Ideal Weight Calculator
Calculate your ideal body weight based on 4 medical formulas. Includes healthy BMI range and personalized results for men and women.
What is Ideal Body Weight (IBW)?
Ideal Body Weight (IBW) is a mathematical estimate used by medical professionals to determine a healthy target weight based on height and biological sex. Originally developed in 1974 by J.D. Devine to assist with medical dosages, these formulas have become standard tools for individuals seeking a baseline for their fitness goals.
The History of Ideal Weight Formulas
Several formulas exist because different researchers sought to improve accuracy over time. The Devine formula is the clinical standard, but the Robinson (1983) and Miller (1983) formulas were developed to provide slightly different adjustments for men and women.
2025 Health Standards and BMI
In 2025, the medical community increasingly pairs IBW formulas with BMI (Body Mass Index) and waist-to-height ratios. While IBW gives you a specific number, the Healthy BMI Range (18.5 - 24.9) provides a more flexible spectrum.
Frequently asked questions
How much should I weigh for my height and age?
While age is not a variable in the standard Devine or Robinson formulas, it does play a role in body composition. Most medical guidelines focus on the Healthy BMI Range (18.5 to 24.9) for adults of any age.
What is the ideal weight for a 5'4 woman?
Using the Devine formula, the ideal weight for a 5'4 woman is approximately 120.6 lbs.
What is the ideal weight for a 5'10 man?
According to the Devine formula, a 5'10 man has an ideal weight of roughly 160.9 lbs.
Which ideal weight formula is most accurate?
The Devine formula is the most widely used in medical settings for drug dosing. However, none of these formulas account for body fat percentage.
How does frame size affect ideal weight?
Frame size refers to your bone structure. People with larger frames often have a higher ideal weight within the healthy BMI range compared to those with smaller frames.
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