Find your ideal body weight from four widely used medical formulas, plus the healthy BMI weight range for your height.
Each formula assigns a base weight at 5 feet (152.4 cm) of height and adds a fixed amount per additional inch, with different constants for men and women:
These were originally developed for calculating medication doses, not as fitness targets — which is why they disagree with each other by several kilograms. Treat them as reference points, not verdicts.
For most adults, the range of weights that keeps BMI between 18.5 and 24.9 is a more useful "ideal" than any single number. It acknowledges that healthy bodies come in a range: someone 5'10" (178 cm) is in the healthy range anywhere from about 129 to 174 lb (59-79 kg). Muscular people can sit above the BMI range and still be perfectly healthy — BMI cannot tell muscle from fat. For a body-composition view, try our body fat calculator, or check where you currently stand with the BMI calculator.
Common medical formulas (Devine, Robinson, Miller, Hamwi) start from a base weight at 5 feet tall and add a fixed amount per extra inch of height, with different values for men and women. This calculator shows all four plus the healthy BMI range.
A healthy weight keeps your BMI between 18.5 and 24.9. For someone 5'10" (178 cm) that is roughly 129-174 lb (59-79 kg). Frame size and muscle mass shift the ideal point within that range.
No single formula is definitive — they were designed for drug dosing, not fitness. The Robinson formula is often cited as the most balanced, but the healthy BMI range is the most useful guide for most people.
The formulas assume average build. If you carry significant muscle or have a larger frame, a healthy weight for you can be well above the formula values — body fat percentage and how you feel and perform matter more than one number.