Metric and Imperial Conversion Guide

Metric, US customary, and imperial units overlap in everyday life, but they are not interchangeable. The safest approach is to identify the source system first, convert with the correct rule, and label the result clearly.

Distance

Kilometers and miles are common in travel, fitness, and maps. Keep extra digits during calculation and round only the final displayed result.

Weight

Kilograms and pounds are often used for shipping and body weight. Confirm carrier rounding rules when cost or compliance depends on the value.

Volume

A US gallon is not the same as an imperial gallon. Always check which gallon standard appears in the source material.