A metre is a unit of length in the metric system, which is widely used around the world. It is defined as the distance light travels in a vacuum in 1/299,792,458 seconds. The metre is the base unit for measuring length in the International System of Units (SI) and is commonly used in various fields, including science, engineering, and everyday life. In practical terms, a metre is slightly longer than a yard, with one metre equaling approximately 39.37 inches. It is often used to measure distances, heights, and lengths of objects, such as buildings, roads, and furniture. The metre is a fundamental measurement that helps standardize dimensions globally.