To convert btu to ergs, multiply by 10550558530.
The calculation uses 1 BTU = 10550558530 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.
Uses the International Table BTU. Other BTU definitions differ slightly.
The formula
BTU- Input unit: btu
erg- Output unit: ergs
How to use this calculator
- Enter a value in BTU.
- Multiply by the stored conversion factor.
- Read the result in erg; divide by the same factor to convert back.
Worked examples
Worked conversion
1 BTU × 10550558530 ≈ 10550558530 erg.
Reverse conversion
10550558530 erg ÷ 10550558530 ≈ 1 BTU. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 10550558530 erg per BTU. Uses the International Table BTU. Other BTU definitions differ slightly.
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.
BTU to erg table
| BTU | erg (rounded) |
|---|---|
| 0 | 0 |
| 1 | 10550558530 |
| 2 | 21101117050 |
| 5 | 52752792630 |
| 10 | 105505585300 |
| 100 | 1055055853000 |