The International Table (IT) British thermal unit (BTU) equals exactly 1055.05585262 joules. This differs from the thermochemical BTU (1054.35 J); we use the IT definition consistently throughout.
Definition
- Dimension
- Energy
- Symbols
- BTU
- System
- convention
- Base factor
- ×1055.05585262
- Exactness
- standard definition
Fixed by a published standard or convention (toe, therm, IT cal/BTU).
Also known as
btubtusbritish thermal unitsbtu_it
Sources
Common conversions
for 1 BTU| joule | 1,055.05585262 | J | standard definition |
| kilojoule | 1.05505585262 | kJ | standard definition |
| megajoule | 0.00105505585262 | MJ | standard definition |
| gigajoule | 0.00000105505585262 | GJ | standard definition |
| kilowatt hour | ~0.000293071 | kWh | standard definition |
| megawatt hour | ~0.000000293071 | MWh | standard definition |
| million British thermal units | 0.000001 | MMBTU | standard definition |
| therm (US) | 0.00001 | therm | standard definition |
| tonne of oil equivalent | ~0.0000000251996 | toe | standard definition |