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
| -20.000Btu (mean) | -5043.8calIT |
| -19.000Btu (mean) | -4791.6calIT |
| -18.000Btu (mean) | -4539.4calIT |
| -17.000Btu (mean) | -4287.2calIT |
| -16.000Btu (mean) | -4035.0calIT |
| -15.000Btu (mean) | -3782.9calIT |
| -14.000Btu (mean) | -3530.7calIT |
| -13.000Btu (mean) | -3278.5calIT |
| -12.000Btu (mean) | -3026.3calIT |
| -11.000Btu (mean) | -2774.1calIT |
| -10.000Btu (mean) | -2521.9calIT |
| -9.0000Btu (mean) | -2269.7calIT |
| -8.0000Btu (mean) | -2017.5calIT |
| -7.0000Btu (mean) | -1765.3calIT |
| -6.0000Btu (mean) | -1513.1calIT |
| -5.0000Btu (mean) | -1261.0calIT |
| -4.0000Btu (mean) | -1008.8calIT |
| -3.0000Btu (mean) | -756.57calIT |
| -2.0000Btu (mean) | -504.38calIT |
| -1.0000Btu (mean) | -252.19calIT |
| Btu (mean) | Calories (I.T.) |
|---|---|
| 0.0000Btu (mean) | 0.0000calIT |
| 1.0000Btu (mean) | 252.19calIT |
| 2.0000Btu (mean) | 504.38calIT |
| 3.0000Btu (mean) | 756.57calIT |
| 4.0000Btu (mean) | 1008.8calIT |
| 5.0000Btu (mean) | 1261.0calIT |
| 6.0000Btu (mean) | 1513.1calIT |
| 7.0000Btu (mean) | 1765.3calIT |
| 8.0000Btu (mean) | 2017.5calIT |
| 9.0000Btu (mean) | 2269.7calIT |
| 10.000Btu (mean) | 2521.9calIT |
| 11.000Btu (mean) | 2774.1calIT |
| 12.000Btu (mean) | 3026.3calIT |
| 13.000Btu (mean) | 3278.5calIT |
| 14.000Btu (mean) | 3530.7calIT |
| 15.000Btu (mean) | 3782.9calIT |
| 16.000Btu (mean) | 4035.0calIT |
| 17.000Btu (mean) | 4287.2calIT |
| 18.000Btu (mean) | 4539.4calIT |
| 19.000Btu (mean) | 4791.6calIT |
| Btu (mean) | Calories (I.T.) |
|---|---|
| 20.000Btu (mean) | 5043.8calIT |
| 21.000Btu (mean) | 5296.0calIT |
| 22.000Btu (mean) | 5548.2calIT |
| 23.000Btu (mean) | 5800.4calIT |
| 24.000Btu (mean) | 6052.6calIT |
| 25.000Btu (mean) | 6304.8calIT |
| 26.000Btu (mean) | 6556.9calIT |
| 27.000Btu (mean) | 6809.1calIT |
| 28.000Btu (mean) | 7061.3calIT |
| 29.000Btu (mean) | 7313.5calIT |
| 30.000Btu (mean) | 7565.7calIT |
| 31.000Btu (mean) | 7817.9calIT |
| 32.000Btu (mean) | 8070.1calIT |
| 33.000Btu (mean) | 8322.3calIT |
| 34.000Btu (mean) | 8574.5calIT |
| 35.000Btu (mean) | 8826.7calIT |
| 36.000Btu (mean) | 9078.8calIT |
| 37.000Btu (mean) | 9331.0calIT |
| 38.000Btu (mean) | 9583.2calIT |
| 39.000Btu (mean) | 9835.4calIT |
| Btu (mean) | Calories (I.T.) |
|---|---|
| 40.000Btu (mean) | 10088calIT |
| 41.000Btu (mean) | 10340calIT |
| 42.000Btu (mean) | 10592calIT |
| 43.000Btu (mean) | 10844calIT |
| 44.000Btu (mean) | 11096calIT |
| 45.000Btu (mean) | 11349calIT |
| 46.000Btu (mean) | 11601calIT |
| 47.000Btu (mean) | 11853calIT |
| 48.000Btu (mean) | 12105calIT |
| 49.000Btu (mean) | 12357calIT |
| 50.000Btu (mean) | 12610calIT |
| 51.000Btu (mean) | 12862calIT |
| 52.000Btu (mean) | 13114calIT |
| 53.000Btu (mean) | 13366calIT |
| 54.000Btu (mean) | 13618calIT |
| 55.000Btu (mean) | 13870calIT |
| 56.000Btu (mean) | 14123calIT |
| 57.000Btu (mean) | 14375calIT |
| 58.000Btu (mean) | 14627calIT |
| 59.000Btu (mean) | 14879calIT |
| 60.000Btu (mean) | 15131calIT |
| 61.000Btu (mean) | 15384calIT |
| 62.000Btu (mean) | 15636calIT |
| 63.000Btu (mean) | 15888calIT |
| 64.000Btu (mean) | 16140calIT |
| 65.000Btu (mean) | 16392calIT |
| 66.000Btu (mean) | 16645calIT |
| 67.000Btu (mean) | 16897calIT |
| 68.000Btu (mean) | 17149calIT |
| 69.000Btu (mean) | 17401calIT |
| 70.000Btu (mean) | 17653calIT |
| 71.000Btu (mean) | 17906calIT |
| 72.000Btu (mean) | 18158calIT |
| 73.000Btu (mean) | 18410calIT |
| 74.000Btu (mean) | 18662calIT |
| 75.000Btu (mean) | 18914calIT |
| 76.000Btu (mean) | 19166calIT |
| 77.000Btu (mean) | 19419calIT |
| 78.000Btu (mean) | 19671calIT |
| 79.000Btu (mean) | 19923calIT |