British thermal units (IT) to Gigajoules
1 BTU ≈ 0.000001055 GJ. Edit either value to convert instantly.
Conversion formula
GJ = BTU × (1,055.05585262) × (1 × 10⁻⁹)1 BTU ≈ 0.00000105506 GJ
British thermal unit (IT) (BTU)
British thermal unit (IT) is a unit of energy: 1 BTU = 1,055.05585262 J. Uses the International Table definition (IT), not the thermochemical BTU.
Source: NBSIR 81-2401, Appendix A3.2: International Table British thermal unit
gigajoule (GJ)
Gigajoule is a unit of energy: 1 GJ = 1 × 10⁹ J.
Source: BIPM, The International System of Units (SI), 9th edition
Conversion table
| BTU | GJ |
|---|---|
| ≈ 0.00000105506 | |
| ≈ 0.00000211011 | |
| ≈ 0.00000527528 | |
| ≈ 0.0000105506 | |
| ≈ 0.0000158258 | |
| ≈ 0.0000211011 | |
| ≈ 0.0000263764 | |
| ≈ 0.0000316517 | |
| ≈ 0.0000422022 | |
| ≈ 0.0000474775 |
| BTU | GJ |
|---|---|
| ≈ 0.0000527528 | |
| ≈ 0.0000633034 | |
| ≈ 0.0000738539 | |
| ≈ 0.0000844045 | |
| ≈ 0.000094955 | |
| ≈ 0.000105506 | |
| ≈ 0.000158258 | |
| ≈ 0.000168809 | |
| ≈ 0.000179359 | |
| ≈ 0.00018991 |
Frequently asked questions
How many gigajoules are in 1 British thermal unit (IT)?
1 BTU ≈ 0.000001055 GJ. GJ = BTU × (1,055.05585262) × (1 × 10⁻⁹)
How do I convert BTU to GJ?
GJ = BTU × (1,055.05585262) × (1 × 10⁻⁹)
Is 1 British thermal unit (IT) bigger than 1 gigajoule?
1 BTU ≈ 0.000001055 GJ.
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