TOOLFind a healthy weight for your height
Rather than a single "perfect" number, a healthy weight is a range. This calculator's headline figure comes from the healthy BMI band of 18.5 to 24.9 applied to your height — the range most health bodies use. Below it, four classic clinical formulas (Devine, Robinson, Miller and Hamwi) give single-point estimates for comparison.
How the formulas differ
All four use only your height and sex and were originally created for medication dosing, so they return slightly different results. They tend to cluster close together, which is why showing them side by side is useful. Your frame size, muscle mass and body composition all shift where within the range you'll feel and perform best.
This is a general estimate for educational purposes only and is not medical advice. A healthy weight varies with body composition, muscle mass and other factors. Consult a qualified healthcare professional for personal guidance.
A worked example
Take a man who is 5 ft 10 in (178 cm). The healthy BMI band of 18.5–24.9 puts his range at roughly 59–79 kg (130–174 lb) — a wide, realistic window. The classic formulas land inside it: Devine gives about 73 kg, Robinson about 71 kg, Miller about 70 kg and Hamwi about 75 kg. They cluster in the low-70s, near the middle of the healthy range, which is exactly how to read them — as reference points, not a single verdict.
Which number should you actually aim for?
The honest answer is: a point within the range that you can maintain and feel strong at. Two people of the same height can sit at different healthy weights because of frame size and muscle mass — a broad-shouldered, muscular build naturally carries more. That's why a single "ideal" figure can mislead, and why the range exists in the first place.
Rather than chase a formula's exact output, use it as a direction: check where you sit today with the BMI calculator, confirm how much of your weight is fat versus lean with the body fat calculator, and set the daily calories to move toward your target with the TDEE calculator.
Frequently asked questions
What is my ideal weight?
There is no single ideal weight. This tool shows a healthy weight range from the healthy BMI band (18.5 to 24.9) for your height, plus estimates from four classic formulas. Any weight within the range can be healthy depending on your build and muscle.
Which ideal weight formula is best?
The formulas by Devine, Robinson, Miller and Hamwi were designed decades ago mainly for medication dosing and give slightly different single figures. Treating the healthy BMI range as your target and the formulas as reference points is the most balanced approach.
Does ideal weight account for muscle?
No. These formulas use only height and sex, so a muscular or very lean person may sit outside the range and still be healthy. Combine the result with a body fat estimate for a fuller picture.