Power and Energy
BTUtoMJ
Convert International Table BTUs (BTU) to megajoules (MJ).
Factor1 BTU = 0.001055056 MJ
Converter
BTU
Accepts numbers or expressions, e.g. 150 + 14.7
Result
MJ
Rendered to 6 significant figures.
Formula
Formula
MJ = BTU × 0.001055056
Multiply any value in International Table BTUs by 0.001055056 to obtain the value in megajoules.
Worked example
Convert 1000 BTU to MJ.
- 01Start with 1000 BTU.
- 02Multiply by the conversion factor: 1000 × 0.001055056 = 1.05506 MJ.
Result1000 BTU = 1.05506 MJ
Conversion table
| BTU | MJ |
|---|---|
| 1 | 0.0010551 |
| 2 | 0.0021101 |
| 5 | 0.0052753 |
| 10 | 0.010551 |
| 20 | 0.021101 |
| 50 | 0.052753 |
| 100 | 0.10551 |
| 200 | 0.21101 |
| 500 | 0.52753 |
| 1000 | 1.0551 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from BTU to MJ?
1 BTU equals 0.001055056 MJ. To convert, multiply the value in International Table BTUs by 0.001055056.
How do I convert 1 BTU to MJ?
1 BTU = 0.00105506 MJ. For any value, multiply by 0.001055056.
How do I convert MJ back to BTU?
Divide by the same factor — or equivalently, multiply by 947.8171. So 1 MJ = 947.817 BTU.
When would I need to convert International Table BTU to megajoule?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).