Reverse BMI Calculator
Know your goal BMI but not the weight? Enter your height and target BMI to calculate exactly how much you need to weigh.
How reverse BMI works
Rearranges BMI formula: target weight(kg) = target-BMI × height(m)². Pounds/inches: target-BMI × height(in)² / 703. Useful for setting a weight goal from a specific BMI target.
Frequently asked questions
How accurate are the results?
Formulas used here are validated in population studies but cannot account for individual genetics, body composition, or medical conditions. Treat results as a starting point, not a medical diagnosis.
Should I consult a professional?
If you have specific health concerns, existing conditions, or are planning significant lifestyle changes, consult a qualified healthcare provider (doctor, dietitian, physiologist).
How often should I recalculate?
Recalculate when your weight changes more than 5%, activity level shifts significantly, or every 3-6 months for routine monitoring. Results are snapshots — your body changes daily.
About the Reverse BMI
Enter your height and target BMI to find your ideal goal weight. Works for both metric (cm/kg) and imperial (ft/lbs) units. The tool runs entirely in your browser, so nothing you enter is uploaded or stored.
How to use the Reverse BMI
- Custom BMI value — enter your custom bmi value.
- Height — enter your height.
- Target BMI — enter your target bmi.
Last updated
For general wellness information only, not medical advice — see our disclaimer.