⚖️
Ideal Body Weight Calculator
Estimate ideal weight using the Devine formula
Body Composition
cm
What This Calculator Measures
The Ideal Body Weight (IBW) calculator estimates a healthy reference weight based on your height and sex using the Devine formula. Originally developed in 1974 for pharmaceutical dosing calculations, it has since been widely adopted as a general health reference.
How It Works
The Devine formula:
•**Male:** IBW = 50 + 2.3 x (height in inches - 60)
•**Female:** IBW = 45.5 + 2.3 x (height in inches - 60)
The result represents a midpoint estimate. A healthy weight range is typically considered to be within ±10% of the ideal value.
| Height (cm) | Male IBW (kg) | Female IBW (kg) |
|---|---|---|
| 165 | 62.1 | 57.6 |
| 170 | 66.6 | 62.1 |
| 175 | 71.1 | 66.6 |
| 180 | 75.6 | 71.1 |
| 185 | 80.1 | 75.6 |
Context for Lifters
For resistance-trained individuals, the Devine formula significantly underestimates a healthy weight because it does not account for muscle mass. A well-muscled 180 cm male might weigh 90+ kg while being lean and healthy, well above the formula's 75.6 kg estimate.
Limitations
•Does not account for body composition, frame size, or muscle mass.
•Most useful as a general reference for untrained, average-build populations.
•Lifters and athletes should use body fat percentage and FFMI as more meaningful targets instead.