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Convert between metric, imperial, and specialized length units
Enter a value and select units to convert
1 m = 3.28084 ft
1 km = 0.621371 mi
1 in = 2.54 cm
1 ft = 0.3048 m
1 mi = 1.60934 km
1 cm = 0.393701 in
Average adult height
175 cm → ft
American football field length
100 yd → m
Marathon race distance
26.2 mi → km
Laptop screen diagonal
15.6 in → cm
Typical room dimension
12 ft → m
Human hair diameter
100 μm → mm