Understanding Miles
A brief history of the mile as a unit of measurement
The mile is one of the most widely recognized units of distance, yet its origins stretch back thousands of years to ancient Rome.
The Roman Mile
The word "mile" comes from the Latin mille passus, meaning "a thousand paces." A Roman pace was measured as two steps, roughly five feet each, making the Roman mile approximately 5,000 feet. Roman soldiers would mark every thousandth pace on their long marches, creating one of the earliest standardized distance measurements.
Standardization in England
Over the centuries, the mile varied in length across different regions. It wasn't until 1593 that the English Parliament standardized the statute mile at 5,280 feet — the value we still use today. This particular length was chosen to align with the furlong, an agricultural unit equal to 660 feet. Eight furlongs made one mile.
Miles Around the World
While most countries have adopted the metric system and use kilometers, the mile remains the standard unit of distance in the United States, the United Kingdom (for road distances), and a handful of other nations. The nautical mile, used in aviation and maritime navigation, is a separate unit based on the Earth's circumference and equals approximately 1.151 statute miles.
Converting Miles
Whether you're planning a road trip or converting workout distances, understanding miles and their relationship to other units is practical everyday knowledge. Use our conversion tools to quickly translate between miles and kilometers, meters, feet, and more.