About Length & Distance Conversion
Length measures the distance between two points along a line. Modern science and trade rely on the International System of Units (SI) meter as the fundamental standard, while the Imperial and US Customary systems use feet, inches, yards, and miles.
Metric System
Millimeters (mm), Centimeters (cm), Meters (m), and Kilometers (km) based on decimal multiples of 10.
Imperial / US Customary
Inches (in), Feet (ft = 12 in), Yards (yd = 3 ft), and Statute Miles (mi = 5,280 ft).
Frequently Asked Questions
How many inches are in a meter?
There are approximately 39.3701 inches in 1 meter (1 m ≈ 39.37 in).
How do I convert kilometers to miles?
Multiply the number of kilometers by 0.621371 to get miles.