International

The tables below provide for conversion from/to metric and imperial and US measurement systems.

Length

Metric

Imperial

1 millimetre [mm] 0.0394 in
1 centimetre [cm] 10 mm 0.3937 in
1 metre [m] 100 cm 1.0936 yd
1 kilometre [km] 1000 m 0.6214 mile

Imperial

Metric

1 inch [in] 2.54 cm
1 foot [ft] 12 in 0.3048 m
1 yard [yd] 3 ft 0.9144 m
1 mile 1760 yd 1.6093 km
1 int nautical mile 1.852 km

 

Area

Metric

Imperial

1 sq cm [cm2] 100 mm2 0.1550 in2
1 sq m [m2] 10,000 cm2 1.1960 yd2
1 hectare [ha] 10,000 m2 0.3861 mile2
1 sq km [km2] 100 ha 0.6214 mile

Imperial

Metric

1 sq inch [in2] 6.4516 cm2 2.54 cm
1 sq foot [ft2] 144 in 2 0.0929 m2
1 sq yd [yd2] 9 ft2 0.8361 m2
1 acre 4840 yd2 4046.9 m2
1 sq mile [mile2] 640 acres 2.59 km2