BMI Calculator for Women

Calculate your Body Mass Index and see your healthy weight range, plus a body fat percentage guide built around female health benchmarks.

ft
in
lb

Your BMI result

23.4
Your BMI
Normal weight
Category

Healthy weight range for your height

114.6 lb – 154.3 lb

Body fat percentage reference for women

BMI and body fat percentage measure different things. Use this chart as a separate reference, not a conversion of the BMI result above.

Essential fat10–13%
Athletes14–20%
Fitness21–24%
Average25–31%
Obese32%+

These BMI categories are built for non-pregnant, non-breastfeeding adults. If you are pregnant or nursing, ask your doctor which weight-tracking method fits your situation instead.

Category thresholds follow the World Health Organization's adult BMI classification. Body fat ranges follow the American Council on Exercise classification for women. This tool gives a general screening estimate, not a medical diagnosis, and every calculation runs locally in your browser.

A BMI Reading Built Around Female Health Data

The BMI formula is the same for everyone, but how it should be read is not. Women naturally carry more body fat than men at the same BMI, and healthy body fat ranges shift with fitness level. This calculator gives you your BMI, your healthy weight range, and a body fat percentage chart built specifically for women, so you are not left with one number and no context.

Metric · Imperial · Instant Result

Why Use This Calculator?

Built Around Female Health Benchmarks

The body fat chart uses ranges reported for women specifically, instead of reusing a men's scale that reads differently on a female body.

A Range, Not Just One Number

Instead of only a single BMI value, you get the full healthy weight range for your exact height, in your preferred units.

Works With Any Units

Switch between feet and inches or centimeters and kilograms with one click, with no need to convert numbers by hand.

Private by Design

Health numbers are personal. Every calculation runs in your browser, and nothing you enter is uploaded or stored.

How this BMI Calculator for Women works

This calculator converts your height and weight into Body Mass Index using the standard formula: weight in kilograms divided by height in meters, squared. Enter your numbers in feet, inches, and pounds, or in centimeters and kilograms — the conversion between the two happens automatically, so switching units never changes your underlying result.

The BMI figure is then checked against the World Health Organization's adult classification: under 18.5 is underweight, 18.5 to 24.9 is normal weight, 25 to 29.9 is overweight, and 30 and above splits into three obesity classes. From that same formula, the tool works backward to find the exact weight range that keeps you inside the normal-weight band at your current height, so you see a target range instead of a single pass-or-fail number.

Because BMI cannot distinguish fat from muscle or bone, the results panel adds a separate body fat percentage chart built on the American Council on Exercise's classification for women, which runs several points higher than the equivalent chart for men at every fitness level. This is a reference table, not a conversion of your BMI, since the two measurements capture different things. A note beside the result also flags that these categories were built for non-pregnant, non-breastfeeding adults. Every calculation happens locally in your browser, so none of your height, weight, or results are uploaded or stored.

How to use this BMI Calculator for Women

1

Choose your units

Switch between imperial (feet, inches, pounds) and metric (centimeters, kilograms) at any time — your result updates instantly either way.

2

Enter your height and weight

Type in your current height and weight. There is no sign-up and no data leaves your browser.

3

Read your BMI and healthy range

See your BMI, its category, your healthy weight range for that height, and a body fat percentage chart built for women.

Example Usage

A 5 ft 6 in adult woman entering her height and weight in imperial units:

Input
Height: 5 ft 6 in (167.6 cm) · Weight: 145 lb (65.8 kg)
Output
BMI: 23.4 Category: Normal weight Healthy range: 114.4–153.8 lb (51.9–69.8 kg)

Frequently Asked Questions

Is BMI calculated differently for women than for men?
No. The formula itself — weight in kilograms divided by height in meters squared — is the same for everyone. What differs is how the result should be read. At the same BMI, women typically carry more body fat than men, which is why this tool pairs your BMI with a body fat percentage chart built specifically for women.
What is a healthy BMI range for women?
The World Health Organization sets 18.5 to 24.9 as the normal-weight range for adult women and men alike. Below 18.5 is classed as underweight, 25 to 29.9 as overweight, and 30 or above as obese. This calculator shows your exact weight range within that healthy band for your specific height.
Does BMI account for body fat percentage or muscle mass?
No, and this is BMI's best-known limitation. It only uses height and weight, so it cannot tell the difference between fat, muscle, and bone. That is exactly why we included the separate body fat percentage chart below your result — check both numbers rather than relying on BMI alone.
Can I use this calculator while pregnant or breastfeeding?
The standard BMI categories were not built for pregnancy or breastfeeding, since healthy weight gain during those periods follows entirely different guidelines. If you are pregnant or nursing, talk to your doctor or midwife about the weight ranges that apply to you instead of using this result.
Why do women have more body fat than men at the same BMI?
Female bodies naturally store more essential fat to support hormone production, menstruation, pregnancy, and breastfeeding. Research on body composition consistently shows women carrying roughly 6 to 11 percentage points more body fat than men at an identical BMI, which is why a fitness-level body fat percentage for women sits noticeably higher than for men.
Does a healthy BMI change with age or after menopause?
The BMI category thresholds themselves stay the same throughout adult life. What tends to shift after menopause is body composition — many women see fat redistribute toward the abdomen even without a change in weight, which is another reason to look at more than one measurement over time.
My BMI says overweight, but I strength train regularly. Should I be concerned?
Not necessarily. Because BMI cannot separate muscle from fat, an athletic woman with significant muscle mass can land in the 'overweight' category despite low body fat. If this sounds like you, the body fat percentage chart and how your clothes fit are more useful signals than the BMI category alone.
Where can I check my actual body fat percentage instead of estimating it?
This tool does not calculate body fat percentage directly, since that requires a measurement method such as skinfold calipers, bioelectrical impedance scales, or a DEXA scan. The chart below your BMI result shows the ranges those methods typically report for women, so you know what to compare your number against.
Does my body frame size change the healthy weight range?
This calculator follows the standard BMI-based healthy range, which does not adjust for frame size, wrist measurement, or bone structure. Two women of the same height can have very different frames, so treat the healthy range shown here as a general guide rather than an exact target.
Is BMI a reliable measure of health on its own?
BMI is a useful, fast screening number, but it was never designed to be a complete health check. It says nothing about blood pressure, cholesterol, blood sugar, fitness level, or where fat is stored on the body. Use it as one data point among several, and bring the full picture to a doctor if you have specific health concerns.

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The BMI Calculator for Women is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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