Conversion factors | About BP | BP Global

Conversion factors

The conversion factors cover calculation between weight, volume and calorific measures. They provide data for crude oil, products, natural gas, LNG, electricity and solid fuels

For more information, please see definitions and explanatory notes

Approximate conversion factors

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
-
-
-
-
49.8

*Based on the worldwide average gravity.

Products          
To convert:

barrels to tonnes



tonnes to barrels



kilolitres to tonnes



tonnes to kilolitres

From
-------------------  Multiply by  --------------------
LPG
0.086
11.6
0.542
1.844
Gasoline
0.118
8.5
0.740
1.351
Kerosene 0.128
7.8
0.806
1.240
Gas oli/diesel
0.133
7.5
0.839
1.192
Residual fuel oil 0.149
6.7
0.939
1.065
Product basket 0.125
8.0
0.786
1.272
Natural gas and LNG
To convert:

billion cubic metres NG



billion cubic feet NG


million tonnes oil equivalent


million tonnes LNG


trillion British thermal units


million barrels oil equivalent
From -------------------  Multiply by  --------------------
1 billion cubic metres NG 1 35.3 0.90 0.74 35.7 6.60
1 billion cubic feet NG
0.028 1 0.025 0.021 1.01 0.19
1 million tonnes oil equivalent
1.11 39.2 1 0.82 39.7 7.33
1 million tonnes LNG
1.36 48.0 1.22 1 48.6 8.97
1 trillion British thermal units
0.028 0.99 0.025 0.021 1 0.18
1 million barrels oil equivalent 0.15 5.35 0.14 0.11 5.41 1
Units

1 metric tonne = 2204.62 lb.
= 1.1023 short tons
1 kilolitre = 6.2898 barrels
1 kilolitre = 1 cubic metre
1 kilocalorie (kcal) = 4.187 kJ = 3.968 Btu
1 kilojoule (kJ) = 0.239 kcal = 0.948 Btu
1 British thermal unit (Btu) = 0.252 kcal = 1.055 kJ
1 kilowatt-hour (kWh) = 860 kcal = 3600 kJ = 3412 Btu

Calorific equivalents One tonne of oil equivalent equals approximately :
Heat units 10 million kilocalories 42 gigajoules
40 million Btu
Solid fuels 1.5 tonnes of hard coal 3 tonnes of lignite
Gaseous fuels See natural gas and LNG table
Electricity 12 mega watt-hours
One million tonnes of oil produces about 4400 gigawatt-hours
(=4.4 terawatt hours) of electricity in modern power station.

1 tonne of ethanol = .57 tonne of oil 
1 tonne of biodiesel = .88 tonne of oil 
1 barrel of ethanol = .57 barrel of oil 
1 barrel of biodiesel = .88 barrel of oil

Other terms

Tonnes: Metric equivalent of tons