Enter Height cm and Weight kg to review body mass index with this tool. BMI is a size-related screening measure.
For adults, a BMI from 18.5 to 24.9 is generally classified as the normal range.
Important: Adult BMI is a screening estimate, not a diagnosis. It does not directly measure body fat or account for pregnancy, muscle mass, medical history, ethnicity-specific risk thresholds or growth patterns in children and teenagers.
BMI = Weight (kg) ÷ Height² (m²)The calculation links Height cm and Weight kg to body mass index. BMI is a size-related screening measure. People with the same BMI can have different muscle mass, fat distribution and health circumstances.
Enter Height cm and Weight kg to review body mass index with this tool. BMI is a size-related screening measure.
Calculate the relationship between weight and height squared. Use the result to understand an adult BMI screening value rather than to measure body fat directly.
BMI is a size-related screening measure. People with the same BMI can have different muscle mass, fat distribution and health circumstances.
Prepare Height cm and Weight kg. Select the measurement system and enter measured height and weight; check feet-and-inches fields individually if that format is offered.
BMI is a size-related screening measure. People with the same BMI can have different muscle mass, fat distribution and health circumstances. Adult categories are not a substitute for pediatric growth references, pregnancy assessment or individual clinical judgment. BMI alone does not diagnose health.
Use the full settings in the worked-example table. They produce Body Mass Index: 22.9. Compare the method and units as well as the displayed number.
The displayed relationship is BMI = Weight (kg) ÷ Height² (m²) Select the measurement system and enter measured height and weight; check feet-and-inches fields individually if that format is offered.
Adult categories are not a substitute for pediatric growth references, pregnancy assessment or individual clinical judgment. BMI alone does not diagnose health. For personal care, discuss the measurements and method with a qualified clinician.
Worked bmi calculator example. Set Height cm = 175; Weight kg = 70. The corresponding output is Body Mass Index: 22.9. BMI is a size-related screening measure.
Calculate the relationship between weight and height squared. Use the result to understand an adult BMI screening value rather than to measure body fat directly.
Select the measurement system and enter measured height and weight; check feet-and-inches fields individually if that format is offered.
| Field | Example value | Entry check |
|---|---|---|
| Height cm | 175 | Use the measurement unit printed beside this field and a consistent measuring technique. |
| Weight kg | 70 | Use the measurement unit printed beside this field and a consistent measuring technique. |
Relationship used for this example: BMI = Weight (kg) ÷ Height² (m²)
BMI is a size-related screening measure. People with the same BMI can have different muscle mass, fat distribution and health circumstances.
| Output | Displayed result |
|---|---|
| Body Mass Index | 22.9 |
With these settings, body mass index is 22.9. Use the same units and calculation mode when reproducing this example.
BMI is a size-related screening measure. People with the same BMI can have different muscle mass, fat distribution and health circumstances. Adult categories are not a substitute for pediatric growth references, pregnancy assessment or individual clinical judgment. BMI alone does not diagnose health.
Replace the illustrative height cm value (175) with your own value, then complete the other inputs for the same scenario. Select the measurement system and enter measured height and weight; check feet-and-inches fields individually if that format is offered.