Table 4­1. Average Energy Conversion Factors
	U.S. Customary Unit	Metric Equivalent
Crude oil	1 barrel	0.1364 metric tons
Coal	1 short ton	0.9072 metric tons
Natural gas	1 cubic foot	0.0283 cubic meters
Natural gas plant liquids	1 barrel	0.0862 metric tons
Btu/joule	1 Btu	1,055.1 joules
Petroleum products
Motor gasoline	1 barrel	0.1172 metric tons
Distillate fuel oil	1 barrel	0.1340 metric tons
Residual fuel oil	1 barrel	0.1502 metric tons
Source: Energy Information Administration, Annual Energy Review 1995, DOE/EIA­0384(95) (Washington, DC, July 1996), Appendix B.