Ideal Weight Calculator

Understanding Ideal Weight Calculations

Ideal weight calculations are based on well-known formulas developed by health and medical professionals to estimate an optimal weight range based on height and gender. Each formula offers a slightly different approach, with some tailored more for specific body types and others for general use.

1. Devine Formula

The Devine formula was originally designed to calculate the ideal body weight for medical purposes, especially for determining appropriate drug dosages. The formula is:

Male: Ideal Weight = 50 + (2.3 × (Height in inches - 60))
Female: Ideal Weight = 45.5 + (2.3 × (Height in inches - 60))

For example, a male who is 5'10" (70 inches) would have an ideal weight of: 50 + (2.3 × 10) = 73 kg.

2. Robinson Formula

The Robinson formula is an alternative method that offers a slight variation, often producing a slightly lower ideal weight. The formula is:

Male: Ideal Weight = 52 + (1.9 × (Height in inches - 60))
Female: Ideal Weight = 49 + (1.7 × (Height in inches - 60))

For example, a female who is 5'4" (64 inches) would have an ideal weight of: 49 + (1.7 × 4) = 55.8 kg.

3. Miller Formula

The Miller formula is another variation that provides an ideal weight based on a balanced approach, often resulting in a weight between Devine and Robinson. The formula is:

Male: Ideal Weight = 56.2 + (1.41 × (Height in inches - 60))
Female: Ideal Weight = 53.1 + (1.36 × (Height in inches - 60))

For instance, a male who is 6'0" (72 inches) would have an ideal weight of: 56.2 + (1.41 × 12) = 73.12 kg.

4. Hamwi Formula

The Hamwi formula, originally designed for clinical purposes, often results in a slightly higher weight range, particularly for those with larger frames. The formula is:

Male: Ideal Weight = 48.0 + (2.7 × (Height in inches - 60))
Female: Ideal Weight = 45.5 + (2.2 × (Height in inches - 60))

For example, a female who is 5'6" (66 inches) would have an ideal weight of: 45.5 + (2.2 × 6) = 58.7 kg.

5. Choosing the Right Formula

Each formula provides a slightly different ideal weight range. The choice of formula may depend on personal preference or specific health goals. For example, those seeking a lower ideal weight might prefer the Robinson formula, while those with a larger frame might find the Hamwi formula more suitable. Understanding the range of ideal weights provided by each method can help in setting realistic health and fitness goals.