Ideal Body Weight Calculator (IBW)
Calculate ideal body weight range using validated clinical medical formulas (Devine, Robinson, Miller, Hamwi).
- 100% free
- Private in browser
- No signup
- No watermarks
| Medical Formula | Ideal Weight (kg) | Ideal Weight (lbs) |
|---|---|---|
| Devine Formula (Standard Clinical) | 70.5 kg | 155.4 lbs |
| Robinson Formula (1983) | 68.9 kg | 151.9 lbs |
| Miller Formula (1983) | 68.7 kg | 151.5 lbs |
| Hamwi Formula (1964) | 72 kg | 158.7 lbs |
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About Ideal Body Weight Calculator (IBW)
Determine your healthy, ideal body weight based on scientific clinical equations including the Devine, Robinson, Miller, and Hamwi formulas, as well as the World Health Organization (WHO) BMI range.
How to use Ideal Body Weight Calculator (IBW)
- Select biological gender (Male / Female).
- Enter your height in centimeters (cm) or feet & inches.
- View the average ideal weight and healthy BMI weight range.
- Compare across the 4 medical formulas in the breakdown table.
Key features
- 4 validated clinical formulas: Devine, Robinson, Miller, and Hamwi
- Healthy WHO BMI weight range calculation (18.5 - 24.9)
- Supports both Metric (cm/kg) and Imperial (ft/in/lbs) units
- Instant average ideal weight calculation
Frequently asked questions
- What is the Devine Formula for ideal body weight?
- The Devine Formula is the standard clinical formula used by healthcare professionals. For men: 50 kg + 2.3 kg per inch over 5 feet; for women: 45.5 kg + 2.3 kg per inch over 5 feet.
- What do I need to enter?
- Just Biological Gender, Unit System, Height and Height. Every field has a sensible default you can start from.
- Is my data uploaded anywhere?
- No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
- Does it work on a phone?
- Yes. The layout adapts to small screens and needs no app or signup.
- Is Ideal Body Weight Calculator (IBW) free?
- Yes. Ideal Body Weight Calculator (IBW) on TheToolss is free to use with no signup required for the core workflow.
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