Ideal Weight Calculator - Claculate Ideal Weight
The Ideal Weight Calculator computes ideal body weight (IBW) ranges based on height, gender, and age. The idea of finding the IBW using a formula has been sought after by many experts for a long time.
How to Use the Ideal Weight Calculator
The ideal weight calculator is a user-friendly tool crafted to evaluate whether your current weight aligns with the ideal range based on your gender and height. To make the most of this calculator, follow these steps:
- Choose Unit System: Before entering any values, select your preferred units of measurement (metric or imperial). This choice will affect how the calculator interprets your inputs.
- Select Gender: Indicate the preferred gender for calculation.
- Input Age: Enter your current age.
- Enter Height: Input your height in your chosen unit. Ensure it falls within the specified range of at least 153 cm (5 ft) and 2.72 m (8.9 ft) for accurate calculations.
View Results: After inputting the necessary information, the tool will compute your ideal weight values using various formulas.
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. For example, if you are a 5’10” male estimating your ideal weight with the Devine formula, you would add (2.3 × 10) kg to 50 kg to get 73 kg, or ~161 lbs.
The formulas differ in the values used based on the research of the scientists involved in their development, and their findings. The Devine formula is the most widely used formula for the measurement of IBW.
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. Over time, the formula became a universal determinant of IBW.
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.
Limitations of our IBW calculator
Remember that the values found with our ideal body weight calculator are not one hundred percent valid for all. As long as you are in the BMI normal weight range, you are fine – don’t go on a strict diet just to reach that specific number!
Also, our IBW calculator is valid for adults only. Don’t use it to find the proper weight range of kids – consult a specialist instead. Also, don’t use it if you are pregnant.
What is the Ideal Body Weight for an Individual?
In general, IBW is not a definitive factor for determining an individual’s health status. BMI (body mass index) is a more precise indicator that is utilized in a medical context for the diagnosis of health-related conditions. However, some general charts provide a range of weight in relation to height for both sexes.
Ideal Body Weight Calculator Female:
Sex based women IBW formulas include Divine, Broca, Lorentz, and Miller formulas with adjustments specific for females. For women with an average height of 160 cm, the IBW is 47.2 – 57.6 kg
Ideal Male Body Weight Calculator:
The same Sex based formulas, Divine, Broca, Lorentz, and Miller , are used with constants adjusted for males, providing an accurate calculation based on height.For men with an average height of 160 cm, the IBW is 50.8 – 60.1 kg
Ideal body weight calculator by age
For adults, ideal body weight and body mass index formulas are based on height and gender, but not age. However, in pediatrics, ideal weight calculations consider age, with specific formulas for different stages.
Pediatric ideal body weight calculator
Ideal body weight calculator for infant < 12 months: Weight (kg) = (age in months + 9/2)
Ideal body weight calculator for pediatric and children: aged 1-5 years: Weight (kg) = 2 x (age in years + 5)
Ideal body weight calculator for children aged 5-14 years: Weight (kg) = 4 x age in years.
IBW for adult patients with anorexia nervosa
The ideal body weight calculator for anorexia is defined as having a body weight less than 85% of the ideal body weight, or a BMI of 17.5 or lower.
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