Ideal Body Weight Calculator
Calculate your ideal body weight using four trusted medical formulas
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IBW Formula Reference
| Formula | Male | Female |
|---|---|---|
| Devine (1974) | 50 + 2.3 × (in > 60) | 45.5 + 2.3 × (in > 60) |
| Robinson (1983) | 52 + 1.9 × (in > 60) | 49 + 1.7 × (in > 60) |
| Miller (1983) | 56.2 + 1.41 × (in > 60) | 53.1 + 1.36 × (in > 60) |
| Hamwi (1964) | 48 + 2.7 × (in > 60) | 45.5 + 2.2 × (in > 60) |
All formulas calculate weight in kg. "in > 60" = inches of height over 5 feet (60 inches).
About This Tool
The Ideal Body Weight (IBW) Calculator estimates your target weight using four well-established medical formulas: Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964). Each formula uses your height and sex to compute an ideal weight, and this tool averages all four for a balanced estimate.
IBW is frequently used in healthcare for medication dosing, mechanical ventilation settings, and nutritional assessments. While useful as a reference point, IBW does not account for body composition, muscle mass, or frame size. For a more complete assessment, combine this with our Body Fat Percentage Calculator and Daily Calorie Needs Calculator.
Interested in your overall fitness level? Check out our Fitness Age Calculator to see how your health metrics compare to your chronological age. You can also explore other health tools in our Health tools collection.
All processing happens entirely in your browser — no personal health data is sent to any server.