Energy Conversion Tables

The National Energy Board uses the International System of Units.

The tables below are intended to be a quick reference guide. For more precise conversions, please refer to the Energy Conversion Calculator.

Common Units

Crude Oil and Natural Gas Liquids

Abbreviation Description
b/d barrels per day
bbl barrels
cubic metre
m³/d cubic metres per day
Mb/d thousand barrels per day
MMb million barrels
MMb/d million barrels per day

Natural Gas

Abbreviation Description
Bcf billion cubic feet
Bcf/d billion cubic feet per day
Btu/cf British thermal units per cubic foot
cf cubic feet
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
t tonne (1000 kilograms)
equivalent to metric ton
MMt Million Metric tons
MMt/y Million Metric tons per year

Electricity

Abbreviation Description
MW megawatt
kW.h kilowatt hour
MW.h megawatt hour
GW.h gigawatt hour
TW.h terawatt hour

Prefixes and Equivalents

Prefixes Equivalent
k (kilo) 10³
M (mega) 10
G (giga) 10
T (tera) 10¹²
P (peta) 10¹⁵
E (exa) 10¹⁸

Common Conversions

Oil Density

Unit Equivalent to
Degrees API (141.5 / Sp. Gr.) – 131.5
Specific Gravity 141.5 / (131.5 + Degrees API)
Degrees API Specific Gravity
10 1
15 0.9659
20 0.934
25 0.9042
30 0.8762
35 0.8499
40 0.8251
45 0.8017
50 0.7796

Distance

Unit Equivalent to
1.0 Metres (m) 3.2808 Feet (ft)
1.0 Metres (m) 1 x 10⁻³ Kilometres (km)
1.0 Metres (m) 6.2137 x 10⁻⁴ Miles (mi)
1.0 Feet (ft) 0.3048 Metres (m)
1.0 Feet (ft) 3.048 x 10⁻⁴ Kilometres (km)
1.0 Feet (ft) 1.8939 x 10⁻⁴ Miles (mi)
1.0 Kilometres (km) 3,280.8399 Feet (ft)
1.0 Kilometres (km) 1,000 Metres (m)
1.0 Kilometres (km) 0.6214 Miles (mi)
1.0 Miles (mi) 5,280 Feet (ft)
1.0 Miles (mi) 1.6094 Kilometres (km)
1.0 Miles (mi) 1,609.344 Metres (m)

Area

Unit Equivalent to
1.0 Hectares 2.4711 Acres
1.0 Hectares 3.861 x 10⁻³ Square miles (sq mi)
1.0 Acres 0.4047 Hectares
1.0 Acres 1.5625 x 10⁻³ Square miles (sq mi)
1.0 Square miles (sq mi) 640 Acres
1.0 Square miles (sq mi) 258.9988 Hectares

Volume

Unit Equivalent to
1.0 Cubic metres (m³) 6.2898 Barrels (bbl)
1.0 Cubic metres (m³) 1,000 Litres (l)
1.0 Cubic metres (m³) 219.9692 Imperial gallons
1.0 Cubic metres (m³) 264.1721 US Gallons
1.0 Cubic metres (m³)
(@ 101.325 kPaa and 15° C)
35.301 Cubic feet (cf) natural gas
(@ 14.73 psia and 60° F)
1.0 Cubic feet (cf) natural gas
(@ 14.73 psia and 60° F)
0.0283 Cubic metres (m³)
(@ 101.325 kPaa and 15° C)
1.0 US Gallons 0.0238 Barrels (bbl)
1.0 US Gallons 0.8327 Imperial gallons
1.0 US Gallons 3.7854 Litres (l)
1.0 US Gallons 3.7854 x 10⁻³ Cubic metres (m³)
1.0 Litres (l) 0.22 Imperial gallons
1.0 Litres (l) 6.2898 x 10⁻³ Barrels (bbl)
1.0 Litres (l) 0.2642 US Gallons
1.0 Litres (l) 1 x 10⁻³ Cubic metres (m³)
1.0 Imperial gallons 4.5461 Litres (l)
1.0 Imperial gallons 0.0286 Barrels (bbl)
1.0 Imperial gallons 1.201 US Gallons
1.0 Imperial gallons 4.5461 x 10⁻³ Cubic metres (m³)
1.0 Barrels (bbl) 0.159 Cubic metres (m³)
1.0 Barrels (bbl) 158.9873 Litres (l)
1.0 Barrels (bbl) 34.9723 Imperial gallons
1.0 Barrels (bbl) 42 US Gallons

