Ideal Weight Calculator
Find your ideal body weight based on your height and gender. This calculator uses the well-known Devine and Robinson formulas, plus the healthy BMI range for your height.
Formula reviewed for accuracy. Our methodology & sources
Ideal Weight Calculator
health calculator
How It Works
The calculator starts from a baseline weight for a five-foot frame and adds a fixed amount for every inch of height above that, using both the Devine and Robinson formulas so you can compare two established estimates. Alongside them it shows the full healthy weight range derived from a normal BMI for your height. These formulas are based on height alone, so the result is best treated as a target range rather than a precise goal — muscle mass and build matter too.
Formula
Devine (men): 50 kg + 2.3 kg per inch over 5 ft Devine (women): 45.5 kg + 2.3 kg per inch over 5 ft
Examples
Male, 175 cm
Ideal weight around 70 kg.
Frequently Asked Questions
What is ideal body weight?
Ideal body weight (IBW) is an estimate of a healthy weight based primarily on height. Several formulas exist; they give a useful target range rather than a single exact number.
Is ideal weight the same for everyone of the same height?
No. These formulas don't account for muscle mass, frame size, or age. Use the result as a general guide alongside BMI and body fat percentage.
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