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
One Btu (I.T., pre-1956) equates to 1055.04 J
| -20.000Btu (mean) | -20.016Btu (I.T., pre-1956) |
| -19.000Btu (mean) | -19.015Btu (I.T., pre-1956) |
| -18.000Btu (mean) | -18.014Btu (I.T., pre-1956) |
| -17.000Btu (mean) | -17.013Btu (I.T., pre-1956) |
| -16.000Btu (mean) | -16.013Btu (I.T., pre-1956) |
| -15.000Btu (mean) | -15.012Btu (I.T., pre-1956) |
| -14.000Btu (mean) | -14.011Btu (I.T., pre-1956) |
| -13.000Btu (mean) | -13.010Btu (I.T., pre-1956) |
| -12.000Btu (mean) | -12.009Btu (I.T., pre-1956) |
| -11.000Btu (mean) | -11.009Btu (I.T., pre-1956) |
| -10.000Btu (mean) | -10.008Btu (I.T., pre-1956) |
| -9.0000Btu (mean) | -9.0071Btu (I.T., pre-1956) |
| -8.0000Btu (mean) | -8.0063Btu (I.T., pre-1956) |
| -7.0000Btu (mean) | -7.0055Btu (I.T., pre-1956) |
| -6.0000Btu (mean) | -6.0047Btu (I.T., pre-1956) |
| -5.0000Btu (mean) | -5.0039Btu (I.T., pre-1956) |
| -4.0000Btu (mean) | -4.0031Btu (I.T., pre-1956) |
| -3.0000Btu (mean) | -3.0024Btu (I.T., pre-1956) |
| -2.0000Btu (mean) | -2.0016Btu (I.T., pre-1956) |
| -1.0000Btu (mean) | -1.0008Btu (I.T., pre-1956) |
| Btu (mean) | Btu (I.T., pre-1956) |
|---|---|
| 0.0000Btu (mean) | 0.0000Btu (I.T., pre-1956) |
| 1.0000Btu (mean) | 1.0008Btu (I.T., pre-1956) |
| 2.0000Btu (mean) | 2.0016Btu (I.T., pre-1956) |
| 3.0000Btu (mean) | 3.0024Btu (I.T., pre-1956) |
| 4.0000Btu (mean) | 4.0031Btu (I.T., pre-1956) |
| 5.0000Btu (mean) | 5.0039Btu (I.T., pre-1956) |
| 6.0000Btu (mean) | 6.0047Btu (I.T., pre-1956) |
| 7.0000Btu (mean) | 7.0055Btu (I.T., pre-1956) |
| 8.0000Btu (mean) | 8.0063Btu (I.T., pre-1956) |
| 9.0000Btu (mean) | 9.0071Btu (I.T., pre-1956) |
| 10.000Btu (mean) | 10.008Btu (I.T., pre-1956) |
| 11.000Btu (mean) | 11.009Btu (I.T., pre-1956) |
| 12.000Btu (mean) | 12.009Btu (I.T., pre-1956) |
| 13.000Btu (mean) | 13.010Btu (I.T., pre-1956) |
| 14.000Btu (mean) | 14.011Btu (I.T., pre-1956) |
| 15.000Btu (mean) | 15.012Btu (I.T., pre-1956) |
| 16.000Btu (mean) | 16.013Btu (I.T., pre-1956) |
| 17.000Btu (mean) | 17.013Btu (I.T., pre-1956) |
| 18.000Btu (mean) | 18.014Btu (I.T., pre-1956) |
| 19.000Btu (mean) | 19.015Btu (I.T., pre-1956) |
| Btu (mean) | Btu (I.T., pre-1956) |
|---|---|
| 20.000Btu (mean) | 20.016Btu (I.T., pre-1956) |
| 21.000Btu (mean) | 21.017Btu (I.T., pre-1956) |
| 22.000Btu (mean) | 22.017Btu (I.T., pre-1956) |
| 23.000Btu (mean) | 23.018Btu (I.T., pre-1956) |
| 24.000Btu (mean) | 24.019Btu (I.T., pre-1956) |
| 25.000Btu (mean) | 25.020Btu (I.T., pre-1956) |
| 26.000Btu (mean) | 26.020Btu (I.T., pre-1956) |
| 27.000Btu (mean) | 27.021Btu (I.T., pre-1956) |