Weight & Mass

Unit Equivalent to
1.0 Kilograms (kg) 1 x 10⁻³ Tonnes (t)
1.0 Kilograms (kg) 2.2046 Pounds (lb)
1.0 Tonnes (t) 1,000 Kilograms (kg)
1.0 Tonnes (t) 2,204.6226 Pounds (lb)
1.0 Pounds (lb) 0.4536 Kilograms (kg)
1.0 Pounds (lb) 4.5359 x 10⁻⁴ Tonnes (t)

Vehicle Mileage

Unit Equivalent to
1.0 Kilometres/Litre (km/l) 2.3522 Miles/Gallon (mi/gal)
1.0 Miles/Gallon (mi/gal) 0.4252 Kilometres/Litre (km/l)

Energy Terms

Unit Equivalent to
1.0 Watts (w) 1 Joule (J) per second
1.0 Gigajoules (GJ) 1 x 10 Joules (J)
1.0 Gigajoules (GJ) 0.9478 Million British thermal units (MMBtu)
1.0 Gigajoules (GJ) 2.7778 x 10⁵ Watt-hours (W.h)
1.0 Gigajoules (GJ) 277.7778 Kilowatt-hours (kW.h)
1.0 Gigajoules (GJ) 0.2778 Megawatt-hours (MW.h)
1.0 Gigajoules (GJ) 2.7778 x 10⁻⁴ Gigawatt-hours (GW.h)
1.0 Gigajoules (GJ) 2.7778 x 10⁻⁷ Terawatt-hours (TW.h)
1.0 Gigajoules (GJ) 947.8171 Cubic feet (cf) natural gas
1.0 Gigajoules (GJ) 26.853 Cubic metres (m³) natural gas
1.0 Million British thermal units (MMBtu) 1.0551 x 10 Joules (J)
1.0 Million British thermal units (MMBtu) 1.0551 Gigajoules (GJ)
1.0 Million British thermal units (MMBtu) 2.9307 x 10⁵ Watt-hours (W.h)
1.0 Million British thermal units (MMBtu) 293.0711 Kilowatt-hours (kW.h)
1.0 Million British thermal units (MMBtu) 0.2931 Megawatt-hours (MW.h)
1.0 Million British thermal units (MMBtu) 2.9307 x 10⁻⁴ Gigawatt-hours (GW.h)
1.0 Million British thermal units (MMBtu) 2.9307 Terawatt-hours (TW.h)
1.0 Million British thermal units (MMBtu) 1,000 Cubic feet (cf) natural gas
1.0 Million British thermal units (MMBtu) 28.3278 Cubic metres (m³)
1.0 Watt-hours (W.h) 3,600 Joules (J)
1.0 Watt-hours (W.h) 3.6 x 10⁻ Gigajoules (GJ)
1.0 Watt-hours (W.h) 3.4121 x 10⁻ Million British thermal units (MMBtu)
1.0 Watt-hours (W.h) 1 x 10⁻³ Kilowatt-hours (kW.h)
1.0 Watt-hours (W.h) 1 x 10⁻ Megawatt-hours (MW.h)
1.0 Watt-hours (W.h) 1 x 10⁻ Gigawatt-hours (GW.h)
1.0 Watt-hours (W.h) 1 x 10⁻¹² Terawatt-hours (TW.h)
1.0 Kilowatt-hours (kW.h) 3.6 x 10 Joules (J)
1.0 Kilowatt-hours (kW.h) 3.6 x 10⁻³ Gigajoules (GJ)
