Approximate Conversion Factors for Energy Units - Statistical Review of World Energy, Study notes of Physics

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Approximate conversion factors

Statistical Review of World Energy

Crude oil* To convert

Tonnes (metric) Kilolitres Barrels US gallons Tonnes/year From Multiply by

Tonnes (metric) 1 1.165 7.33 307.86 –

Kilolitres 0.8581 1 6.2898 264.17 –

Barrels 0.1364 0.159 1 42 –

US gallons 0.00325 0.0038 0.0238 1 –

Barrels/day – – – – 49.

*Based on the worldwide average gravity

Products To convert

Barrels to tonnes

Tonnes to barrels

Kilolitres to tonnes

Tonnes to kilolitres

Tonnes to gigajoules

Tonnes to barrels oil equivalent

From Multiply by

Ethane 0.059 16.850 0.373 2.679 49.400 8.

Liquified petroleum gas (LPG) 0.086 11.600 0.541 1.849 46.150 7.

Gasoline 0.120 8.350 0.753 1.328 44.750 7.

Kerosene 0.127 7.880 0.798 1.253 43.920 7.

Gas oil/diesel 0.134 7.460 0.843 1.186 43.380 7.

Residual fuel oil 0.157 6.350 0.991 1.010 41.570 6.

Product basket 0.124 8.058 0.781 1.281 43.076 7.

Units

1 exajoule (EJ) = 1 quintillion joules (1 x 10^18 )

1 British thermal unit (Btu) = 0.252 kcal = 1.055 kJ

1 tonne of oil equivalent (toe) = 39.683 million Btu = 41.868 million kJ

1 barrel of oil equivalent (boe) = 5.8 million Btu = 6.119 million kJ

1 kilowatt–hour (kWh) = 860 kcal = 3412 Btu = 3600 kJ

Calorific equivalents

One exajoule equals approximately

Heat units • 239 trillion kilocalories

• 948 trillion Btu

Solid fuels (^) • 40 million tonnes of hard coal

• 95 million tonnes of lignite and sub-bituminous coal

Gaseous fuels (^) • See natural gas and LNG table

Electricity • 278 terawatt–hours

All fuel energy content is net or lower heating

value (i.e., net of heat of vaporisation of water

generated from combustion)

Thermal equivalent efficiency factors used to convert non-

fossil electricity to primary energy

1 barrel of ethanol = 0.58 barrels of oil of oil equivalent Year Efficiency factor (%)

Year Efficiency factor (%)

1 barrel of biodiesel = 0.86 barrels of oil of equivalent 1965 - 2000 36.0 2011 38.

1 tonne of ethanol = 0. 68 tonne of oil equivalent 2001 36.2 2012 38.

1 tonne of biodiesel = 0.88 tonne of oil of equivalent (^2002) 36.5 2013 39.

Other terms 2004 36.9 2015 39.

Tonnes = metric equivalent of tons 2005 37.2 2016 39.