Ideal Weight Calculator

Use this free ideal weight calculator to find the healthy weight range for your height and frame.
About Ideal Weight

Ideal body weight is the optimal weight associated with maximum life expectancy for a given height.

Different Formulas:

  • Devine Formula (1974): Based on height and gender, commonly used in medical settings
  • Robinson Formula (1983): A modification of the Devine formula
  • Miller Formula (1983): Developed based on data from insurance companies
  • Hamwi Formula (1964): Simple formula used for quick calculations

Healthy BMI Range:

BMI (Body Mass Index) between 18.5 and 24.9 is considered healthy for most adults. This range is associated with the lowest risk of chronic diseases.

Note: These formulas provide estimates only. Individual factors like body composition, age, and ethnicity can affect ideal weight. Consult with healthcare professionals for personalized advice.

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How our ideal weight calculator works

1

Enter height and sex

Type your height and select sex. Different formulas use different reference points, so multiple methods are useful for comparison.

2

We apply four common formulas

Devine, Robinson, Miller, and BMI-based range. The calculator shows all four so you can pick the most useful reference.

3

See your healthy weight range

Get the ideal weight for each formula plus a healthy BMI-based range (BMI 18.5-24.9 for your height).

Key things to know about our ideal weight calculator:

  • No formula is perfect: Ideal weight formulas dont account for muscle mass, frame size, body composition, or ethnicity. Treat the result as a reference, not a target.
  • Devine formula: Used for medication dosing: 50 kg + 2.3 kg per inch over 5 feet (men) or 45.5 kg + 2.3 kg per inch (women).
  • Healthy BMI range: For a 5 foot 10 inch (178 cm) adult, healthy BMI range is 129-174 lbs (58.5-79 kg). This is a more flexible target than any single formula.

For related calculations, try our BMI calculator.