Reverse BMI Calculator (Weight for a Given BMI)
Enter a BMI value and height to see the corresponding weight, plus the full weight span of the WHO reference band.
This inverts the BMI formula — useful for understanding what the reference band spans at your height. The numbers are arithmetic, not recommendations: appropriate weight is individual and is a conversation for you and your clinician, not a formula.
Formula
For general information only — not medical advice, a diagnosis or a treatment plan. Consult a qualified healthcare professional before making health, diet, medication or exercise decisions.
Enter a BMI value and height to see the corresponding weight, plus the full weight span of the WHO reference band. The Reverse BMI Calculator (Weight for a Given BMI) is a free, private reverse bmi tool — every result computes instantly in your browser with no sign-up and no data upload.
About Reverse BMI Calculator (Weight for a Given BMI)
This inverts the BMI formula — useful for understanding what the reference band spans at your height. It applies weight = BMI × height² (m²). Use the Reverse BMI Calculator (Weight for a Given BMI) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Reverse BMI Calculator (Weight for a Given BMI)
- 1Enter your details in the Reverse BMI Calculator (Weight for a Given BMI) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Reverse BMI Calculator (Weight for a Given BMI)?
- ✓Instant reverse bmi result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (WHO Technical Report Series 854)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Reverse BMI Calculator (Weight for a Given BMI) work?+
This inverts the BMI formula — useful for understanding what the reference band spans at your height. The calculation uses the formula: weight = BMI × height² (m²). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Reverse BMI Calculator (Weight for a Given BMI) accurate, and what is it based on?+
The method is traceable to authoritative sources: WHO Technical Report Series 854. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Reverse BMI Calculator (Weight for a Given BMI) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general information only and is not medical advice. Always consult a qualified healthcare professional before making health decisions.
What can I use the Reverse BMI Calculator (Weight for a Given BMI) for?+
It's commonly used for reverse bmi, weight for bmi, bmi to weight. Enter a BMI value and height to see the corresponding weight, plus the full weight span of the WHO reference band.
Related Health tools
Adult BMI Calculator (WHO)
Body-mass index for adults with the WHO reference bands shown neutrally, plus the substituted formula step by step.
● LiveBMI Calculator (lb & inches)
US-style BMI from pounds and inches using the ×703 conversion, with CDC adult reference ranges.
● LiveBMI Calculator for Women
BMI with reference context written for women — what the index can and cannot say about female body composition.
● Live