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

No, the NHLBI BMI calculator is designed for adult men and women and is not appropriate for pregnant individuals or children and adolescents.

Does the calculator provide a body fat percentage?

No, it only calculates BMI based on height and weight; it does not measure or estimate body fat percentage.

What should I do if my BMI falls in the overweight or obese range?

The page offers links to resources on maintaining a healthy weight, eating a heart-healthy diet, and increasing physical activity; you can also consult your healthcare provider for personalized guidance.

Can I switch between metric and standard units without re-entering my measurements?

Yes, the calculator has separate Standard and Metric modes; selecting the other unit system updates the display while preserving your height and weight inputs.

Body Metrics & FitnessTool Review

BMI Calculator for Women

Provided byNHLBI (National Heart, Lung, and Blood Institute)nhlbi.nih.gov

NHLBI provides a free BMI calculator with standard and metric modes. It gives a BMI result plus weight-status categor...

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Screenshot of BMI Calculator for Women on NHLBI (National Heart, Lung, and Blood Institute) — nhlbi.nih.govOpen the live tool →

About this tool

What BMI Calculator for Women does

The NHLBI BMI Calculator for Women determines an individual’s Body Mass Index using height and weight inputs, delivering a score that is interpreted through standard WHO-based categories. The result includes a weight-status label—Underweight, Healthy, Overweight, or Obesity—along with the corresponding numeric range. The interface provides separate modes for Standard (feet and inches, pounds) and Metric (centimeters, kilograms) units, allowing users to switch between measurement systems without re-entering data. Beyond the calculation, the page offers embedded health guidance: explanations of BMI categories, links to resources on heart-healthy eating, physical activity, and understanding health data, as well as information about eating disorders. This combination of a straightforward calculator and curated follow-up content distinguishes it from standalone BMI tools that stop at the score.

Step by step

How to use the NHLBI (National Heart, Lung, and Blood Institute) BMI Calculator for Women

1
Select Standard or Metric mode from the calculator options
2
Enter height using the foot and inch or centimeter selectors
3
Enter weight using the pound or kilogram input
4
Click Calculate to view the BMI score and weight-status category
5
Review the displayed BMI categories and links to health guidance

Is it right for you

Best for

Adult women who want a quick BMI assessment paired with credible follow-up resources on weight and heart health.

Limitations

BMI does not account for muscle mass, bone density, or body composition
The tool is intended for adults and may not be suitable for children or athletes
Results are estimates and should not replace professional medical advice

Questions

BMI Calculator for Women FAQ

Can I use this calculator if I am pregnant or under 18?: No, the NHLBI BMI calculator is designed for adult men and women and is not appropriate for pregnant individuals or children and adolescents.
Does the calculator provide a body fat percentage?: No, it only calculates BMI based on height and weight; it does not measure or estimate body fat percentage.
What should I do if my BMI falls in the overweight or obese range?: The page offers links to resources on maintaining a healthy weight, eating a heart-healthy diet, and increasing physical activity; you can also consult your healthcare provider for personalized guidance.
Can I switch between metric and standard units without re-entering my measurements?: Yes, the calculator has separate Standard and Metric modes; selecting the other unit system updates the display while preserving your height and weight inputs.

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