71.2 MEASUREMENT CONVERSIONSLengthUnit cm m km in ft yd milecm 1 0.01 0.00001 0.3937 0.03281 0.01094 0.000006m 100 1 0.001 39.37 3.2808 1.0936 0.00062km 100000 1000 1 39370.7 3280.8 1093.6 0.62137in 2.54 0.0254 0.000025 1 0.08333 0.02777 0.000015ft 30.48 0.3048 0.000304 12 1 0.3333 0.000189yd 91.44 0.9144 0.000914 36 3 1 0.000568mile 160930 1609.3 1.6093 63360 5280 1760 11mm=0.1cm, 1m=0.001mmAreaUnit cm2 m2 km2 a ft2 yd 2 in 2cm2 1 0.0001 – 0.000001 0.001076 0.000012 0.155000m2 10000 1 0.000001 0.01 10.764 1.1958 1550.000km2 – 1000000 1 10000 1076400 1195800 –a 0.01 100 0.0001 1 1076.4 119.58 –ft2 – 0.092903 – 0.000929 1 0.1111 144.000yd 2 – 0.83613 – 0.008361 9 1 1296.00in 2 6.4516 0.000645 – – 0.006943 0.000771 11ha=100a, 1mile 2=259ha=2.59km 2VolumeUnit cm3 = cc m3 l in 3 ft3 yd 3cm3 = m l 1 0.000001 0.001 0.061024 0.000035 0.000001m3 1000000 1 1000 61024 35.315 1.30796l 1000 0.001 1 61.024 0.035315 0.001308in 3 16.387 0.000016 0.01638 1 0.000578 0.000021ft3 28316.8 0.028317 28.317 1728 1 0.03704yd 3 764529.8 0.76453 764.53 46656 27 11gal(US)=3785.41 cm3=231 in 3=0.83267gal(US)WeightUnit g kg t oz lbg 1 0.001 0.000001 0.03527 0.0022kg 1000 1 0.001 35.273 2.20459t 1000000 1000 1 35273 2204.59oz 28.3495 0.02835 0.000028 1 0.0625lb 453.592 0.45359 0.000454 16 11 tonne(metric)=1.1023 ton(US)=0.9842 ton(UK)