Step by step
- Choose kg / cm or lb / ft in in the calculator.
- Enter your weight and height.
- Read your BMI and the WHO category.
- Check the healthy weight range for your height (BMI 18.5–24.9) shown below your result.
At a glance
| BMI range | WHO category | What it means |
|---|---|---|
| Below 18.5 | Underweight | Weight is below the standard healthy range for your height. |
| 18.5 to 24.9 | Healthy weight | Standard adult range associated with lower health risk. |
| 25.0 to 29.9 | Overweight | Above the standard range; muscle mass can also raise BMI. |
| 30.0 or higher | Obesity | Higher weight range; consult a doctor for personal context. |
Related questions
How is the healthy weight range calculated?
It uses the standard BMI formula in reverse, multiplying your height in meters squared by 18.5 for the lower limit and by 24.9 for the upper limit.
What is a healthy BMI for a 5'4" female?
For any adult who is 5 ft 4 in (about 1.63 m) tall, a healthy BMI of 18.5 to 24.9 corresponds to roughly 108 to 145 lb (49 to 66 kg).
Does ideal weight depend on muscle mass?
Yes. BMI does not measure body fat directly, so very muscular people can score in the overweight range even with low body fat.
More questions: bmi calculator
- How to Calculate BMI
- What Is BMI?
- What Is a Healthy BMI?
- Is the BMI Calculator Different for Women and Men?
- Can BMI Be Used for Children and Teens?
- Can BMI Be Used During Pregnancy?
- How Does BMI Apply to Seniors?
- Why Is My BMI High When I Have Muscle?
- BMI Calculator vs. Body Fat Percentage: Which Should You Use?
- How to Check Your BMI on an iPhone Without an App
- How to Use a BMI Calculator in kg and Feet or cm
Open the full bmi calculator →
Updated November 14, 2026.