Ideal Weight Calculator

Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formulas. Free online tool.

Enter your height

How It Works

  1. Enter your sex and height.
  2. The calculator uses the Devine formula to estimate your ideal body weight (IBW).
  3. A healthy BMI range (18.5-24.9) is used to calculate the recommended weight range.
  4. Results are displayed in both kilograms and pounds.
  5. Use these numbers as a general guideline - individual factors always apply.

Formula

Men (Devine):   IBW = 50 kg + 2.3 kg per inch over 5 feet
Women (Devine): IBW = 45.5 kg + 2.3 kg per inch over 5 feet
Healthy range: weight = BMI x height(m)^2, where BMI = 18.5 to 24.9

Example

Input: Male | Height: 180 cm (5 ft 11 in)
Result: Ideal weight (Devine): 75.3 kg Healthy weight range: 59.9 - 80.7 kg

FAQ

It uses the Devine formula as the primary estimate and the healthy BMI range (18.5-24.9) to show the recommended weight interval for your height.

Not necessarily. Ideal weight is a mathematical estimate; healthy weight also depends on body composition, age, and individual health factors.

No. All calculations run entirely in your browser. No data is ever sent to a server.

Use it as a general guideline only. For personalised weight goals, consult a qualified healthcare professional.