| Term | Conventions | Term | Conventions |
| Barrel | bbl | Cubic feet | cf |
| Thousand barrels | Mb | Thousand cubic feet | Mcf |
| Million barrels | MMb | Million cubic feet | MMcf |
| Barrels per day | b/d | Billion cubic feet | Bcf |
| Thousand barrels per day | Mb/d | Trillion cubic feet | Tcf |
| Metric ton | tonne | Cubic feet per day | cfd |
| Thousand tonnes | Mt | Million cubic feet per day | MMcfd |
| Million tonnes | MMt | Billion cubic feet per day | Bcfd |
| Tonnes per day | t/d | British Thermal Unit | Btu |
| Tonnes per year | t/y, tpa | Watt | W |
| Thousand tonnes per year | Mt/y | Kilowatt | kW |
| Million tonnes per year | MMt/y | MegaWatt | MW |
| Tonnes of oil equivalent | toe | GigaWatt | GW |
| Thousand tonnes of oil equivalent | Mtoe | Watt-hour | Wh |
| Million tonnes of oil equivalent | MMtoe | kiloWatt-hour | kWh |
| MegaWatt-hour | MWh | ||
| GigaWatt-hour | GWh | ||