Legal units of measure
1(m³)=1000(liter)= 1000（dm³)
British and American units of measure
1(ft)= 0.0283(m3)= 28.317(liter)
1(mcf)= 28.317(m3)
1(MMcf)=2.8317(m3)
10(bcf)= 2831.7(m3)