Standard Table
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Length Conversion Table

Use these tables to convert between common units of length.

Metric System

Unit Millimeters (mm) Common Usage
1 centimeter (cm) 10
1 meter (m) 1,000
1 kilometer (km) 1,000,000
1 nautical mile (nmi) 1,852,000

Imperial System

Unit Inches (in) Common Usage
1 foot (ft) 12
1 yard (yd) 36
1 mile (mi) 63,360

Imperial to Metric

Unit Millimeters (mm) Common Usage
1 inch (in) 25.4
1 foot (ft) 304.8
1 yard (yd) 914.4