BMI Calculator for Women
Calculate your Body Mass Index quickly and accurately. Enter your height and weight to see your BMI, your weight category, and a healthy weight range tailored to your height.
Calculate Your BMI
Enter your height and weight below to get your BMI, weight category, and a healthy weight range instantly. Switch between metric and imperial units at any time.
Your Measurements
Enter your height and weight to calculate your BMI
Your BMI Result
Body Mass Index and weight category
How BMI Is Calculated
BMI uses a simple formula based on height and weight to estimate whether a person’s weight falls within a typical range for their height.
Convert to Metric
Height is converted to metres and weight to kilograms, since the BMI formula is defined using these units.
Apply the Formula
BMI equals weight in kilograms divided by height in metres, squared: BMI = kg ÷ (m × m).
Match the Category
The resulting number is compared against standard adult BMI ranges to determine a weight category.
BMI Categories for Women
Standard adult BMI classifications used by the World Health Organization. These ranges apply to most adult women but do not account for pregnancy, muscle mass, or frame size.
| Category | BMI Range | Example (5’5″ / 165cm) |
|---|---|---|
| Underweight | Below 18.5 | Below 50 kg / 110 lb |
| Healthy Weight | 18.5 – 24.9 | 50 – 68 kg / 110 – 150 lb |
| Overweight | 25.0 – 29.9 | 68 – 81 kg / 150 – 179 lb |
| Obesity | 30.0 and above | Above 81 kg / 179 lb |
BMI Calculator FAQ
Everything you need to know about calculating and interpreting BMI for women.
No. The BMI formula, weight divided by height squared, is identical for everyone. However, doctors interpret the result alongside factors more common in women’s health, such as pregnancy, menopause, and typically higher essential body fat percentages, since BMI does not measure body composition.
For most adult women, a BMI between 18.5 and 24.9 is classified as a healthy weight range by the World Health Organization. This range applies broadly and does not account for muscle mass, frame size, or pregnancy.
No. BMI is based only on height and weight, so it cannot distinguish between muscle, fat, and bone. A muscular or athletic woman may show a higher BMI despite having a low body fat percentage.
Standard BMI calculations are not designed for pregnancy and should not be used to assess a pregnant woman’s weight. Pregnancy weight gain is tracked using pre-pregnancy BMI and guidance from a healthcare provider instead.