Reverse Bmi Calculator
Calculate the required weight to achieve a target BMI given a fixed height, or calculate the required height to achieve a target BMI given a fixed weight.
Published by:
isCalculator Editorial Team
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How to use this tool?
Reverse BMI Calculator helps you find the missing value (weight or height) needed to achieve a specific BMI.
How to Use:
- Enter your known value – either Height (in cm) or Weight (in kg).
- Set your Target BMI – a number between 10 and 50 (e.g., 22.5 for a healthy range).
- Choose what to calculate – select either:
- Required Weight from Height (if you know your height)
- Required Height from Weight (if you know your weight)
- Click "Calculate" – the result shows the exact weight (kg) or height (cm) needed to reach your target BMI.
⚠️ All inputs must be in metric units (cm and kg). The calculator uses the standard BMI formula: BMI = weight (kg) / (height in meters)².
Previous Results
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Frequently Asked Questions
A reverse BMI calculator helps you find the weight required to achieve a specific BMI if you know your height, or the height required if you know your weight.
A healthy BMI is typically between 18.5 and 24.9. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is obese.
BMI for children and teens is interpreted differently using percentiles. This calculator is intended for adults.
