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BMI Calculator for Women

Calculators Free Updated 26 Oct 2026
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ⓘ About this tool 🔄 Last updated 26 Oct 2026 ✓ Reviewed by TopToolAI Team

BMI calculator for women: enter your weight in kilograms and your height in centimeters to see your Body Mass Index as an adult woman, the BMI category it falls in, and the weight range that is healthy for your height. The adult BMI categories are the same for women and men, but the body behind the number is not: at the same BMI, women generally carry a higher percentage of body fat than men, which is normal. A woman's BMI is also not meant to be used while she is pregnant, because weight gain is expected and healthy, and doctors track it against the BMI from before the pregnancy instead. This page shows the WHO waist limits for women too, 80 cm for increased risk and 88 cm for substantially increased risk. For example, a woman who weighs 62 kg and is 1.60 m tall has a BMI of about 24.2, which is in the normal range of 18.5 to 24.9. Below 18.5 is underweight, 25 to 29.9 is overweight and 30 or above is obese. Treat the result as a screening number and talk to a doctor about anything that worries you.

How to use BMI Calculator for Women

Step-by-step guide to the boxes below. Open it only if you need help.

  1. 1
    Weight (kg) Text

    Type your weight in kilograms. If your scale shows pounds, divide by 2.2 first (150 lb is about 68 kg). Weigh yourself in the morning if you want a steady, comparable number.

    Example: 70

  2. 2
    Height (cm) Text

    Type your height in centimetres, not feet. Quick conversion: total inches x 2.54, so 5 ft 9 in (69 in) is about 175 cm. Stand straight without shoes when you measure.

    Example: 175

  3. 3
    Press “Calculate BMI”

    Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.

  4. 4
    Read your result

    You get your BMI, the band it falls in, a short note on body fat and pregnancy for women, your healthy weight range and the WHO waist limits for women. Change any box and try again to compare different numbers.

For adult women aged 20 and over. BMI is not meant to be used during pregnancy.

BMI Calculator for Women FAQs

What is a normal BMI for a woman?
For an adult woman the normal BMI range is 18.5 to 24.9. Below 18.5 is underweight, 25 to 29.9 is overweight and 30 or more is obese.
Is BMI different for women?
The formula and the adult categories are the same as for men. The difference is in how to read it: at the same BMI, women generally carry a higher percentage of body fat than men, which is normal and linked to biology.
Can I use a BMI calculator during pregnancy?
No. BMI is not meant to be used while pregnant, because weight gain is expected and healthy. Doctors and midwives track weight gain in pregnancy against your BMI from before you were pregnant.
Which waist size is a warning sign for women?
WHO treats a waist of 80 cm or more as increased risk and 88 cm or more as substantially increased risk. The Waist-to-Hip Ratio Calculator on this site can check your waist and hips together.
What is a healthy weight for a woman at 5 ft 4 in (163 cm)?
The healthy BMI range at 163 cm works out to roughly 49 to 66 kg (108 to 146 lb). The calculator shows the range for your exact height.
Does BMI change after menopause or with age?
The BMI categories do not change with age for adults, but body fat tends to rise and muscle to fall as women get older, so the same BMI can mean more body fat. Waist size is a useful extra check.

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