Can I use this calculator if I am under 18 or pregnant?

No, the Harvard Health BMI calculator is intended for adult men and women only and does not account for age, growth stages, or pregnancy.

Does the calculator accept both metric and US units?

Yes, the tool allows you to enter height in feet and inches or centimeters, and weight in pounds or kilograms, switching between unit systems as needed.

What do the BMI categories mean?

The calculator labels results as Underweight (below 18.5), Normal (18.5–24.9), Overweight (25–29.9), or Obese (30 and above), based on World Health Organization standards.

Is the BMI result a diagnosis?

No, BMI is a screening tool that estimates weight status; it does not diagnose body fatness or health conditions and should be discussed with a healthcare provider.

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BMI Calculator for Women

Provided byHarvard Health Publishinghealth.harvard.edu

Harvard Health offers a free BMI calculator that estimates BMI from entered height and weight. It includes interpreta...

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About this tool

What BMI Calculator for Women does

The Harvard Health BMI Calculator estimates Body Mass Index from height and weight inputs, providing a score and placing it into standard WHO-based categories: Underweight, Normal, Overweight, and Obese. The result includes a brief note that a BMI above 25 suggests weight loss is a smart idea. Users receive an immediate numerical value and a textual interpretation without needing to consult external tables. The site also offers a separate BMI reference chart for those who prefer visual lookup by height and weight ranges.

Step by step

How to use the Harvard Health Publishing BMI Calculator for Women

1
Open the BMI Calculator page on health.harvard.edu
2
Enter your height using either feet and inches or centimeters
3
Enter your weight using either pounds or kilograms
4
Click the Submit button to calculate your BMI score
5
View the result, which displays your BMI number and category label

Is it right for you

Best for

Adults who want a quick, free BMI estimate without creating an account or downloading software, particularly those who prefer a site affiliated with a trusted health institution.

Limitations

BMI does not directly measure body fat percentage
The tool is designed for adults and may not apply to athletes or children
Results are estimates and should not replace professional medical assessment

Questions

BMI Calculator for Women FAQ

Can I use this calculator if I am under 18 or pregnant?: No, the Harvard Health BMI calculator is intended for adult men and women only and does not account for age, growth stages, or pregnancy.
Does the calculator accept both metric and US units?: Yes, the tool allows you to enter height in feet and inches or centimeters, and weight in pounds or kilograms, switching between unit systems as needed.
What do the BMI categories mean?: The calculator labels results as Underweight (below 18.5), Normal (18.5–24.9), Overweight (25–29.9), or Obese (30 and above), based on World Health Organization standards.
Is the BMI result a diagnosis?: No, BMI is a screening tool that estimates weight status; it does not diagnose body fatness or health conditions and should be discussed with a healthcare provider.

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