BMI calculator: Calculate body mass index online, free of charge

The BMI (body mass index) is a simple indicator to assess whether your weight is within a healthy range. It helps you to better classify your weight and set appropriate goals, regardless of whether you want to lose, gain or maintain your weight. Food calories, calorie requirements, BMI, here you can find our weight loss calculator and our weight loss tips 2025.

Calculate BMI free of charge

You can calculate your body mass index quickly and easily with our free BMI calculator. Simply enter your weight and height and you will find out what range you are in. Ideal for tracking your progress in losing or gaining weight.

Calculate your BMI free of charge & online

However, the BMI is only a rough guide and does not take into account muscle mass or fat distribution. Therefore, use it as a guide, but combine it with other measurements such as your waist circumference or your calorie requirement.

What is the BMI?

The BMI (body mass index) shows whether your weight matches your height. It is used to assess whether you are underweight, normal weight, overweight or obese (very overweight).

How is the BMI calculated?

This is how the calculation works:

• Take your weight in kilograms
• Multiply your height in meters by itself (height × height)
• Divide your weight by this value

Step-by-step explanation:

1. Weigh yourself and record your weight in kilograms.
2. Measure your height in meters and multiply it by itself.
3. Divide your weight by the result of the multiplication.

Example of BMI calculation:

• Weight: 70 kg
• Size: 1.75 m

This is what the calculation looks like:

1. Square the size: 1.75 × 1.75 = 3.0625
2. Divide weight: 70 ÷ 3.0625 = 22.86

The BMI is 22.86, which is within the normal weight range.

BMI values at a glance

Classification of values

• Under 18.5: Underweight
• 18.5 to 24.9: normal weight
• 25 to 29.9: Overweight
• 30 and over: Obesity

Oh yes, remember: BMI is a simple guideline, but does not take everything into account – such as muscle mass or fat distribution in the body.

Food calorie table – Tip!

Which foods contain how many calories per 100 grams? Our calorie table helps you to keep track. Whether you’re planning your next snack or want to know how many calories your favorite dish contains – the table provides you with the information you need.

• Food calorie table

With our simple search function, you can find all the calorie values for your next meal quickly and free of charge. A must-have for your weight loss success!

You want to lose weight?

My tip: There is only one rule for losing weight properly: you need to know your calorie requirements. If you eat fewer calories than you need, you will lose weight. If you also move, are active and perhaps even do sport, you will burn even more calories! Calculate everything important for your weight loss success here, free of charge and online. Use our tools to analyze your food, calorie requirements, BMI and more. Losing weight is that easy – with the right tools.

• Slimming tips
• Weight loss calculator

Now is the right time to tackle your goals. Use our tips to motivate you and calculate everything you need directly online – from calories to BMI. Your success starts with one small step!