BTU to Gigajoule
Convert BTU to Gigajoule instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Formula
GJ = BTU × 1.05506e-06
BTU = GJ × 947817
Conversion table
| 1 BTU | 1.05506e-06 GJ |
| 5 BTU | 5.27528e-06 GJ |
| 10 BTU | 1.05506e-05 GJ |
| 20 BTU | 2.11011e-05 GJ |
| 50 BTU | 5.27528e-05 GJ |
| 100 BTU | 0.000105506 GJ |
| 500 BTU | 0.000527528 GJ |
| 1000 BTU | 0.00105506 GJ |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the BTU (BTU). British thermal unit.
What is the destination unit in this conversion?
The destination unit is the Gigajoule (GJ). Gigajoule is 1000000000 joule units.
How do I convert BTU to Gigajoule?
Multiply the BTU value by 1.05506e-06. For example, 10 BTU × 1.05506e-06 = 1.05506e-05 GJ.
Is the BTU to Gigajoule conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in BTU needs to be compared with, or reported in, Gigajoule, such as in engineering, scientific, or industrial calculations.
Can I convert Gigajoule back to BTU?
Yes. Multiply the Gigajoule value by 947817 to get BTU.
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About this conversion
This page converts BTU (BTU) to Gigajoule (GJ) within the engineering converter.
British thermal unit. Gigajoule is 1000000000 joule units.
The formula is GJ = BTU × 1.05506e-06, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common BTU values already converted to Gigajoule.