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Enter your height and a target BMI to get the weight that matches it, the gap from your current weight, and the weight range for BMI 18.5 to 25.

📘 How to Use

  1. Enter your height in feet and inches, or switch to cm.
  2. Set your target BMI with the slider, the number box or the buttons (BMI 22.0, BMI 20.0, BMI 18.0).
  3. View the difference between your target weight and your current weight.

Reverse BMI Calculator

Unit system

ft
in
lbs

※ The healthy range and the underweight note use the CDC adult BMI categories (underweight below 18.5, healthy weight 18.5 to less than 25). They are for adults, and the result is not a diagnosis.

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Reverse BMI Calculator: Find Your Target Weight

"I want to have a BMI of 22." "How many kgs do I need to lose to reach BMI 20?" This tool calculates your ideal weight backwards from your desired BMI target.

💡 Why use Reverse BMI?

Regular BMI calculators tell you where you are. This tool tells you where you need to be. It helps you set concrete, number-based goals for your diet or fitness journey.

🎯 Common BMI Targets

  • BMI 22.0: Medically considered the healthiest weight with lowest disease risk.
  • BMI 20.0: Often cited as a "slender/fit" look.
  • BMI 18.0: Typically seen in fashion models. Note: Below 18.5 is considered underweight.

🛠️ How to Use

  1. Enter Height: Under "Unit system" at the top, "ft, in / lbs" is selected when the page opens; choose "cm / kg" to use metric units.
  2. Current Weight (Optional): Enter this to see the "Difference" (how much to lose/gain).
  3. Set Target BMI: Use the slider, the number box or the BMI buttons.
  4. See Result: The tool shows the weight required to hit that BMI.

⚠️ Health Note

Targeting a BMI below 18.5 (Underweight) can carry health risks. Always consult a professional before starting a significant weight loss program.

🧐 FAQ

Q. Where does the healthy weight range come from?

A. It is the weight that gives a BMI of 18.5 to less than 25, the "Healthy Weight" category in the CDC adult BMI categories. Enter your height and the tool shows that range for you.

Q. When does the underweight note appear?

A. It appears when your target BMI is below 18.5. The CDC classes an adult BMI below 18.5 as underweight.