Note: Fractional results are rounded to the nearest 1/64. For a more accurate answer please select 'decimal' from the options above the result.
Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.
Note: For a pure decimal result please select 'decimal' from the options above the result.
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
The 5th International Conference on the Properties of Steam defined the International Table calorie as 4.1868 J. One Calorie (Kilogram,IT) is 1,000 times this value - 4,186.8 J
| -20.000Btu (mean) | -5.0438calIT |
| -19.000Btu (mean) | -4.7916calIT |
| -18.000Btu (mean) | -4.5394calIT |
| -17.000Btu (mean) | -4.2872calIT |
| -16.000Btu (mean) | -4.0350calIT |
| -15.000Btu (mean) | -3.7829calIT |
| -14.000Btu (mean) | -3.5307calIT |
| -13.000Btu (mean) | -3.2785calIT |
| -12.000Btu (mean) | -3.0263calIT |
| -11.000Btu (mean) | -2.7741calIT |
| -10.000Btu (mean) | -2.5219calIT |
| -9.0000Btu (mean) | -2.2697calIT |
| -8.0000Btu (mean) | -2.0175calIT |
| -7.0000Btu (mean) | -1.7653calIT |
| -6.0000Btu (mean) | -1.5131calIT |
| -5.0000Btu (mean) | -1.2610calIT |
| -4.0000Btu (mean) | -1.0088calIT |
| -3.0000Btu (mean) | -0.75657calIT |
| -2.0000Btu (mean) | -0.50438calIT |
| -1.0000Btu (mean) | -0.25219calIT |
| Btu (mean) | Calories (Kilogram,I.T.) |
|---|---|
| 0.0000Btu (mean) | 0.0000calIT |
| 1.0000Btu (mean) | 0.25219calIT |
| 2.0000Btu (mean) | 0.50438calIT |
| 3.0000Btu (mean) | 0.75657calIT |
| 4.0000Btu (mean) | 1.0088calIT |
| 5.0000Btu (mean) | 1.2610calIT |
| 6.0000Btu (mean) | 1.5131calIT |
| 7.0000Btu (mean) | 1.7653calIT |
| 8.0000Btu (mean) | 2.0175calIT |
| 9.0000Btu (mean) | 2.2697calIT |
| 10.000Btu (mean) | 2.5219calIT |
| 11.000Btu (mean) | 2.7741calIT |
| 12.000Btu (mean) | 3.0263calIT |
| 13.000Btu (mean) | 3.2785calIT |
| 14.000Btu (mean) | 3.5307calIT |
| 15.000Btu (mean) | 3.7829calIT |
| 16.000Btu (mean) | 4.0350calIT |
| 17.000Btu (mean) | 4.2872calIT |
| 18.000Btu (mean) | 4.5394calIT |
| 19.000Btu (mean) | 4.7916calIT |
| Btu (mean) | Calories (Kilogram,I.T.) |
|---|---|
| 20.000Btu (mean) | 5.0438calIT |
| 21.000Btu (mean) | 5.2960calIT |
| 22.000Btu (mean) | 5.5482calIT |
| 23.000Btu (mean) | 5.8004calIT |
| 24.000Btu (mean) | 6.0526calIT |
| 25.000Btu (mean) | 6.3048calIT |
| 26.000Btu (mean) | 6.5569calIT |
| 27.000Btu (mean) | 6.8091calIT |
| 28.000Btu (mean) | 7.0613calIT |
| 29.000Btu (mean) | 7.3135calIT |
| 30.000Btu (mean) | 7.5657calIT |
| 31.000Btu (mean) | 7.8179calIT |
| 32.000Btu (mean) | 8.0701calIT |
| 33.000Btu (mean) | 8.3223calIT |
| 34.000Btu (mean) | 8.5745calIT |
| 35.000Btu (mean) | 8.8267calIT |
| 36.000Btu (mean) | 9.0788calIT |
| 37.000Btu (mean) | 9.3310calIT |
| 38.000Btu (mean) | 9.5832calIT |
| 39.000Btu (mean) | 9.8354calIT |
| Btu (mean) | Calories (Kilogram,I.T.) |
|---|---|
| 40.000Btu (mean) | 10.088calIT |
| 41.000Btu (mean) | 10.340calIT |
| 42.000Btu (mean) | 10.592calIT |
| 43.000Btu (mean) | 10.844calIT |
| 44.000Btu (mean) | 11.096calIT |
| 45.000Btu (mean) | 11.349calIT |
| 46.000Btu (mean) | 11.601calIT |
| 47.000Btu (mean) | 11.853calIT |
| 48.000Btu (mean) | 12.105calIT |
| 49.000Btu (mean) | 12.357calIT |
| 50.000Btu (mean) | 12.610calIT |
| 51.000Btu (mean) | 12.862calIT |
| 52.000Btu (mean) | 13.114calIT |
| 53.000Btu (mean) | 13.366calIT |
| 54.000Btu (mean) | 13.618calIT |
| 55.000Btu (mean) | 13.870calIT |
| 56.000Btu (mean) | 14.123calIT |
| 57.000Btu (mean) | 14.375calIT |
| 58.000Btu (mean) | 14.627calIT |
| 59.000Btu (mean) | 14.879calIT |
| 60.000Btu (mean) | 15.131calIT |
| 61.000Btu (mean) | 15.384calIT |
| 62.000Btu (mean) | 15.636calIT |
| 63.000Btu (mean) | 15.888calIT |
| 64.000Btu (mean) | 16.140calIT |
| 65.000Btu (mean) | 16.392calIT |
| 66.000Btu (mean) | 16.645calIT |
| 67.000Btu (mean) | 16.897calIT |
| 68.000Btu (mean) | 17.149calIT |
| 69.000Btu (mean) | 17.401calIT |
| 70.000Btu (mean) | 17.653calIT |
| 71.000Btu (mean) | 17.906calIT |
| 72.000Btu (mean) | 18.158calIT |
| 73.000Btu (mean) | 18.410calIT |
| 74.000Btu (mean) | 18.662calIT |
| 75.000Btu (mean) | 18.914calIT |
| 76.000Btu (mean) | 19.166calIT |
| 77.000Btu (mean) | 19.419calIT |
| 78.000Btu (mean) | 19.671calIT |
| 79.000Btu (mean) | 19.923calIT |