Reverse BMI Calculator

Find Your Ideal Weight Based on Your Target BMI

💡 The Reverse BMI Calculator helps you find your ideal weight based on your target BMI and height. Perfect for setting weight goals for health, fitness, or medical reasons, it gives you a clear number to aim for

  • Set Your Target – Discover the weight needed to reach your desired BMI.
  • Plan Ahead – See how much weight to lose or gain.
  • Accurate & Easy – Powered by standard BMI formulas.

Take control of your health with a clear plan! Whether you’re aiming to lose, gain, or maintain weight, this tool helps you create a strategy tailored to your goals. Get the clarity you need to stay on track and succeed!

Reverse BMI Calculator - Target Weight Based on Desired BMI

Units
Healthy BMI range: 18.5 - 24.9

Target Weight (Metric)

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Target Weight (Imperial)

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Weight Change Needed

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Reverse BMI to Weight Calculator

💡The Reverse BMI Calculator helps you determine the ideal weight for a given BMI and height. Whether you’re setting a weight goal for health, fitness, or medical reasons, this tool provides a clear target based on the BMI value you want to achieve.

  • Set a Clear Goal – Find the weight you need to reach your desired BMI.
  • Plan Your Journey – Understand how much weight you need to lose or gain.
  • Works for Any BMI – Useful for weight loss, weight gain, or maintenance.
  • Simple and Accurate – Uses standard BMI formulas for precise results.

Take control of your health and set realistic weight goals! Whether you’re looking to gain, lose, or maintain weight, our Reverse BMI Calculator helps you understand the weight needed to achieve your desired BMI.

By knowing your target weight, you can develop a personalized plan that aligns with your health and fitness goals. Whether you’re working toward a healthier lifestyle, optimizing performance, or simply staying on track, this tool provides the clarity you need to succeed.

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About - Reverse BMI Calculator

The Reverse BMI Calculator helps you determine the ideal weight for a given BMI and height. Instead of calculating BMI from weight, this tool works in reverse—allowing you to set a target BMI and see what weight corresponds to it. This is useful for setting realistic weight goals and tracking progress toward a healthy range.

This calculator is ideal for:

  • Individuals setting weight goals – whether for weight loss, muscle gain, or general health.
  • Athletes and fitness enthusiasts tracking their weight in relation to body composition.
  • Medical and health professionals looking for a quick BMI-to-weight reference.
  • Anyone curious about what weight aligns with their desired BMI.

Use this tool to plan weight changes strategically based on BMI guidelines.

  • Select Units – Choose between Metric (kg, cm) or Imperial (lbs, inches).
  • Enter Your Target BMI – Input the BMI value you aim for.
  • Enter Your Height – Your height determines the weight required for that BMI.
  • See Your Target Weight – The result shows the exact weight that aligns with your BMI goal.

How the Calculation Works

For metric units:

  • BMI Constant = 1
  • Height is in meters (m)
  • Weight is in kilograms (kg)

For imperial units:

  • BMI Constant = 703
  • Height is in inches (in)
  • Weight is in pounds (lbs)

Example (Metric):
If your target BMI is 22 and your height is 1.7 meters (170 cm):
Target Weight = (22 × 1.7 × 1.7) / 1
= 63.58 kg

Example (Imperial):
If your target BMI is 22 and your height is 67 inches (5’7″):
Target Weight = (22 × 67 × 67) / 703
= 141 lbs

Target Weight – This is the weight you need to reach to match your target BMI.

  • Use this as a reference for weight management. Whether you need to lose or gain weight, knowing the exact number makes it easier to set goals.
  • Pair this with a TDEE calculator to determine the calorie intake needed to reach your goal weight.

Did you know? BMI was originally created in the 1830s by Adolphe Quetelet as a quick way to measure population health, but today it is widely used in fitness and medicine despite its limitations in distinguishing muscle from fat.

Top Questions - Reverse BMI Calculator

To reverse calculate BMI, use the formula:
Target Weight = (Target BMI × Height²) / BMI Constant.
The Reverse BMI Calculator simplifies this process by allowing you to enter your desired BMI and height to instantly see the weight needed to achieve that BMI.

The Reverse BMI Calculator is accurate for estimating weight based on BMI, but it does not account for muscle mass, bone density, or body fat percentage. For a complete assessment, consider using a body fat calculator or an FFMI (Fat-Free Mass Index) calculator alongside BMI.

BMI is a useful guideline for determining weight in relation to height, but it does not distinguish between muscle and fat. The Reverse BMI Calculator helps set weight goals based on BMI, but athletes and those with higher muscle mass may need additional body composition measurements.

No, the Reverse BMI Calculator is designed to calculate weight based on a given BMI and height. If you need to estimate height for a target BMI, a different formula would be required.

The Reverse BMI formula is:
Target Weight = (Target BMI × Height²) / BMI Constant.
For metric units, the BMI constant is 1, and for imperial units, it is 703. The Reverse BMI Calculator automates this calculation, making it quick and easy to use.

BMI is calculated using weight and height, so even a small change in weight can slightly adjust your BMI. The effect is more noticeable for shorter individuals, as the BMI formula is based on height squared. The Reverse BMI Calculator accounts for these variations when determining target weight.

The Reverse BMI Calculator provides accurate weight estimates based on the BMI formula, but it does not consider factors like muscle mass, bone density, or fat distribution. For a complete assessment, body fat percentage or FFMI calculations may be more reliable.

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