EngiRef / Energy conversion
Convert BTU (IT) to Joules (BTU to J)
1 BTU = 1055.05585 J. Convert BTU (IT) to joules with the exact factor, a common-values table and a free converter.
Conversion factor
J = BTU × 1055.05585
1 BTU = 1055.05585 J
Multiply by 1055.05585 J to go from BTU (IT) to joules, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
BTU to J table
| BTU (IT) (BTU) | Joules (J) |
|---|---|
| 1 BTU | 1055.05585 J |
| 2 BTU | 2110.11171 J |
| 5 BTU | 5275.27926 J |
| 10 BTU | 10550.5585 J |
| 20 BTU | 21101.1171 J |
| 50 BTU | 52752.7926 J |
| 100 BTU | 105505.585 J |
Every figure is computed at build time by the site’s own converter from the energy unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many joules are in one BTU (IT)?
One BTU (IT) is 1055.05585 J, so 100 BTU is 105505.585 J.
What is the formula to convert BTU (IT) to joules?
J = BTU × 1055.05585. Multiply the value in BTU (IT) by 1055.05585 to get joules.
How do I convert joules back to BTU (IT)?
BTU = J × 0.00094781712, so 1 J is 0.00094781712 BTU. The J to BTU page carries the same table in that direction.