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Ideal Weight Calculator
Ideal Weight Calculator
How Much Should I Weigh?
Most everyone has at some point tried to lose weight, or at least known somebody who has. This is largely due to the perception of an "ideal" body weight, which is often based on what we see promoted through various media such as social media, TV, movies, magazines, etc. Although ideal body weight (IBW) today is sometimes based on perceived visual appeal, IBW was actually introduced to estimate dosages for medical use, and the formulas that calculate it are not at all related to how a person looks at a given weight.
Important Note
IBW is not a perfect measurement. It does not consider the percentages of body fat and muscle in a person's body. This means that it is possible for highly fit, healthy athletes to be considered overweight based on their IBW. This is why IBW should be considered with the perspective that it is an imperfect measure and not necessarily indicative of health.
Formulas for Finding the Ideal Weight
IBW formulas were developed mainly to facilitate drug dosage calculations. All of the formulas have the same format of a base weight given a height of 5 feet with a set weight increment added per inch over the height of 5 feet.
G. J. Hamwi Formula (1964)
| Male: | 48.0 kg + 2.7 kg per inch over 5 feet |
| Female: | 45.5 kg + 2.2 kg per inch over 5 feet |
Invented for medicinal dosage purposes.
B. J. Devine Formula (1974)
| Male: | 50.0 kg + 2.3 kg per inch over 5 feet |
| Female: | 45.5 kg + 2.3 kg per inch over 5 feet |
Similar to the Hamwi Formula, it was originally intended as a basis for medicinal dosages based on weight and height.
J. D. Robinson Formula (1983)
| Male: | 52 kg + 1.9 kg per inch over 5 feet |
| Female: | 49 kg + 1.7 kg per inch over 5 feet |
Modification of the Devine Formula.
D. R. Miller Formula (1983)
| Male: | 56.2 kg + 1.41 kg per inch over 5 feet |
| Female: | 53.1 kg + 1.36 kg per inch over 5 feet |
Modification of the Devine Formula.
Healthy BMI range
The World Health Organization's (WHO) recommended healthy BMI range is 18.5 - 25 for both males and females. Based on the BMI range, it is possible to find out a healthy weight for any given height.