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Gigajoules to British Thermal Units Converter

Convert gigajoules (GJ) to British thermal units (IT) (Btu), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
947,817.120313 Btu
joules (watt-seconds)
1,000,000,000 J
kilojoules
1,000,000 kJ
megajoules
1,000 MJ
calories (thermochemical)
239,005,736.138 cal
kilocalories (food Calories)
239,005.736138 kcal
megacalories
239.005736138 Mcal
watt-hours
277,777.777778 Wh
kilowatt-hours
277.777777778 kWh
megawatt-hours
0.277777777778 MWh
million Btu
0.947817120313 MMBtu
therms (100,000 Btu)
9.47817120313 thm
quads (10¹⁵ Btu)
9.47817120313 × 10⁻¹⁰ quad
electronvolts
6.24150907446 × 10²⁷ eV
kiloelectronvolts
6.24150907446 × 10²⁴ keV
megaelectronvolts
6.24150907446 × 10²¹ MeV

1 GJ = 947,817.120313 Btu

Show the working
  1. 1 GJ = 947817.120313 Btu
  2. 1 × 947817.120313 = 947817.120313 Btu

How to convert gigajoules to british thermal units

1 GJ = 947,817.120313 Btu, so multiply by 947,817.120313 to go from gigajoules to British thermal units (IT). Going the other way, 1 Btu = 1.05505585262 × 10⁻⁶ GJ.

Btu = GJ × 947,817.120313
GJ = Btu × 1.05505585262

Worked example:

1 GJ = 947817.120313 Btu
5 × 947817.120313 = 4739085.60157 Btu

Gigajoules to british thermal units table

GigajoulesBritish Thermal Units
1 GJ947,817.120313 Btu
2 GJ1,895,634.24063 Btu
3 GJ2,843,451.36094 Btu
4 GJ3,791,268.48125 Btu
5 GJ4,739,085.60157 Btu
6 GJ5,686,902.72188 Btu
7 GJ6,634,719.84219 Btu
8 GJ7,582,536.96251 Btu
9 GJ8,530,354.08282 Btu
10 GJ9,478,171.20313 Btu
15 GJ14,217,256.8047 Btu
20 GJ18,956,342.4063 Btu
25 GJ23,695,428.0078 Btu
30 GJ28,434,513.6094 Btu
40 GJ37,912,684.8125 Btu
50 GJ47,390,856.0157 Btu
75 GJ71,086,284.0235 Btu
100 GJ94,781,712.0313 Btu
250 GJ236,954,280.078 Btu
500 GJ473,908,560.157 Btu
1000 GJ947,817,120.313 Btu

About the units

British Thermal Units (Btu)
British thermal units (IT), a US customary unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed