Ideal Weight Calculator
Find a healthy target weight for your height. This calculator shows your healthy weight range based on BMI, plus the ideal body weight from four well-known clinical formulas — Devine, Robinson, Miller, and Hamwi — so you can see a realistic target rather than a single arbitrary number.
Healthy weight range (BMI 18.5–24.9)
56.7 kg – 76.3 kg
How to Use
Choose metric or imperial units and your sex, then enter your height. The calculator instantly shows your healthy weight range (from a BMI of 18.5 to 24.9) and a table of ideal body weights from four standard formulas. Use the BMI range as your healthy zone and the formulas as reference points.
Why This Tool Is Useful
There's no single 'ideal' weight — even doctors use several formulas that give slightly different numbers. Showing the BMI-based healthy range alongside the classic formulas gives you a sensible target zone instead of one misleading figure. It's handy for setting a goal weight, checking whether you're in a healthy range, or estimating medication dosing references. Note: these are general estimates for informational purposes, not medical advice, and they don't account for muscle mass or body composition — consult a professional for personal guidance.
How Ideal Weight Is Calculated
Most ideal-weight formulas are based on a baseline weight for a person 5 feet (152 cm) tall, plus a fixed amount for every inch above that. They differ in the exact numbers, which is why this tool shows several:
- Devine (1974) — the most widely used, originally for medication dosing.
- Robinson (1983) — a refinement of Devine, usually slightly lower.
- Miller (1983) — another revision with smaller per-inch increments.
- Hamwi (1964) — an older formula, often used in nutrition.
The Healthy BMI Weight Range
Rather than a single number, health guidelines define a healthy weight as a range — a BMI between 18.5 and 24.9 for your height. This calculator shows that range as your headline result because it's the most clinically grounded way to judge a healthy weight.
Anything inside the range is generally considered healthy; where you aim within it is a personal choice based on your build and goals.
Healthy Weight by Height
The table below shows the healthy weight range (BMI 18.5–24.9) for common heights, as a quick reference.
The Limitation: Muscle vs Fat
Every formula here uses only your height and sex — none of them know your body composition. A muscular, lean person can weigh more than the 'ideal' figure and still be perfectly healthy, because muscle is denser than fat.
That's why ideal weight is best paired with a body-composition measure. Use our Body Fat Calculator to see how much of your weight is fat versus lean mass for a fuller picture.
Healthy Weight Range by Height (BMI 18.5–24.9)
| Height | Healthy weight range |
|---|---|
| 150 cm (4'11") | 41.6 – 56.0 kg (92 – 123 lb) |
| 160 cm (5'3") | 47.4 – 63.7 kg (104 – 140 lb) |
| 170 cm (5'7") | 53.5 – 72.0 kg (118 – 159 lb) |
| 180 cm (5'11") | 59.9 – 80.7 kg (132 – 178 lb) |
| 190 cm (6'3") | 66.8 – 89.9 kg (147 – 198 lb) |