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| Numeric Unit | Power of Ten | Prefix | Symbol |
| Thousend | 103 | kilo | K |
| million | 106 | mega | M |
| billion | 109 | giga | G |
| trillion | 1012 | tera | T |
Units of measure
| To convert | To | Multiply by |
| Kilogram | Pounds | 2.20462 |
| Litres | Gallon (U.S) | 0.2624 |
| Litres | Gallon (Imperial) | 0.21997 |
| Litres | Barrels (U.S) | 0.00629 |
| Gallon (U.S.) | Liters | 3.785 |
| Gallon (U.S.) | Gallon (Imperial) | 0.8321 |
| Btu | Joule | 1055 |
| Btu | kWh | 29.31 x 10-5 |
| kW | Btu/hr | 3413 |
| Nautical mile | Kilometer | 1.852 |
| Nautical mile | Statute Mile | 1.151 |
| Statute mile | Kilometer | 1.609 |
Density conversions
| Liqued Fuels | Kg | Litre |
| Residual Oil | 1 | 1.059 |
| Aviation gasoline | 1 | 1.415 |
| Jet fuel (naphta) | 1 | 1.314 |
| Kerosine | 1 | 1.260 |
Heat content (default factors)
| Energy carrier | Btu6/US gallon | Btu6/Imp. gallon | MJ/litre |
| Crude petroleum | 0.1381 | 0.1660 | 38.49 |
| Motor gasoline | 0.1250 | 0.1501 | 34.84 |
| Hydrogen | 0.1342 | 0.1630 | 37.41 |
| Diesel | 0.1387 | 0.1666 | 38.66 |
| Biodiesel | 0.1262 | 0.1517 | 35.18 |
| Methanol | 0.0646 | 0.0776 | 18.01 |
| Ethanol | 0.0846 | 0.1016 | 23.58 |
| Gasohol (1) | 0.1209 | 0.1452 | 33.70 |
| Aviation gasoline | 0.1202 | 0.1444 | 33.50 |
| Jet fuel (naphta) | 0.1275 | 0.1532 | 35.54 |
| Kerosine | 0.1350 | 0.1622 | 37.63 |
| Residual oil (2) | 0.1497 | 0.1799 | . |
| Liq. natural gas | 0.0908 | 0.1090 | 25.31 |
(1) Gasohol (10% ethanol + 90% gasoline)
(2) Bunker No 6 fuel oil
Source: Energy Protection Agency and own conversions. Based on higher (gross heating value)
Carbon content coefficients
| Energy carrier | Tg Carbon/Q8tu | kg Carbon/kwh | kg Carbon/MJ |
| Crude Petroleum | 22.33 | 0.0694 | 0.0193 |
| Motor Gasoline | 19.33 | 0.0660 | 0.0183 |
| Diesel | 19.95 | 0.0681 | 0.0189 |
| Aviation gasoline | 18.87 | 0.0644 | 0.0179 |
| Jet fuel (naphta) | 19.33 | 0.0660 | 0.0183 |
| Kerosine | 19.72 | 0.0673 | 0.0187 |
| Residual Oil | 21.49 | 0.0733 | 0.0204 |
| Liq. natural gas | 16.99 | 0.0580 | 0.0161 |
Average CO2 emission coefficients
| Energy carrier | kgCO2/kWh | kgCO2/MJ | kgCO2/litre |
| Crude Petroleum | 0.2518 | 0.0699 | 2.6922 |
| Motor Gasoline | 0.2394 | 0.0665 | 2.3170 |
| Diesel | 0.2471 | 0.0686 | 2.6534 |
| Aviation gasoline | 0.2337 | 0.0649 | 2.1750 |
| Jet fuel (naphta) | 0.2394 | 0.0665 | 2.3633 |
| Kerosine | 0.2442 | 0.0678 | 2.5528 |
| Residual Oil | 0.2662 | 0.0739 | 3.0849 |
| Liq. natural gas | 0.2115 | 0.0587 | 1.4868 |
C02 emissions from fossil fuel combustion = fuel combusted x carbon content coefficient x fraction oxidised x (44/12). The fraction oxidised taken into account is 0.99.
Source: Source: Energy Protection Agency and own conversions.