Calorie Calculator
Estimate daily calories from body stats and activity.
Health
OpenBMI Calculator
Calculate body mass index from weight in kilograms and height in centimeters, with a general BMI category.
All processing happens locally in your browser. Your input is never sent to a server or saved by Wraplet.
BMI result
BMI 22.9 - Normal weight
- Category
- Normal weight
Health calculators provide general informational estimates only and are not medical advice, diagnosis, or treatment.
Formula or method
BMI = weight kg / (height m x height m)
Height in centimeters is converted to meters before applying the formula.
Inputs
Use current weight in kilograms and height in centimeters. Enter values above zero for both fields.
Result
The result shows BMI rounded to one decimal place and a broad category such as underweight, normal weight, overweight, or obesity range.
Use cases
- Estimate BMI for personal tracking, health forms, or a quick weight-to-height reference.
How to use
Enter weight in kilograms.
Enter height in centimeters.
Review the BMI number and general category as a screening estimate, not a diagnosis.
Examples
BMI Calculator example
A weight of 70 kg and height of 1.75 m gives 70 / (1.75 x 1.75) = 22.9.
70 kg, 175 cm
BMI 22.9 - Normal weight
Frequently asked questions
Is BMI a medical diagnosis?
No. BMI is a general screening estimate. It does not measure body fat, muscle mass, pregnancy, age-specific needs, or medical history.
What units does this BMI calculator use?
It uses kilograms for weight and centimeters for height, then converts centimeters to meters for the formula.
Why can BMI be misleading for athletes?
BMI uses only weight and height, so people with higher muscle mass may receive a higher BMI even when body fat is not high.
Should I make health decisions from BMI alone?
No. For health decisions, discuss BMI and other measurements with a qualified healthcare professional.