Ideal Weight Calculator
Compare four common ideal weight formulas in one place. Enter your height, gender, frame size, and current weight to see your estimated ideal range, healthy BMI weight range, and how close you are to the average estimate.
Ideal Weight Range
155.0 lbs - 165.3 lbs
Across Devine, Robinson, Miller, and Hamwi
Average Ideal Weight
159.4 lbs
Adjusted for your selected frame size
Current vs. Average
+10.6 lbs
Above the average ideal estimate
Formula breakdown
Each formula gives a slightly different target, which is why the calculator shows a range.
Devine
160.9 lbs
Robinson
156.5 lbs
Miller
155.0 lbs
Hamwi
165.3 lbs
Healthy BMI range
For your height, BMI 18.5 to 24.9 corresponds to this weight range.
128.9 lbs - 173.5 lbs
How to read this
- The four classic ideal-weight formulas were designed for screening and dosing guidance, not body composition analysis.
- Frame size shifts the estimate slightly lower or higher to give you a more realistic range.
- The BMI healthy range is a separate benchmark, so it may be wider than the formula-based range.
- Use these numbers as rough targets, not a diagnosis. Muscle mass, age, and health conditions can change what is ideal for you.
How to Use
- Choose your preferred height unit and enter your height.
- Select your gender and frame size to tailor the formula results.
- Add your current weight in pounds or kilograms to see how it compares with the formula average.
- Review the formula-by-formula breakdown, overall ideal range, healthy BMI range, and visual scale.
Frequently Asked Questions
What is an ideal weight calculator?
An ideal weight calculator estimates a target body weight based on your height and sex using established formulas. Our calculator compares several methods so you can see a range instead of relying on one single number.
Which ideal weight formula is most accurate?
No single formula is perfect for everyone. Devine, Robinson, Miller, and Hamwi were created for clinical estimation, and each produces slightly different results. Showing all four together gives you a more useful practical range.
Why does frame size matter?
People with smaller or larger frames often feel healthier at slightly different weights even at the same height. The frame-size adjustment nudges the estimate down or up to reflect that difference.
How is ideal weight different from BMI?
Ideal weight formulas give a target estimate based on height and sex, while BMI compares your weight with your height and places you in broad categories. They are related, but they are not the same measurement.
Should I use ideal weight as a medical goal?
Use it as a rough guideline, not a diagnosis or strict prescription. Muscle mass, age, body composition, and medical history all matter, so talk with a healthcare professional if you need personalized advice.