goal.


From the Atkins diet to the South Beach diet and from low carb to low fat diets, you’ll find them here.

Check out the differences between the diet types and find out what we think works.

Anni’s Blog

I’m Anni, I’ve lost over 55lbs in weight and admit it’s been a life long struggle. Now at 50 +, I’m sharing what I’ve learned along the way.

Read my weight loss blog for tips, tricks and insights into staying motivated on the weight loss journey.