Ideal Body Weight Calculator
Calculate your ideal body weight using four established medical formulas: Hamwi, Devine, Robinson, and Miller, plus healthy BMI range calculations.
Hamwi Formula (1964)
Men: 48.0 kg + 2.7 kg per inch over 5 feet
Women: 45.5 kg + 2.2 kg per inch over 5 feet
One of the earliest IBW formulas, still widely used in clinical practice
Devine Formula (1974)
Men: 50.0 kg + 2.3 kg per inch over 5 feet
Women: 45.5 kg + 2.3 kg per inch over 5 feet
Most commonly used formula in medical practice, especially for drug dosing
Robinson Formula (1983)
Men: 52.0 kg + 1.9 kg per inch over 5 feet
Women: 49.0 kg + 1.7 kg per inch over 5 feet
More recent formula that tends to give slightly higher weights
Miller Formula (1983)
Men: 56.2 kg + 1.41 kg per inch over 5 feet
Women: 53.1 kg + 1.36 kg per inch over 5 feet
Alternative modern formula with different base weights and increments
Individual Variation: These formulas provide estimates based on population averages. Actual ideal weight can vary significantly based on body composition, muscle mass, bone density, and other factors.
Medical Disclaimer: These calculations are for informational purposes only. Always consult with a healthcare professional for personalized health and weight management advice, especially if you have medical conditions or concerns about your weight.
Understanding IBW:
- • Medical Use: IBW is primarily used for medication dosing and clinical assessments
- • Limitations: Does not account for muscle mass, bone density, or body composition
- • Age Considerations: These formulas are designed for adults; children have different requirements
- • Health Focus: Focus on overall health and fitness rather than just weight numbers