What is 1 inch converted to millimeters?

The correct conversion from inches to millimeters is based on the standard conversion factor, where 1 inch is equal to 25.4 millimeters. This conversion is widely used in various fields including engineering, manufacturing, and surveying, as millimeters provide a more precise measurement than inches, especially when dealing with small distances.

In everyday practice, this conversion is essential for ensuring accuracy when interpreting measurements or working with specifications that require different units. The value of 25.4 mm ensures that the relationship between the two units of measurement remains consistent across calculations.

Understanding this conversion is a fundamental skill for technicians and professionals who need to translate measurements between the imperial and metric systems frequently, making option B the accurate and relevant choice.