Convert British Thermal Units to Gigajoules

Enter the energy in british thermal units below to get the value converted to gigajoules.

Results in Gigajoules:
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1 BTU = 1.0551E-6 GJ

How to Convert British Thermal Units to Gigajoules

To convert a british thermal unit measurement to a gigajoule measurement, multiply the energy by the conversion ratio. One british thermal unit is equal to 1.0551E-6 gigajoules, so use this simple formula to convert:

gigajoules = british thermal units × 1.0551E-6

The energy in gigajoules is equal to the british thermal units multiplied by 1.0551E-6.

For example, here's how to convert 5 british thermal units to gigajoules using the formula above.
5 BTU = (5 × 1.0551E-6) = 5.2753E-6 GJ

British thermal units and gigajoules are both units used to measure energy. Keep reading to learn more about each unit of measure.

British Thermal Units

British thermal units are a measure of heat energy. Specifically, one british thermal unit is equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit. They are often used as a way to rate the energy heat producing appliances such furnaces, and to price heating fuels such as natural gas.

The british thermal unit is a US customary unit of energy. British thermal units can be abbreviated as BTU, for example 1 british thermal unit can be written as 1 BTU.


One gigajoule is equal to 1,000,000,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The gigajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "giga" is the prefix for 106. Gigajoules can be abbreviated as GJ, for example 1 gigajoule can be written as 1 GJ.

British Thermal Unit Measurements and Equivalent Gigajoule Conversions

Common british thermal unit values converted to the equivalent gigajoule value
British Thermal Units Gigajoules
1 BTU 0.0000010551 GJ
2 BTU 0.0000021101 GJ
3 BTU 0.0000031652 GJ
4 BTU 0.0000042202 GJ
5 BTU 0.0000052753 GJ
6 BTU 0.0000063303 GJ
7 BTU 0.0000073854 GJ
8 BTU 0.0000084404 GJ
9 BTU 0.0000094955 GJ
10 BTU 0.000010551 GJ
11 BTU 0.000011606 GJ
12 BTU 0.000012661 GJ
13 BTU 0.000013716 GJ
14 BTU 0.000014771 GJ
15 BTU 0.000015826 GJ
16 BTU 0.000016881 GJ
17 BTU 0.000017936 GJ
18 BTU 0.000018991 GJ
19 BTU 0.000020046 GJ
20 BTU 0.000021101 GJ
21 BTU 0.000022156 GJ
22 BTU 0.000023211 GJ
23 BTU 0.000024266 GJ
24 BTU 0.000025321 GJ
25 BTU 0.000026376 GJ
26 BTU 0.000027431 GJ
27 BTU 0.000028487 GJ
28 BTU 0.000029542 GJ
29 BTU 0.000030597 GJ
30 BTU 0.000031652 GJ
31 BTU 0.000032707 GJ
32 BTU 0.000033762 GJ
33 BTU 0.000034817 GJ
34 BTU 0.000035872 GJ
35 BTU 0.000036927 GJ
36 BTU 0.000037982 GJ
37 BTU 0.000039037 GJ
38 BTU 0.000040092 GJ
39 BTU 0.000041147 GJ
40 BTU 0.000042202 GJ

More British Thermal Unit Energy Conversions

Convert to Joules
1 BTU is equal to 1,055.06 joules
Convert to Kilojoules
1 BTU is equal to 1.055056 kilojoules
Convert to Megajoules
1 BTU is equal to 0.001055 megajoules
Convert to Calories
1 BTU is equal to 252.164401 calories
Convert to Kilocalories
1 BTU is equal to 0.252164 kilocalories
Convert to Megacalories
1 BTU is equal to 0.000252 megacalories
Watts x Time
Convert to Watt-hours
1 BTU is equal to 0.293071 watt-hours
Convert to Kilowatt-hours
1 BTU is equal to 0.000293 kilowatt-hours
Convert to Megawatt-hours
1 BTU is equal to 2.9307E-7 megawatt-hours
Convert to Watt-seconds
1 BTU is equal to 1,055.06 watt-seconds
Thermal Units
Convert to Million BTU
1 BTU is equal to 1.0E-6 million BTU
Convert to Therms
1 BTU is equal to 1.0E-5 therms
Convert to Quads
1 BTU is equal to 1.0E-15 quads
Convert to Electronvolts
1 BTU is equal to 6,585,100,000,000,000,131,072 electronvolts
Convert to Kiloelectronvolts
1 BTU is equal to 6,585,100,000,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 BTU is equal to 6,585,100,000,000,000 megaelectronvolts