Measure Converter

Did You Know?

The inch was originally based on the width of a man’s thumb—King Edward II of England standardized it in the 14th century as three barleycorns laid end-to-end!

Meanwhile, the centimeter (1/100th of a meter) became widely adopted after the French Revolution.

Fun fact: A standard US credit card is exactly 8.56 cm x 5.398 cm (3.37 in x 2.125 in).

Quick Reference

• 1 km = 1000 m
• 1 m = 100 cm
• 1 cm = 10 mm
• 1 mm = 1000 μm (micrometers)
• 1 μm = 1000 nm (nanometers)
• 1 in = 2.54 cm
• 1 ft = 12 in
• 1 yd = 3 ft
• 1 chain = 22 yd
• 1 rod (pole) = 5.5 yd
• 1 fathom = 6 ft
• 1 mi = 1760 yd
• 1 nmi (nautical mile) = 1852 m
• 1 league = 3 mi