Ideal Weight Calculator – Find Your Healthy Weight Range

Ideal weight varies by height, gender, and frame size. For a 5'7" (170 cm) male with medium frame, ideal weight is roughly 67–74 kg across the four standard formulas. Use the calculator above for your specific measurements.

The Devine formula (1974) is most widely used in clinical settings, especially for medication dosing. However, no single formula is universally accurate — a range across all four formulas gives a more realistic target.

Ideal weight is calculated from height and gender using established medical formulas. For example, Devine for males: 50 kg + 2.3 kg per inch over 5 feet. Frame size adjusts the result by ±10%.

Not exactly. Ideal weight from formulas is a statistical estimate. Healthy weight is typically defined as BMI 18.5–24.9. Neither fully accounts for muscle mass, bone density, or body composition.

For a 5'6" male with medium frame, ideal weight is approximately 62–68 kg. For a 5'6" female with medium frame, it is approximately 58–63 kg. These shift by ±10% for small or large frames.

Classic ideal weight formulas are based on height and gender only — age is not a factor. However, body composition changes with age, and older adults may benefit from maintaining slightly higher weight to preserve muscle mass.

Frame size reflects your skeletal structure, estimated by wrist circumference. Small frame: wrist under 16 cm (men) / 14 cm (women). Large frame: wrist over 19 cm (men) / 17 cm (women). Frame size adjusts ideal weight by ±10%.

BMI is calculated from your current height and weight to classify weight status. Ideal weight formulas estimate a target weight based on height alone. BMI tells you where you are; ideal weight tells you where to aim.