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Length Converter

Convert between different units of length including metric, imperial, and astronomical units. Choose a unit below to explore all available conversions.

MetricMetric System Units
International System of Units (SI) used worldwide
Metre
Symbol: m
Kilometre
Symbol: km
Decimetre
Symbol: dm
Centimetre
Symbol: cm
Millimetre
Symbol: mm
Nanometre
Symbol: nm
Picometre
Symbol: pm
ImperialImperial System Units
Traditional units primarily used in the United States
Inch
Symbol: in
Foot
Symbol: ft
Yard
Symbol: yd
Mile
Symbol: mi
Hand
Symbol: h

Popular Conversions

metric
Millimetres to Centimetres
mm → cm
Metric ⇄ Imperial
Centimetres to Inches
cm → in
Metric ⇄ Imperial
Feet to Metres
ft → m
Metric ⇄ Imperial
Inches to Centimetres
in → cm
Metric ⇄ Imperial
Metres to Feet
m → ft
Metric ⇄ Imperial
Kilometres to Miles
km → mi