When converting pounds to kilograms, which conversion factor is used?

When converting pounds to kilograms, the conversion factor used is 2.2. This factor indicates that one pound is approximately equal to 0.454 kilograms. Therefore, to convert pounds to kilograms, you would divide the number of pounds by 2.2.

For example, if you have 10 pounds and want to convert it to kilograms, the calculation would be 10 pounds ÷ 2.2 = about 4.54 kilograms. Using these units accurately is crucial in pharmacology, as dosing, especially in medications involving weight, often requires precision in measurement.

The other conversion factors listed are not correct representations of the pound to kilogram ratio, and they would yield inaccurate results in clinical settings. Thus, using 2.2 as the conversion factor ensures that calculations adhere to the standard accepted in medical and scientific contexts.