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One BTU is the energy required to heat 1 avoirdupois pound of liquid water by 1 degree Fahrenheit, at a pressure of one atmosphere. The Btu (mean) uses a result averaged over water temperatures 0 to 100 °C (32.0 to 212.0 °F) which is approx. 1055.87 J
One Kilojoule is 1,000 Newton Metre, ie the work done or energy transfered to an object when a 1,000 Newton force acts on it over one metre. It can also be defined as the heat energy dissipated by a current of 1,000 amperes passing through a one Ohm resistor for one second
| Btu (mean) | Kilojoules |
|---|---|
| 0Btu (mean) | 0.00kJ |
| 1Btu (mean) | 1.06kJ |
| 2Btu (mean) | 2.11kJ |
| 3Btu (mean) | 3.17kJ |
| 4Btu (mean) | 4.22kJ |
| 5Btu (mean) | 5.28kJ |
| 6Btu (mean) | 6.34kJ |
| 7Btu (mean) | 7.39kJ |
| 8Btu (mean) | 8.45kJ |
| 9Btu (mean) | 9.50kJ |
| 10Btu (mean) | 10.56kJ |
| 11Btu (mean) | 11.61kJ |
| 12Btu (mean) | 12.67kJ |
| 13Btu (mean) | 13.73kJ |
| 14Btu (mean) | 14.78kJ |
| 15Btu (mean) | 15.84kJ |
| 16Btu (mean) | 16.89kJ |
| 17Btu (mean) | 17.95kJ |
| 18Btu (mean) | 19.01kJ |
| 19Btu (mean) | 20.06kJ |
| Btu (mean) | Kilojoules |
|---|---|
| 20Btu (mean) | 21.12kJ |
| 21Btu (mean) | 22.17kJ |
| 22Btu (mean) | 23.23kJ |
| 23Btu (mean) | 24.29kJ |
| 24Btu (mean) | 25.34kJ |
| 25Btu (mean) | 26.40kJ |
| 26Btu (mean) | 27.45kJ |
| 27Btu (mean) | 28.51kJ |
| 28Btu (mean) | 29.56kJ |
| 29Btu (mean) | 30.62kJ |
| 30Btu (mean) | 31.68kJ |
| 31Btu (mean) | 32.73kJ |
| 32Btu (mean) | 33.79kJ |
| 33Btu (mean) | 34.84kJ |
| 34Btu (mean) | 35.90kJ |
| 35Btu (mean) | 36.96kJ |
| 36Btu (mean) | 38.01kJ |
| 37Btu (mean) | 39.07kJ |
| 38Btu (mean) | 40.12kJ |
| 39Btu (mean) | 41.18kJ |
| Btu (mean) | Kilojoules |
|---|---|
| 40Btu (mean) | 42.23kJ |
| 41Btu (mean) | 43.29kJ |
| 42Btu (mean) | 44.35kJ |
| 43Btu (mean) | 45.40kJ |
| 44Btu (mean) | 46.46kJ |
| 45Btu (mean) | 47.51kJ |
| 46Btu (mean) | 48.57kJ |
| 47Btu (mean) | 49.63kJ |
| 48Btu (mean) | 50.68kJ |
| 49Btu (mean) | 51.74kJ |
| 50Btu (mean) | 52.79kJ |
| 51Btu (mean) | 53.85kJ |
| 52Btu (mean) | 54.91kJ |
| 53Btu (mean) | 55.96kJ |
| 54Btu (mean) | 57.02kJ |
| 55Btu (mean) | 58.07kJ |
| 56Btu (mean) | 59.13kJ |
| 57Btu (mean) | 60.18kJ |
| 58Btu (mean) | 61.24kJ |
| 59Btu (mean) | 62.30kJ |