Calculate Body Mass Index (BMI) online

Do you need to lose weight? Online body mass calculator (obesity).

Body Mass Index (BMI) is a number calculated from a person's weight and height. BMI provides a reliable indicator of body fatness for most men and women between the ages of 18 and 65 years, and is used to screen for weight categories that may lead to health problems.

BMIClassification (World Health Organization)
< 20 Underweight
20 - 25 Normal (healthy weight)
25 - 30 Overweight
30 - 35 Obese Class I (Moderately obese)
35 - 40 Obese Class II (Severely obese)
> 40 Obese Class III (Very severely obese)

A healthy BMI score is between 20 and 25. A score below 20 indicates that you may be underweight; a value above 25 indicates that you may be overweight. Please remember, however, that this is only one of many possible ways to assess your weight. If you have any concerns about your weight, please discuss them with your physician, who is in a position, unlike this BMI calculator, to address your specific individual situation.


Link to this page: “BMI calculator”

You can link to this tool using this HTML code. Simply copy and paste it into your page:

<a href="https://dvps.manytools.org/handy/bmi-calculator/">Body Mass Index Tool - Online BMI Calculator (English/imperial or metric)</a>

If you have any problems using this Calculate Body Mass Index (BMI) online, please contact me.


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August 15, 2022

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Steganography tool fixed (server errors)

The past few weeks you may have seen a server error or two on the steganography tool. These intermittent errors were a byproduct of the recent server move and have now been fixed.

July 15, 2022

Phasing out hosting server after (almost) 10 years

After having been running steadily on the previous server for almost ten(!) years, it became time to retire that machine. So, ManyTools has now been moved to a shiny new hosting cluster. You may/should notice some speed improvements. In case you notice any problems or irregularities I'd be happy if you notify me so I can check on them.

September 27, 2017

Exit Coinhive (in-browser bitcoin mining)

Thank you for your feedback on our (brief) test with browser based bitcoin mining. This seemed like a nice way to support this website, but turned out to be far too much of a burden to our visitors. So we've decided to remove it. Our apologies for the inconvenience it has caused.

August 18, 2017

Migrated to HTTPS

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