ENERGY UNITS & CONVERSION TABLES
Energy units & conversion tables
Common units
Crude Oil and Natural Gas Liquids
| Abbreviation |
Description |
| bbl |
barrels |
| b/d |
barrels per day |
| m3 |
cubic metre |
| m3/d |
cubic metres per day |
| Mb/d |
thousands barrels per day |
| MMb |
million barrels |
| MMb/d |
million barrels per day |
Electricity
| Abbreviation |
Description |
| MW |
megawatt |
| kW.h |
kilowatt hour |
| MW.h |
megawatt hour |
| GW.h |
gigawatt hour |
| TW.h |
terawatt hour |
Natural Gas
| Abbreviation |
Description |
| Bcf |
billion cubic feet |
| Bcf/d |
billion cubic feet per day |
| Btu/cf |
British thermal units per cubic feet |
| cf |
cubic feet |
| m3 |
cubic metre |
| m3/d |
cubic metres per day |
| Mcf |
thousand cubic feet |
| MMBtu |
million British thermal units |
| MMcf |
million cubic feet |
| MMcf/d |
million cubic feet per day |
| Tcf |
trillion cubic feet |
Common conversions
| From |
To |
Multiply by |
|
metres (m)
|
feet
|
3.2808
|
|
kilometres (km)
|
miles
|
0.621
|
|
hectares (ha)
|
acres
|
2.471
|
|
kilograms (kg)
|
pounds
|
2.205
|
|
cubic metres (m3)
|
barrels (oil or natural gas liquids)
|
6.292
|
|
cubic metres (m3)
|
cubic feet of natural gas (@ 14.73 psia and 60oF)
|
35.301
|
|
litres (L)
|
US gallons
|
0.265
|
|
litres (L)
|
imperial gallons
|
0.220
|
|
imperial gallons
|
US gallons
|
1.201
|
|
barrels (bbl)
|
US gallons
|
42.0
|
|
barrels (bbl)
|
imperial gallons
|
34.972
|
|
metric tonnes (t)
|
pounds
|
2204.6
|
|
kilometers/litre
|
miles/gallon
|
2.825
|
|
gigajoules (GJ)
|
million British thermal units
|
0.95
|
Prefixes & Equivalents
| Prefixe |
|
Equivalent to |
| k |
(kilo) |
103 |
|
M
|
(mega)
|
106
|
|
G
|
(giga)
|
109
|
|
T
|
(tera)
|
1012
|
|
P
|
(peta)
|
1015
|
|
E
|
(exa)
|
1018
|
Energy content
Energy
| Unit |
Equivalent to |
|
gigajoule (GJ)
|
109 joules
0.95 million Btu
0.95 thousand cubic feet of natural gas at 1000 Btu/cf
0.165 barrels of oil
0.28 megawatt hour of electricity
|
Natural gas liquids
| Unit |
Equivalent to |
|
1 cubic metre (m3) (ethane)
|
18.36 GJ
|
|
1 cubic metre (m3) (propane)
|
25.53 GJ
|
|
1 cubic metre (m3) (butane)
|
28.62 GJ
|
Electricity
| Unit |
Equivalent to |
|
gigawatt hour (GW.h)
|
106 kW.h
3 600 GJ
0.0036 PJ
|
|
kilowatt hour (kW.h)
|
0.0036 GJ
|
|
megawatt hour (MW.h)
|
3.6 GJ
|
|
terawatt hour (TW.h)
|
109 kW.h
3.6 PJ
|
Crude oil
| Unit |
Equivalent to |
|
1 cubic metre (m3) (pentanes plus)
|
35.17 GJ
|
|
1 cubic metre (m3) (light)
|
38.51 GJ
|
|
1 cubic metre (m3) (heavy)
|
40.90 GJ
|
Natural gas
| Unit |
Equivalent to |
|
thousand cubic feet (Mcf)
|
1.05 GJ
|
|
million cubic feet (MMcf)
|
1.05 TJ
|
|
billion cubic feet (Bcf)
|
1.05 PJ
|
|
trillion cubic feet (Tcf)
|
1.05 EJ
|
Coal
| Unit |
Equivalent to |
|
1 tonne (t) (anthracite)
|
27.70 GJ
|
|
1 tonne (t) (bituminous)
|
27.60 GJ
|
|
1 tonne (t) (lignite)
|
14.40 GJ
|
|
1 tonne (t) (subbituminous)
|
18.80 GJ
|
Petroleum products
| Unit |
Equivalent to |
|
1 cubic metre (m3) (asphalt)
|
44.46 GJ
|
|
1 cubic metre (m3) (aviation gasoline)
|
33.52 GJ
|
|
1 cubic metre (m3) (aviation turbo fuel)
|
35.93 GJ
|
|
1 cubic metre (m3) (diesel)
|
38.68 GJ
|
|
1 cubic metre (m3) (heavy fuel oil)
|
41.73 GJ
|
|
1 cubic metre (m3) (kerosene)
|
37.68 GJ
|
|
1 cubic metre (m3) (light fuel oil)
|
38.68 GJ
|
|
1 cubic metre (m3) (lubes and greases)
|
39.16 GJ
|
|
1 cubic metre (m3) (motor gasoline)
|
34.66 GJ
|
|
1 cubic metre (m3) (naphtha specialties)
|
35.17 GJ
|
|
1 cubic metre (m3) (petrochemical feedstock)
|
34.17 GJ
|
|
1 cubic metre (m3) (petroleum coke)
|
42.38 GJ
|
|
1 cubic metre (m3) (still gas)
|
41.73 GJ
|
|
1 cubic metre (m3) (other products)
|
39.82 GJ
|
Other fuels
| Unit |
Equivalent to |
|
1 cubic metre (m3) (ethanol)
|
23.60 GJ
|
|
1 cubic metre (m3) (hydrogen)
|
0.012 GJ
|
|
1 cubic metre (m3) (methanol)
|
15.60 GJ
|