| 28.000Btu (mean) | 28.022Btu (I.T., pre-1956) |
| 29.000Btu (mean) | 29.023Btu (I.T., pre-1956) |
| 30.000Btu (mean) | 30.024Btu (I.T., pre-1956) |
| 31.000Btu (mean) | 31.024Btu (I.T., pre-1956) |
| 32.000Btu (mean) | 32.025Btu (I.T., pre-1956) |
| 33.000Btu (mean) | 33.026Btu (I.T., pre-1956) |
| 34.000Btu (mean) | 34.027Btu (I.T., pre-1956) |
| 35.000Btu (mean) | 35.028Btu (I.T., pre-1956) |
| 36.000Btu (mean) | 36.028Btu (I.T., pre-1956) |
| 37.000Btu (mean) | 37.029Btu (I.T., pre-1956) |
| 38.000Btu (mean) | 38.030Btu (I.T., pre-1956) |
| 39.000Btu (mean) | 39.031Btu (I.T., pre-1956) |
| Btu (mean) | Btu (I.T., pre-1956) |
|---|---|
| 40.000Btu (mean) | 40.031Btu (I.T., pre-1956) |
| 41.000Btu (mean) | 41.032Btu (I.T., pre-1956) |
| 42.000Btu (mean) | 42.033Btu (I.T., pre-1956) |
| 43.000Btu (mean) | 43.034Btu (I.T., pre-1956) |
| 44.000Btu (mean) | 44.035Btu (I.T., pre-1956) |
| 45.000Btu (mean) | 45.035Btu (I.T., pre-1956) |
| 46.000Btu (mean) | 46.036Btu (I.T., pre-1956) |
| 47.000Btu (mean) | 47.037Btu (I.T., pre-1956) |
| 48.000Btu (mean) | 48.038Btu (I.T., pre-1956) |
| 49.000Btu (mean) | 49.039Btu (I.T., pre-1956) |
| 50.000Btu (mean) | 50.039Btu (I.T., pre-1956) |
| 51.000Btu (mean) | 51.040Btu (I.T., pre-1956) |
| 52.000Btu (mean) | 52.041Btu (I.T., pre-1956) |
| 53.000Btu (mean) | 53.042Btu (I.T., pre-1956) |
| 54.000Btu (mean) | 54.042Btu (I.T., pre-1956) |
| 55.000Btu (mean) | 55.043Btu (I.T., pre-1956) |
| 56.000Btu (mean) | 56.044Btu (I.T., pre-1956) |
| 57.000Btu (mean) | 57.045Btu (I.T., pre-1956) |
| 58.000Btu (mean) | 58.046Btu (I.T., pre-1956) |
| 59.000Btu (mean) | 59.046Btu (I.T., pre-1956) |
| 60.000Btu (mean) | 60.047Btu (I.T., pre-1956) |
| 61.000Btu (mean) | 61.048Btu (I.T., pre-1956) |
| 62.000Btu (mean) | 62.049Btu (I.T., pre-1956) |
| 63.000Btu (mean) | 63.050Btu (I.T., pre-1956) |
| 64.000Btu (mean) | 64.050Btu (I.T., pre-1956) |
| 65.000Btu (mean) | 65.051Btu (I.T., pre-1956) |
| 66.000Btu (mean) | 66.052Btu (I.T., pre-1956) |
| 67.000Btu (mean) | 67.053Btu (I.T., pre-1956) |
| 68.000Btu (mean) | 68.053Btu (I.T., pre-1956) |
| 69.000Btu (mean) | 69.054Btu (I.T., pre-1956) |
| 70.000Btu (mean) | 70.055Btu (I.T., pre-1956) |
| 71.000Btu (mean) | 71.056Btu (I.T., pre-1956) |
| 72.000Btu (mean) | 72.057Btu (I.T., pre-1956) |
| 73.000Btu (mean) | 73.057Btu (I.T., pre-1956) |
| 74.000Btu (mean) | 74.058Btu (I.T., pre-1956) |
| 75.000Btu (mean) | 75.059Btu (I.T., pre-1956) |
| 76.000Btu (mean) | 76.060Btu (I.T., pre-1956) |
| 77.000Btu (mean) | 77.061Btu (I.T., pre-1956) |
| 78.000Btu (mean) | 78.061Btu (I.T., pre-1956) |
| 79.000Btu (mean) | 79.062Btu (I.T., pre-1956) |