Gigajoules to British Thermal Units (GJ → BTU)
Formula
1 GJ = 947813.3944988911 BTUConversion Table
| GJ | BTU |
|---|---|
| 0 | 0 |
| 1.0000 | 947,810 |
| 2.0000 | 1,895,600 |
| 3.0000 | 2,843,400 |
| 4.0000 | 3,791,300 |
| 5.0000 | 4,739,100 |
| 6.0000 | 5,686,900 |
| 7.0000 | 6,634,700 |
| 8.0000 | 7,582,500 |
| 9.0000 | 8,530,300 |
| 10.000 | 9,478,100 |
| 11.000 | 10,426,000 |
| 12.000 | 11,374,000 |
| 13.000 | 12,322,000 |
| 14.000 | 13,269,000 |
| 15.000 | 14,217,000 |
| 16.000 | 15,165,000 |
| 17.000 | 16,113,000 |
| 18.000 | 17,061,000 |
| 19.000 | 18,008,000 |
| GJ | BTU |
|---|---|
| 20.000 | 18,956,000 |
| 21.000 | 19,904,000 |
| 22.000 | 20,852,000 |
| 23.000 | 21,800,000 |
| 24.000 | 22,748,000 |
| 25.000 | 23,695,000 |
| 26.000 | 24,643,000 |
| 27.000 | 25,591,000 |
| 28.000 | 26,539,000 |
| 29.000 | 27,487,000 |
| 30.000 | 28,434,000 |
| 31.000 | 29,382,000 |
| 32.000 | 30,330,000 |
| 33.000 | 31,278,000 |
| 34.000 | 32,226,000 |
| 35.000 | 33,173,000 |
| 36.000 | 34,121,000 |
| 37.000 | 35,069,000 |
| 38.000 | 36,017,000 |
| 39.000 | 36,965,000 |
| GJ | BTU |
|---|---|
| 40.000 | 37,913,000 |
| 41.000 | 38,860,000 |
| 42.000 | 39,808,000 |
| 43.000 | 40,756,000 |
| 44.000 | 41,704,000 |
| 45.000 | 42,652,000 |
| 46.000 | 43,599,000 |
| 47.000 | 44,547,000 |
| 48.000 | 45,495,000 |
| 49.000 | 46,443,000 |
| 50.000 | 47,391,000 |
| 51.000 | 48,338,000 |
| 52.000 | 49,286,000 |
| 53.000 | 50,234,000 |
| 54.000 | 51,182,000 |
| 55.000 | 52,130,000 |
| 56.000 | 53,078,000 |
| 57.000 | 54,025,000 |
| 58.000 | 54,973,000 |
| 59.000 | 55,921,000 |
| GJ | BTU |
|---|---|
| 60.000 | 56,869,000 |
| 61.000 | 57,817,000 |
| 62.000 | 58,764,000 |
| 63.000 | 59,712,000 |
| 64.000 | 60,660,000 |
| 65.000 | 61,608,000 |
| 66.000 | 62,556,000 |
| 67.000 | 63,503,000 |
| 68.000 | 64,451,000 |
| 69.000 | 65,399,000 |
| 70.000 | 66,347,000 |
| 71.000 | 67,295,000 |
| 72.000 | 68,243,000 |
| 73.000 | 69,190,000 |
| 74.000 | 70,138,000 |
| 75.000 | 71,086,000 |
| 76.000 | 72,034,000 |
| 77.000 | 72,982,000 |
| 78.000 | 73,929,000 |
| 79.000 | 74,877,000 |
Gigajoules to British Thermal Units Conversion
Converting Gigajoules (GJ) to British Thermal Units (BTU) is a common energy and power conversion. 1 GJ equals 947,813.394499 BTU. For example, 100 GJ is equal to 94,781,339.449889 BTU.
Quick Mental Math: Gigajoules to British Thermal Units
1 gigajoule is 947800 british thermal units, so use that as the mental anchor.
Why is converting Gigajoules to British Thermal Units tricky?
gigajoules to british thermal units mixes thermal units with rate units, so people often miss whether the value is energy or energy per hour.
Quick Reference Values
1 GJ = 947,813.394499 BTU. 5 GJ = 4,739,066.972494 BTU. 10 GJ = 9,478,133.944989 BTU. 25 GJ = 23,695,334.862472 BTU. 50 GJ = 47,390,669.724945 BTU. 100 GJ = 94,781,339.449889 BTU.
What is Gigajoules?
Gigajoules (GJ) is a unit of energy and power. The gigajoule is a unit of energy equal to one billion joules (10⁹ J). One joule is the energy transferred when applying one newton of force over one meter, so a gigajoule represents a large energy quantity used in industrial and scientific applications [bipm-si-brochure]. The joule was defined in the 19th century and named after James Prescott Joule. The prefix 'giga-' was adopted internationally as part of SI prefixes in 1960 by the CGPM to denote a factor of 10⁹, formalizing the gigajoule as an SI derived unit [cgpm-resolutions]. Gigajoules are widely used in energy industries such as natural gas and electricity production, especially in Canada and Australia. They appear in energy statistics and engineering calculations per standards from BIPM and NIST [bipm-si-brochure][nist-sp-811].
What is British Thermal Units?
British Thermal Units (BTU) is a unit of energy and power. The British Thermal Unit (BTU) measures energy and is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. One BTU equals approximately 1055.06 joules in the International System of Units (SI). This unit is standardized for heating and cooling system capacities and energy content calculations [nist-sp-811]. The BTU originated in the mid-19th century during the industrial revolution to quantify heat energy for steam engines and heating systems. It was standardized by engineering societies to unify thermal energy measurements in the United Kingdom and the United States [nist-sp-811]. BTU remains widely used in the United States, the United Kingdom, and Canada for HVAC system ratings and energy content in fuels. It is recognized by industry standards and energy regulations but is less common in countries using the SI system exclusively [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: giga joules, giga-joules, giga joule, gigajoule, british thermal unit, btu unit, british therm unit, btu energy, british thermals unit. All of these refer to the Gigajoules to British Thermal Units conversion.