1.0 Kilowatt-hours (kW.h) 3.4121 x 10⁻³ Million British thermal units (MMBtu)
1.0 Kilowatt-hours (kW.h) 1,000 Watt-hours (W.h)
1.0 Kilowatt-hours (kW.h) 1 x 10⁻³ Megawatt-hours (MW.h)
1.0 Kilowatt-hours (kW.h) 1 x 10⁻ Gigawatt-hours (GW.h)
1.0 Kilowatt-hours (kW.h) 1 x 10⁻ Terawatt-hours (TW.h)
1.0 Megawatt-hours (MW.h) 3.6 x 10 Joules (J)
1.0 Megawatt-hours (MW.h) 3.60 Gigajoules (GJ)
1.0 Megawatt-hours (MW.h) 3.4122 Million British thermal units (MMBtu)
1.0 Megawatt-hours (MW.h) 1 x 10 Watt-hours (W.h)
1.0 Megawatt-hours (MW.h) 1,000 Kilowatt-hours (kW.h)
1.0 Megawatt-hours (MW.h) 1 x 10⁻³ Gigawatt-hours (GW.h)
1.0 Megawatt-hours (MW.h) 1 x 10⁻ Terawatt-hours (TW.h)
1.0 Gigawatt-hours (GW.h) 3.6 x 10¹² Joules (J)
1.0 Gigawatt-hours (GW.h) 3,600 Gigajoules (GJ)
1.0 Gigawatt-hours (GW.h) 3,412.1416 Million British thermal units (MMBtu)
1.0 Gigawatt-hours (GW.h) 1 x 10 Watt-hours (W.h)
1.0 Gigawatt-hours (GW.h) 1 x 10 Kilowatt-hours (kW.h)
1.0 Gigawatt-hours (GW.h) 1,000 Megawatt-hours (MW.h)
1.0 Gigawatt-hours (GW.h) 1 x 10⁻³ Terawatt-hours (TW.h)
1.0 Terawatt-hours (TW.h) 3.6 x 10¹⁵ Joules (J)
1.0 Terawatt-hours (TW.h) 3.6 x 10 Gigajoules (GJ)
1.0 Terawatt-hours (TW.h) 3.4121 x 10 Million British thermal units (MMBtu)
1.0 Terawatt-hours (TW.h) 1 x 10¹² Watt-hours (W.h)
1.0 Terawatt-hours (TW.h) 1 x 10 Kilowatt-hours (kW.h)
1.0 Terawatt-hours (TW.h) 1 x 10 Megawatt-hours (MW.h)
1.0 Terawatt-hours (TW.h) 1,000 Gigawatt-hours (GW.h)
1.0 Cubic feet (cf) natural gas 1.0551 x 10⁻³ Gigajoules (GJ)
1.0 Cubic feet (cf) natural gas 1 x 10⁻³ Million British thermal units (MMBtu)
1.0 Cubic metres (m³) natural gas 0.0373 Gigajoules (GJ)
1.0 Cubic metres (m³) natural gas 0.0353 Million British thermal units (MMBtu)
1.0 Therms (thm) 1 x 10⁵ British thermal units (Btu)
1.0 Therms (thm) 0.10 Million British thermal units (MMBtu)
1.0 Dekatherms (dth) 10 Therms (thm)
1.0 Dekatherms (dth) 1 Million British thermal units (MMBtu)

Liquefied Natural Gas (LNG)

The values below are approximations only; values can vary with reference conditions and feed gas composition.

