Ideal Body Weight Calculator

Follow these steps to calculate your ideal weight:

1. Select your biological gender (male or female).
2. Enter your total height in inches (multiply feet by 12 and add remaining inches, e.g., 5'8" = 68 inches).
3. Select your body frame size (small, medium, or large). See the FAQ section for how to determine your frame size.

The calculator will display ideal weight estimates from four different formulas, adjusted for your frame size, along with the healthy BMI weight range for your height.

An ideal body weight calculator estimates the weight that is generally considered healthiest for a person of a given height and gender. This calculator uses four well-established medical formulas (Devine, Robinson, Miller, and Hamwi) to provide a range of estimates, along with the healthy BMI weight range for your height.

Understanding your ideal weight can help set realistic health and fitness goals. However, it is important to remember that these are estimates based on population averages. Factors such as muscle mass, bone density, age, and body fat distribution all influence what constitutes a healthy weight for an individual.

Four formulas are used, with results adjusted for frame size (small: -10%, large: +10%):

• Devine (1974): Men: 50 + 2.3 × (height in inches - 60) kg. Women: 45.5 + 2.3 × (height in inches - 60) kg.
• Robinson (1983): Men: 52 + 1.9 × (height in inches - 60) kg. Women: 49 + 1.7 × (height in inches - 60) kg.
• Miller (1983): Men: 56.2 + 1.41 × (height in inches - 60) kg. Women: 53.1 + 1.36 × (height in inches - 60) kg.
• Hamwi (1964): Men: 48 + 2.7 × (height in inches - 60) kg. Women: 45.5 + 2.2 × (height in inches - 60) kg.

Healthy BMI range: height (m)² × 18.5 to height (m)² × 24.9, converted to pounds.

Example 1: A 5'10" (70 in) male with medium frame: Devine = 50 + 2.3(10) = 73 kg = 161 lbs. Robinson = 52 + 1.9(10) = 71 kg = 157 lbs. Healthy BMI range = 129 - 174 lbs.

Example 2: A 5'5" (65 in) female with small frame: Devine = (45.5 + 2.3(5)) × 0.9 = 51.2 kg = 113 lbs. Robinson = (49 + 1.7(5)) × 0.9 = 51.8 kg = 114 lbs.