Skip to content
Toolden

TOOLDENCALCULATORSON-DEVICE

BMI Calculator

Enter your height and weight to see your body mass index, its category and the healthy weight range for your height. Everything runs in your browser.

Centimetres, try 170 which is about average adult height. Switch units anytime, we convert for you automatically.

Kilograms, try 65. Result updates live as you type.

Formula: BMI equals weight in kg divided by height in m squared. For example, 65 kg at 1.70 m is 22.5. Healthy range is 18.5 to 24.9 for your height. BMI is a screening hint, not a diagnosis.
Your numbers stay on your device. Nothing is sent to a server. Change height and weight on the left and watch the result on the right update instantly.
BMI22.5kg/m2
CategoryNormal weightLovely spot to be in. Keep the habits that got you here.
Where you sit on the scale
1518.5253035
UnderNormalOverObese

Your dot shows where 22.5 lands between underweight on the left and obese on the right. The green middle is the healthy window.

Healthy weight range53.5 - 72.0 kgFor 170 cm, staying inside this range keeps BMI between 18.5 and 24.9.You are inside your healthy window, nice and steady

Your BMI is 22.5 (Normal weight). For 170 cm, a healthy weight is between 53.5 and 72.0 kg.

Enter height and weight on the left, result updates live on the right. All math runs in your browser and your numbers never leave your device.

HOW TO USE

  1. 1On the left, pick your height unit and type your height. Try 170 cm if you want an example.
  2. 2On the left, pick your weight unit and type your weight. The result on the right updates instantly as you type.
  3. 3On the right, read your BMI and category, see your dot on the simple scale, and copy the healthy weight range for your height.

EXAMPLE

INPUT

Height: 170 cm · Weight: 65 kg

OUTPUT

BMI 22.5 Normal weight
Healthy range for 170 cm: 53.5 - 72.0 kg

FAQ

How is BMI calculated?
BMI is weight in kilograms divided by the square of height in metres. The formula is the same everywhere; this tool just handles the unit conversion for you.
What do the BMI categories mean?
Underweight is below 18.5, Normal is 18.5–24.9, Overweight is 25–29.9, and Obese is 30 or above.
Can I use feet, inches and pounds?
Yes. Height supports cm, metres and feet; weight supports kilograms and pounds. All conversions happen in the tool.
Is BMI a medical diagnosis?
No. BMI is a screening measure. It does not account for muscle mass, age or body composition. Consult a healthcare professional for advice.

RELATED TOOLS

Percentage Calculator↗Unit Converter↗Age Calculator↗Tip Calculator↗