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 Conversions
  • Approximate Energy Content
  • 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)
    35.3147 Cubic feet (cf) natural gas
    (@ 14.73 psia and 60° F)
    1.0 Cubic feet (cf) natural gas
    (@ 14.73 psia and 60° F)
    0.028317 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 Cubic feet natural gas per day (cf/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) 0.0373 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)

    Disclaimer: The conversion factors provided on the NEB website are for general information only and the NEB makes no warranties for their use in particular purposes, including commercial agreements. You must not use this information as an alternative to advice from an appropriately qualified professional.

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