Ideal Weight Calculator – Estimate a Healthy Weight Range
Estimate your ideal body weight with several classic formulas.
About the Ideal Weight Calculator
What is the Ideal Weight Calculator?
An ideal weight calculator estimates a goal weight using the Devine, Hamwi, Robinson and Miller formulas.
Why use this calculator?
These classic formulas give a range of reference weights from the medical literature, useful as sanity checks for goal setting.
How to use it
- Choose your gender and enter your height.
- Optionally select your frame size.
- Read each formula result and the average.
Formula
Each formula is a linear function of height above 5 ft (60 in).
Ideal weight is population-based. Individual goals should respect muscle, age and health status.
Frequently Asked Questions
How do I know my frame size?
Wrap thumb and middle finger around your opposite wrist. Overlapping means small frame, touching means medium, not touching means large.
Which formula is best?
No single one. The average across several is a reasonable working target.
Is this a medical diagnosis?
No. This tool provides general wellness information only. It is not a substitute for evaluation by a qualified healthcare professional.
Why do results differ from my doctor's measurements?
Clinical measurements use calibrated equipment and professional technique. Home estimates rely on formulas and self-reported values, so small differences are normal.
How often should I recalculate?
Recheck after meaningful changes such as weight gain or loss, a new workout routine, or every few months to track trends over time.
Do these formulas apply to everyone?
Most population formulas are less accurate for athletes, pregnant people, very young children and the elderly. Use them as a general guide.
Is this calculator free to use?
Yes. Every calculator on this site is completely free, with no hidden fees, no subscriptions and no limits on how many times you can use it.
How accurate are the results?
We use standard, widely accepted formulas and calculate in your browser using double-precision arithmetic. Results are rounded for readability, so treat them as reliable estimates rather than a guarantee. Real-world factors can vary the true figure.
Can I add this calculator to my own website?
Yes. Open this calculator page and use the "Add to your website" box in the sidebar to copy a ready-made iframe snippet, then paste it into any HTML page.
Does it work on a phone or tablet?
Yes. The layout is fully responsive, so it works on desktops, laptops, tablets and mobile phones, and every input adapts to touch screens.