An Ideal Weight Calculator helps estimate a healthy body weight range based on height, gender, and body frame size. It uses standard formulas like Robinson, Miller, Devine, and Hamwi to calculate the most suitable weight for maintaining good health.

Body frame size refers to the structure and density of your bones — generally categorized as small, medium, or large frame. It influences your overall body weight, as individuals with larger frames naturally have more bone mass and may weigh more even with similar height and body fat percentage.

You can estimate your body frame size using simple physical measurements or visual methods:

• 1. Wrist Measurement Method: Wrap your thumb and middle finger around your wrist just above the bone.
  • If your fingers overlap easily → Small frame
  • If your fingers just touch → Medium frame
  • If your fingers don’t touch → Large frame
• 2. Elbow Breadth Method: Measure the distance between the two bones on either side of your elbow while your arm is bent at 90°. Compare it with height-based reference charts to determine your frame size.
• 3. Visual Cues: Look at the width of your shoulders, wrists, and knees relative to your height — broader joints and shoulders usually indicate a larger frame.

Body frame size slightly adjusts your ideal weight range:

• Small frame: Subtract about 5% from your calculated ideal weight.
• Medium frame: Use the calculated weight as is.
• Large frame: Add about 5–10% to your calculated ideal weight.

These adjustments account for differences in bone density and structure.

All formulas — Robinson, Miller, Devine, and Hamwi — provide useful estimates. However, combining results from multiple formulas gives a more balanced and accurate range. The calculator averages results from all methods to display your ideal range.

No. BMI (Body Mass Index) measures body fat based on height and weight, while ideal weight estimates a healthy weight range considering height, gender, and frame size. Both are useful, but BMI is a broader indicator of health risks related to weight.

Yes, but results should be interpreted carefully. Athletes and muscular individuals often have higher weights due to muscle mass, not fat. In such cases, body fat percentage or BMI with frame adjustment provides a better measure of health.

Yes. As people age, metabolism and muscle mass tend to decrease, which can affect ideal weight. Older adults may have slightly higher body fat percentages even within a healthy weight range.

This calculator supports several standard formulas used in medical and fitness settings:

• Robinson Formula (1983): Provides modern estimates of ideal weight for men and women based on height.
• Miller Formula (1983): Offers a refined approach that slightly lowers ideal weight targets for both genders.
• Devine Formula (1974): Commonly used in clinical settings to calculate ideal body weight for medication dosing.
• Hamwi Formula (1964): One of the earliest and most popular formulas for estimating ideal weight based on height and gender.