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BMI Calculator for Women

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  • No signup

This BMI calculator for women estimates body mass index from height and weight using standard adult categories. Enter your measurements in kg/cm or lb/ft-in to see BMI, category, and healthy weight range—educational screening only.

Standard adult BMI categories use the same formula for women and men. Differences in body composition mean BMI alone may misclassify muscular or post-menopausal individuals.

Pregnancy requires different assessment tools—this calculator is for non-pregnant adults.

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Your data never leaves your computer.

How to use this tool

Choose units, enter height and weight, and calculate. Review BMI number and category; compare to the healthy range shown for your height.

Worked example

Example: 150 lb and 5 ft 5 in gives a BMI near 25.0—at the boundary between normal and overweight on standard adult charts.

When to use this

  • Routine self-screening between checkups.
  • Tracking trend over time with consistent measurement method.
  • Understanding healthy weight band for your height.

Common examples

  • 70 kg and 175 cm → BMI about 22.9 (normal adult screening range).
  • 180 lb and 5 ft 10 in → BMI about 25.8 (borderline overweight category for adults).
  • 65 kg and 160 cm → BMI about 25.4—useful when switching from imperial height inputs.
  • 62 kg, 168 cm → BMI about 22.0 for metric wellness screening context.
  • 200 lb, 5 ft 4 in → BMI about 34.3—compare with metric entry for same person.

What people search for

  • bmi calculator
  • body mass index calculator
  • bmi calculator kg cm
  • bmi calculator lbs feet
  • calculate bmi online

Common mistakes

  • Using BMI during pregnancy or postpartum recovery.
  • Expecting gender-specific formulas—the math is the same; interpretation may differ.
  • Replacing professional assessment with a single number.

Related long-tail tasks

  • healthy bmi range for my height
  • bmi chart for women by age
  • compare bmi to waist circumference

How it works

BMI is calculated as weight in kilograms divided by height in meters squared. US units are converted to metric before calculation. Classifications follow commonly used adult BMI ranges and are for general education only.

Limitations

BMI is a population-level screening metric, not a diagnosis. Athletes, children, and pregnant users need specialized measures.

Privacy and file handling

Your data is processed in your browser and is not uploaded to our server.

Accuracy & methodology

This section documents how the calculator works, what it leaves out, and when results were last reviewed. Figures are educational estimates—not professional advice—and are not labeled "current" unless tied to automatically updated reference data.

Formula source or methodology
BMI = weight (kg) ÷ height (m)². US units convert lb → kg and ft/in → meters before calculation. Classification uses WHO-style adult cut points: under 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obesity.
Jurisdiction
International (WHO adult categories)
Unit system
Metric (kg, cm) or US (lb, ft/in)
Rounding method
BMI rounds to one decimal place.
Assumptions
  • Adult height and weight snapshot
  • Standard BMI formula; not pediatric BMI-for-age
Known omissions
  • Not medical advice. Does not diagnose, treat, or replace clinical assessment.
  • Athletic/muscular builds, pregnancy, and ethnicity-specific ranges
  • Children and teens (use child growth tool instead)
  • Waist circumference or body composition
Test cases (automated)
  • 70 kg, 175 cm → BMI ≈ 22.9 (normal)
  • Invalid height or weight returns an error
Version & last verified

Logic version 1.0. Content and formulas last verified .

Important notice

This tool provides a general estimate for educational purposes and is not medical advice. Consult a qualified healthcare professional for personal guidance.

Related BMI Calculator guides

These pages use the same bmi calculator with guides tailored to specific search intents.

Frequently asked questions

Is BMI different for women?

The formula is identical. Some health programs note that women typically carry different fat distribution—BMI does not capture that detail.

Can I use this while pregnant?

No. Pregnancy weight gain follows different guidelines—ask your clinician for appropriate tracking.

What BMI is considered healthy for women?

For most adults, 18.5–24.9 is labeled normal on standard charts. Individual targets vary—consult a professional for personal goals.

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Related pages

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