Ideal Weight Calculator

Estimate a healthy weight range using multiple formulas.

This ideal weight calculator uses well-known formulas (Devine, Hamwi, Robinson, and Miller) to estimate a reference range based on height and sex.

How to Use the Ideal Weight Calculator

Select your sex
Enter your height (US or metric)
Choose how you want results displayed (lb or kg)
Click Calculate Ideal Weight

You’ll see:

Individual results from each formula
A min–max range across all methods

What Is an Ideal Weight?

“Ideal weight” is a general estimate of a body weight that’s often referenced in health and medical settings. It’s not a diagnosis and not a one-size-fits-all goal.

Different formulas use different assumptions, which is why this calculator shows multiple methods side by side instead of a single number.

Why This Calculator Shows Multiple Formulas

There isn’t one universal “ideal weight” formula. Each method was created for slightly different use cases:

Devine Formula – commonly used in clinical settings
Hamwi Formula – often referenced in older medical guidelines
Robinson Formula – a modified version with narrower adjustments
Miller Formula – tends to estimate slightly higher weights

Seeing all four helps provide context instead of a single rigid target.

Understanding Your Results

Your results show:

Each formula’s estimate
A combined range representing the lowest and highest estimates

This range is meant to be a reference, not a rule. Many healthy people fall outside these numbers due to factors like:

Muscle mass
Body composition
Age
Activity level

Ideal Weight vs BMI

Ideal weight formulas and BMI both use height, but they measure different things.

Ideal weight gives a reference number or range
BMI classifies weight relative to height

For a fuller picture, many people use both.

👉 Calculate Your BMI

How to Use This Information

This calculator can be helpful for:

Setting long-term weight goals
Understanding common medical reference ranges
Comparing estimates across formulas

It’s best used alongside other tools like BMI, TDEE, and maintenance calculators.

Next Steps

If you’re planning changes based on your results:

To understand calorie needs → TDEE Calculator
To plan weight loss → Calorie Deficit Calculator
To stabilize before a new phase → Maintenance Reset Calculator

FAQ

Is ideal weight the same for everyone?
No. Ideal weight formulas are general estimates and don’t account for body composition or individual health factors.

Which formula is the most accurate?
There isn’t one “best” formula. That’s why this calculator shows several.

Should I aim to hit the exact number?
These numbers are references, not strict targets.

Can I be healthy outside this range?
Yes. Many people are healthy at weights above or below these estimates.

Disclaimer

This ideal weight calculator is for informational purposes only and does not provide medical advice. For personalized guidance, consult a qualified healthcare professional.