To convert megajoules to ergs, multiply by 10000000000000.
The calculation uses 1 MJ = 10000000000000 erg. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
The formula
value in erg = value in MJ × 10000000000000
MJ- Input unit: megajoules
erg- Output unit: ergs
How to use this calculator
- Enter a value in MJ.
- Multiply by the stored conversion factor.
- Read the result in erg; divide by the same factor to convert back.
Worked examples
Worked conversion
1 MJ × 10000000000000 ≈ 10000000000000 erg.
Reverse conversion
10000000000000 erg ÷ 10000000000000 ≈ 1 MJ. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 10000000000000 erg per MJ.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
MJ to erg table
| MJ | erg (rounded) |
|---|---|
| 0 | 0 |
| 1 | 10000000000000 |
| 2 | 20000000000000 |
| 5 | 50000000000000 |
| 10 | 100000000000000 |
| 100 | 1000000000000000 |
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