Unit Equivalent to
1.0 Cubic metres (m³) natural gas 35.301 Cubic feet (cf) natural gas
1.0 Cubic metres (m³) natural gas 1.7111 x 10⁻³ Cubic metres (m³) LNG
1.0 Cubic metres (m³) natural gas 7.2487 x 10⁻⁴ Tonnes (t) LNG
1.0 Cubic metres (m³) LNG 2.0631 x 10⁴ Cubic feet (cf) natural gas
1.0 Cubic metres (m³) LNG 584.431 Cubic metres (m³) natural gas
1.0 Cubic metres (m³) LNG 0.4049 Tonnes (t) LNG
1.0 Cubic metres (m³) LNG 2.0631 x 10⁻⁵ Billion cubic feet (Bcf) natural gas
1.0 Tonnes (t) LNG 1,379.549 Cubic metres (m³) natural gas
1.0 Tonnes (t) LNG 2.4697 Cubic metres (m³) LNG
1.0 Tonnes (t) LNG 4.8699 x 10⁴ Cubic feet (cf) natural gas
1.0 Cubic feet (cf) natural gas 2.0531 x 10⁻⁵ Tonnes (t) LNG
1.0 Tonnes LNG per year 133.4232 Million cubic feet natural gas per day (MMcf/d)
1.0 Million Tonnes LNG per year 0.1334 Billion cubic feet natural gas per day (Bcf/d)
1.0 Billion cubic feet (Bcf) natural gas 4.8471 x 10⁴ Cubic metres (m³) LNG
1.0 Billion cubic feet natural gas per day (Bcf/d) 7.495 Million tonnes LNG per year

Approximate Energy Content

Coal

Substance Unit Equivalent to
Anthracite 1.0 Tonnes (t) 27.70 Gigajoules (GJ)
Bituminous 1.0 Tonnes (t) 27.60 Gigajoules (GJ)
Lignite 1.0 Tonnes (t) 14.40 Gigajoules (GJ)
Subbituminous 1.0 Tonnes (t) 18.80 Gigajoules (GJ)

Crude Oil & Bitumen

Substance Unit Equivalent to
Pentanes plus 1.0 Cubic metres (m³) 35.17 Gigajoules (GJ)
Light 1.0 Cubic metres (m³) 38.51 Gigajoules (GJ)
Heavy 1.0 Cubic metres (m³) 40.90 Gigajoules (GJ)
Synthetic crude oil 1.0 Cubic metres (m³) 39.40 Gigajoules (GJ)
Bitumen 1.0 Cubic metres (m³) 42.80 Gigajoules (GJ)

Natural Gas

Unit Equivalent to
1.0 Cubic metres (m³) 37.24 Gigajoules (GJ)
(Based on 1000 Btu/cf)

Natural Gas Liquids (NGLs)

Substance Unit Equivalent to
Ethane 1.0 Cubic metres (m³) 18.36 Gigajoules (GJ)
Propane 1.0 Cubic metres (m³) 25.53 Gigajoules (GJ)
Butane 1.0 Cubic metres (m³) 28.62 Gigajoules (GJ)

Petroleum Products

Substance Unit Equivalent to
Asphalt 1.0 Cubic metres (m³) 44.46 Gigajoules (GJ)
Aviation gasoline 1.0 Cubic metres (m³) 33.52 Gigajoules (GJ)
Jet Fuel (Jet A-1) 1.0 Cubic metres (m³) 34.70 Gigajoules (GJ)
Diesel 1.0 Cubic metres (m³) 38.68 Gigajoules (GJ)
Heavy fuel oil 1.0 Cubic metres (m³) 41.73 Gigajoules (GJ)
Kerosene 1.0 Cubic metres (m³) 37.68 Gigajoules (GJ)
Heating Oil 1.0 Cubic metres (m³) 36.72 Gigajoules (GJ)
Lubes and greases 1.0 Cubic metres (m³) 39.16 Gigajoules (GJ)
Motor gasoline 1.0 Cubic metres (m³) 34.66 Gigajoules (GJ)
Naphtha specialties 1.0 Cubic metres (m³) 35.17 Gigajoules (GJ)
Petrochemical feedstock 1.0 Cubic metres (m³) 34.17 Gigajoules (GJ)
Petroleum coke 1.0 Cubic metres (m³) 42.38 Gigajoules (GJ)
Still gas 1.0 Cubic metres (m³) 41.73 Gigajoules (GJ)
Other products 1.0 Cubic metres (m³) 39.82 Gigajoules (GJ)

Other Fuels

Substance Unit Equivalent to
Ethanol 1.0 Cubic metres (m³) 23.60 Gigajoules (GJ)
Hydrogen (gas) 1.0 Cubic metres (m³) 0.012 Gigajoules (GJ)
Methanol 1.0 Cubic metres (m³) 15.60 Gigajoules (GJ)