1. What is an Ideal Weight Calculator?
Definition: This calculator estimates your ideal body weight based on your gender and height, using six different formulas: Robinson, Miller, Hamwi, Devine, Broca, and Lorentz. It provides a range of ideal weights to help guide health and fitness goals.
Purpose: It assists in setting weight targets for health, fitness, and medical purposes, offering a benchmark for maintaining a healthy body weight based on height and gender.
2. How Does the Calculator Work?
The calculator takes gender and height with selectable units and computes the ideal weight using all six formulas:
- For Men:
- Robinson: \( 52 + 1.9 \times (\text{height (in)} - 60) \).
- Miller: \( 56.2 + 1.41 \times (\text{height (in)} - 60) \).
- Hamwi: \( 48.0 + 2.7 \times (\text{height (in)} - 60) \).
- Devine: \( 50.0 + 2.3 \times (\text{height (in)} - 60) \).
- Broca: \( \text{height (cm)} - 100 \).
- Lorentz: \( (\text{height (cm)} - 100) - \frac{(\text{height (cm)} - 150)}{4} \).
- For Women:
- Robinson: \( 49 + 1.7 \times (\text{height (in)} - 60) \).
- Miller: \( 53.1 + 1.36 \times (\text{height (in)} - 60) \).
- Hamwi: \( 45.5 + 2.2 \times (\text{height (in)} - 60) \).
- Devine: \( 45.5 + 2.3 \times (\text{height (in)} - 60) \).
- Broca: \( \text{height (cm)} - 100 \).
- Lorentz: \( (\text{height (cm)} - 100) - \frac{(\text{height (cm)} - 150)}{2} \).
Unit Conversions:
- Height: cm, m, in, ft (e.g., 1 m = 100 cm = 39.3701 in).
- Weight: kg, lb, oz (e.g., 1 kg = 2.20462 lb).
Steps:
- Select your gender.
- Input your height with chosen units.
- Compute your ideal weight using all six formulas, displaying results with a selectable output unit (kg, lb, oz).
3. Importance of Ideal Weight Calculations
Calculating ideal weight is useful for:
- Health Goals: Provides a target weight range to maintain a healthy BMI and reduce risks of obesity-related conditions.
- Fitness Planning: Helps athletes and fitness enthusiasts set realistic weight targets based on their height.
- Medical Applications: Assists in nutritional assessments and medical dosing where weight is a factor.
4. Using the Calculator
Examples:
- Male: Height = 70 in (1.778 m)
Robinson: \( 52 + 1.9 \times (70 - 60) = 71.0000 \, \text{kg} \).
Miller: \( 56.2 + 1.41 \times (70 - 60) = 70.3000 \, \text{kg} \).
Hamwi: \( 48.0 + 2.7 \times (70 - 60) = 75.0000 \, \text{kg} \).
Devine: \( 50.0 + 2.3 \times (70 - 60) = 73.0000 \, \text{kg} \).
Broca: \( 177.8 - 100 = 77.8000 \, \text{kg} \).
Lorentz: \( (177.8 - 100) - \frac{(177.8 - 150)}{4} = 70.8500 \, \text{kg} \).
- Female: Height = 165 cm (64.96 in)
Robinson: \( 49 + 1.7 \times (64.96 - 60) \approx 57.4320 \, \text{kg} = 126.6187 \, \text{lb} \).
Miller: \( 53.1 + 1.36 \times (64.96 - 60) \approx 59.8456 \, \text{kg} \).
Hamwi: \( 45.5 + 2.2 \times (64.96 - 60) \approx 56.4120 \, \text{kg} \).
Devine: \( 45.5 + 2.3 \times (64.96 - 60) \approx 56.9080 \, \text{kg} \).
Broca: \( 165 - 100 = 65.0000 \, \text{kg} \).
Lorentz: \( (165 - 100) - \frac{(165 - 150)}{2} = 57.5000 \, \text{kg} \).
5. Frequently Asked Questions (FAQ)
Q: Why are there multiple formulas for ideal weight?
A: Different formulas account for variations in body composition and historical medical standards. For example, Hamwi is commonly used in clinical settings, while Broca is simpler and based solely on height.
Q: How do I choose the right ideal weight?
A: The results provide a range of ideal weights. Consider your body frame, activity level, and health goals, and consult a healthcare professional to determine the best target for you.
Q: Can ideal weight vary for the same height?
A: Yes, ideal weight varies by gender and formula due to differences in body composition and the assumptions each formula makes about healthy weight distribution.
Home
Back
