British Thermal Unit (BTU) = energy released by igniting a wooden kitchen match

1 Dekatherm (Dth) = 1,000,000 BTUs; natural gas is bought/sold by Dth

1,000 cubic feet of natural gas (1 Mcf) = ~1 Dth energy, more or less

1 kilowatt hour (kWh) = 3,413 BTUs

1 Dth = 293 kWh

1 kilogram (kG) of hydrogen = 113,582 Btu

1 kG hydrogen = 34 kWh

1 Dth = 8.8 kG hydrogen

1 gasoline gallon equivalent (GGE) = 112,114 Btu

1 Dth = 8.9 GGE

1 diesel gallon equivalent (DGE) = 138,490 Btu

1 Dth = 7.2 DGE