Ideal Weight Calculator

Ideal body weight formulas give a single target weight for a given height and sex. Doctors first used them for medicine doses; today they are a rough guide to a sensible weight.

Sex
Height in
Results update as you type.

Ideal weight

65.2–66.7 kg

average 65.9 kg across four formulas

Devine formula
65.9 kg
Robinson formula
65.2 kg
Miller formula
66 kg
Hamwi formula
66.7 kg
Healthy range for Indians (BMI 18.5–22.9)
53.5–66.2 kg

Ideal weight formulas are rough guides; the BMI-based healthy range is wider and more widely used.

About this calculator

Because the four best-known formulas give slightly different answers, the calculator shows all of them, plus the healthy range from BMI using Indian cut-offs, which is wider and better suited to everyday use.

How to use it

  1. Choose your sex.
  2. Enter your height.
  3. Compare the formulas with the healthy range.

The formula

Devine: men 50 kg + 2.3 kg per inch over 5 ft; women 45.5 kg + 2.3 kg per inch
Robinson
men 52 + 1.9, women 49 + 1.7 per inch
Miller
men 56.2 + 1.41, women 53.1 + 1.36 per inch
Hamwi
men 48 + 2.7, women 45.5 + 2.2 per inch

Worked example

A man 170 cm tall

  1. 170 cm is 66.9 inches, 6.9 inches over 5 feet.
  2. Formulas give 65.2 kg (Robinson) to 66.7 kg (Hamwi); Devine gives 65.9 kg.
  3. The healthy BMI range for Indians at this height is 53.5 to 66.2 kg.

What the result means

Use the BMI-based range as the main guide; any weight inside it is healthy for most adults. The formulas sit near its top for men.

Assumptions

  • Adult height.

Limitations

  • Formulas ignore frame size and muscle; athletes may weigh more and be healthy.
  • They were designed for heights above 5 feet.

Frequently asked questions

What is the ideal weight for my height?

Any weight within the healthy BMI range is fine for most adults. The formulas here give a single figure near the middle-to-top of that range.

Why do the formulas differ?

They were built from different data sets and purposes. The spread shows how rough any single target is.

Is ideal weight different for Indians?

The formulas are the same, but Indian BMI guidelines use a lower upper limit (22.9), so the healthy range ends lower.

Not medical advice. This calculator is a general screening tool and cannot diagnose any condition. Results are estimates. Please talk to a doctor or a qualified health professional about your health and before making changes to diet, exercise or treatment.

Last reviewed on 1 October 2026. Found a mistake? Tell us.