Length & Distance
Convert inches, feet, miles, meters, kilometers and more
Length and distance conversions are among the most commonly searched calculations on the internet. Whether you are converting between the imperial system (inches, feet, miles) and the metric system (centimeters, meters, kilometers), or working within one system, having a reliable converter saves time and reduces errors in construction, travel, shipping, and everyday tasks.
All Length & Distance Tools
Inches ↔ Centimeters
Convert between inches and centimeters
Feet ↔ Meters
Convert between feet and meters
Feet ↔ Centimeters
Convert between feet and centimeters
Miles ↔ Kilometers
Convert between miles and kilometers
Kilometers ↔ Miles
Convert between kilometers and miles
Yards ↔ Meters
Convert between yards and meters
Yards ↔ Feet
Convert between yards and feet
Yards ↔ Miles
Convert between yards and miles
Millimeters ↔ Inches
Convert between millimeters and inches
Nautical Miles ↔ Miles
Convert between nautical miles and statute miles
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Millimeters to Inches: When Precision Matters
Learn precise millimeter-to-inch conversions for engineering, machining, woodworking, and technical applications.
Understanding Imperial vs Metric Length
The imperial system, used primarily in the United States, measures length in inches, feet, yards, and miles. The metric system, used by most of the world, uses millimeters, centimeters, meters, and kilometers. The two systems are linked by exact definitions: one inch is precisely 25.4 millimeters, and one mile is exactly 1,609.344 meters. These exact relationships make conversions straightforward once you know the right factor.
When You Need Length Conversions
Travelers converting road signs from kilometers to miles, online shoppers checking product dimensions listed in centimeters, architects working on international projects, and students solving physics problems all need reliable length conversions. Even DIY projects like hanging shelves or buying fabric require converting between units when following instructions from different countries.