Ideal Weight Calculator
Find your ideal body weight using established medical formulas. This calculator uses multiple methods including the Devine, Robinson, Miller, and Hamwi formulas to give you a healthy weight range based on your height and gender.
Reviewed by the SparkCalc editorial team · May 2026
How We Calculate This
Uses four established formulas: Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964). Each calculates ideal weight based on height above 5 feet. The result is an average of all formulas.
Methodology last reviewed: May 2026. How SparkCalc works
Frequently Asked Questions
Which ideal weight formula is most accurate?
No single formula is definitively most accurate. The Devine formula is most commonly used in medicine, while Robinson is considered more realistic. We average multiple formulas for a balanced estimate.
Why do ideal weight formulas differ by gender?
Men and women have different body compositions. Men typically have more muscle mass and denser bones, leading to higher ideal weights for the same height.
Should I aim for my exact ideal weight?
Ideal weight is a guideline, not a strict target. A healthy BMI range (18.5-24.9) accounts for natural variation. Focus on overall health, fitness, and how you feel rather than hitting an exact number.
Does ideal weight account for body frame size?
These formulas provide estimates for medium frame sizes. If you have a small or large frame, your ideal weight may be 10% lower or higher respectively.
Related Calculators
You might also find these calculators helpful: BMI Calculator, and Body Fat Calculator.
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This calculator provides estimates for educational purposes only. Results vary based on individual factors. Consult a healthcare professional for personalized advice.