British Thermal Units to Kilojoules Converter
Convert British thermal units (IT) (Btu) to kilojoules (kJ), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 Btu = 1.05505585262 kJ
- 1 × 1.05505585262 = 1.05505585262 kJ
How to convert british thermal units to kilojoules
1 Btu = 1.05505585262 kJ, so multiply by 1.05505585262 to go from British thermal units (IT) to kilojoules. Going the other way, 1 kJ = 0.947817120313 Btu.
kJ = Btu × 1.05505585262 Btu = kJ × 0.947817120313
Worked example:
1 Btu = 1.05505585262 kJ 5 × 1.05505585262 = 5.2752792631 kJ
British Thermal Units to kilojoules table
| British Thermal Units | Kilojoules |
|---|---|
| 1 Btu | 1.05505585262 kJ |
| 2 Btu | 2.11011170524 kJ |
| 3 Btu | 3.16516755786 kJ |
| 4 Btu | 4.22022341048 kJ |
| 5 Btu | 5.2752792631 kJ |
| 6 Btu | 6.33033511572 kJ |
| 7 Btu | 7.38539096834 kJ |
| 8 Btu | 8.44044682096 kJ |
| 9 Btu | 9.49550267358 kJ |
| 10 Btu | 10.5505585262 kJ |
| 15 Btu | 15.8258377893 kJ |
| 20 Btu | 21.1011170524 kJ |
| 25 Btu | 26.3763963155 kJ |
| 30 Btu | 31.6516755786 kJ |
| 40 Btu | 42.2022341048 kJ |
| 50 Btu | 52.752792631 kJ |
| 75 Btu | 79.1291889465 kJ |
| 100 Btu | 105.505585262 kJ |
| 250 Btu | 263.763963155 kJ |
| 500 Btu | 527.52792631 kJ |
| 1000 Btu | 1,055.05585262 kJ |
About the units
- British Thermal Units (Btu)
- British thermal units (IT), a US customary unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
- Kilojoules (kJ)
- Kilojoules, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).
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