How to Use the Ideal Weight Calculator

Step 1: Enter Your Age

• Input your current age in years
• Age range: 18-100 years
• Age is used for personalized recommendations

Step 2: Select Your Gender

• Choose Male or Female
• Different formulas are used for each gender
• Gender affects ideal weight calculations

Step 3: Enter Your Height

• Choose your preferred unit: Centimeters (cm), Inches (in), or Feet (ft)
• Enter your height in the selected unit
• For feet, use decimal format (e.g., 5.7 for 5'7")

Step 4: View Results

The calculator will automatically display:

• Average Ideal Weight: Mean of all formulas
• Individual Formula Results: Devine, Robinson, Miller, and Hamwi
• Healthy Weight Range: Based on BMI 18.5-24.9
• Personalized Interpretation: Age-specific recommendations

Understanding the Results

Medical Formulas

• Devine Formula (1974): Most widely used in medical settings for drug dosing
• Robinson Formula (1983): Updated version of Devine with adjusted coefficients
• Miller Formula (1983): Alternative modern approach with different baseline
• Hamwi Formula (1964): Classic clinical formula still used today

Healthy Weight Range

Based on BMI (Body Mass Index) between 18.5 and 24.9, which is associated with lowest health risks for most people.

Using Your Results

• Use the average as a general target
• Consider the healthy weight range as your optimal zone
• Individual formulas may vary - this is normal
• Muscle mass, frame size, and body composition matter more than the number

Tips for Best Results

Accurate Measurements

• Measure height without shoes in the morning
• Stand straight against a wall for best accuracy
• Use consistent units throughout

Interpreting Your Ideal Weight

• These are guidelines, not absolute targets
• Athletic individuals may weigh more due to muscle
• Older adults may benefit from slightly higher weights
• Consider body composition, not just weight

Setting Realistic Goals

• Aim for gradual, sustainable changes
• Focus on healthy habits, not just numbers
• Combine healthy eating with regular exercise
• Track trends over time, not daily fluctuations

Common Use Cases

Health Assessment

1. Compare current weight to ideal range
2. Identify if weight change is recommended
3. Set realistic weight goals

Fitness Planning

1. Determine target weight for training
2. Track progress toward ideal range
3. Adjust nutrition and exercise plans

Medical Reference

1. Understand weight recommendations from doctors
2. Calculate medication dosing weights
3. Assess health risk factors