Ideal Weight Calculator

Find a healthy weight target for your height.

Quick answer: For a man who is 170 cm tall, the Devine formula gives an ideal weight of about 65.9 kg, and the healthy BMI range (18.5 to 22.9) is 53.5 to 66.2 kg. The Devine formula is 50 kg for men (45.5 kg for women) plus 2.3 kg for every inch over 5 feet.
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Not medical advice. This calculator gives a general estimate. It cannot diagnose or treat any condition. Please speak to a qualified doctor about your health.

“Ideal weight” formulas give a reference value for your height. They were designed for drug dosing, not as a health target, so treat the result as one data point.

Methods shown

  • Devine formula: 50 kg (men) or 45.5 kg (women) plus 2.3 kg for every inch above 5 feet.
  • Healthy BMI range: the weights that give a BMI of 18.5–22.9, the normal range for Asians.

Last reviewed 7 November 2026. The formula and assumptions are shown above, and results are estimates, not advice.

Frequently asked questions

Is ideal weight the same as healthy weight?

Not exactly. Healthy weight is a range, and body composition matters as much as the number.

Do these formulas work for short or tall people?

They become less reliable at the extremes of height.

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