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Calculate Ideal Body Weight Formula

Devine Formula:

\[ IBW (kg) = \begin{cases} 50 + 0.91 \times (height - 152.4) & \text{for males} \\ 45.5 + 0.91 \times (height - 152.4) & \text{for females} \end{cases} \]

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1. What is the Devine Formula?

The Devine formula is a method for estimating ideal body weight (IBW) based on height and gender. It was originally developed for medication dosing calculations and is commonly used in clinical settings to determine appropriate weight ranges for individuals.

2. How Does the Calculator Work?

The calculator uses the Devine formula:

\[ IBW (kg) = \begin{cases} 50 + 0.91 \times (height - 152.4) & \text{for males} \\ 45.5 + 0.91 \times (height - 152.4) & \text{for females} \end{cases} \]

Where:

Explanation: The formula calculates ideal body weight based on the assumption that for each additional centimeter over 5 feet (152.4 cm), an individual should add 0.91 kg to a base weight that differs by gender.

3. Importance of Ideal Body Weight Calculation

Details: Ideal body weight calculations are important for determining appropriate medication dosages, nutritional assessments, setting weight goals, and evaluating healthy weight ranges for individuals. It's particularly useful in clinical settings where weight-based dosing is critical.

4. Using the Calculator

Tips: Enter height in centimeters, select gender. Height must be a positive value. The calculator will provide the ideal body weight in kilograms based on the Devine formula.

5. Frequently Asked Questions (FAQ)

Q1: What is the Devine formula used for?
A: The Devine formula is primarily used for medication dosing calculations, nutritional assessment, and determining healthy weight ranges in clinical settings.

Q2: How accurate is the Devine formula?
A: While useful for general clinical purposes, the Devine formula provides an estimate and may not account for individual variations in body composition, bone structure, or muscle mass.

Q3: Are there limitations to this formula?
A: Yes, the formula doesn't account for age, body frame size, or muscle mass. It may be less accurate for very tall or very short individuals, athletes with high muscle mass, or elderly individuals with reduced muscle mass.

Q4: What's the difference between IBW and BMI?
A: IBW provides a single target weight based on height and gender, while BMI (Body Mass Index) is a ratio of weight to height squared that categorizes individuals into weight classes (underweight, normal, overweight, obese).

Q5: Should IBW be used for weight loss goals?
A: IBW can provide a general target, but individual factors like body composition, muscle mass, and personal health goals should be considered when setting weight management objectives.

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