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The thermochemical calorie was defined in 1930 by Frederick Rossini as 4.1833 joules. The change to absolute electrical units in 1948 involved redefining the thermochemical calorie as 4.184 joules (in order to keep the same quantity of energy represented by it). The thermochemical kilogram calorie is equal to 1,000 times that value - 4,184 J.
One BTU is defined as the energy needed to warm 1 avoirdupois pound of liquid water by 1 degree Fahrenheit at one atmosphere. One Btu (15.8°C, Canada) equates to 1054.615 J
| -20.000Calorie (Kilogram,thermoc.) | -79.346Btu (15.8°C, Canada) |
| -19.000Calorie (Kilogram,thermoc.) | -75.379Btu (15.8°C, Canada) |
| -18.000Calorie (Kilogram,thermoc.) | -71.412Btu (15.8°C, Canada) |
| -17.000Calorie (Kilogram,thermoc.) | -67.445Btu (15.8°C, Canada) |
| -16.000Calorie (Kilogram,thermoc.) | -63.477Btu (15.8°C, Canada) |
| -15.000Calorie (Kilogram,thermoc.) | -59.510Btu (15.8°C, Canada) |
| -14.000Calorie (Kilogram,thermoc.) | -55.543Btu (15.8°C, Canada) |
| -13.000Calorie (Kilogram,thermoc.) | -51.575Btu (15.8°C, Canada) |
| -12.000Calorie (Kilogram,thermoc.) | -47.608Btu (15.8°C, Canada) |
| -11.000Calorie (Kilogram,thermoc.) | -43.641Btu (15.8°C, Canada) |
| -10.000Calorie (Kilogram,thermoc.) | -39.673Btu (15.8°C, Canada) |
| -9.0000Calorie (Kilogram,thermoc.) | -35.706Btu (15.8°C, Canada) |
| -8.0000Calorie (Kilogram,thermoc.) | -31.739Btu (15.8°C, Canada) |
| -7.0000Calorie (Kilogram,thermoc.) | -27.771Btu (15.8°C, Canada) |
| -6.0000Calorie (Kilogram,thermoc.) | -23.804Btu (15.8°C, Canada) |
| -5.0000Calorie (Kilogram,thermoc.) | -19.837Btu (15.8°C, Canada) |
| -4.0000Calorie (Kilogram,thermoc.) | -15.869Btu (15.8°C, Canada) |
| -3.0000Calorie (Kilogram,thermoc.) | -11.902Btu (15.8°C, Canada) |
| -2.0000Calorie (Kilogram,thermoc.) | -7.9346Btu (15.8°C, Canada) |
| -1.0000Calorie (Kilogram,thermoc.) | -3.9673Btu (15.8°C, Canada) |
| Calories (Kilogram,thermoc.) | Btu (15.8°C, Canada) |
|---|---|
| 0.0000Calorie (Kilogram,thermoc.) | 0.0000Btu (15.8°C, Canada) |
| 1.0000Calorie (Kilogram,thermoc.) | 3.9673Btu (15.8°C, Canada) |
| 2.0000Calorie (Kilogram,thermoc.) | 7.9346Btu (15.8°C, Canada) |
| 3.0000Calorie (Kilogram,thermoc.) | 11.902Btu (15.8°C, Canada) |
| 4.0000Calorie (Kilogram,thermoc.) | 15.869Btu (15.8°C, Canada) |
| 5.0000Calorie (Kilogram,thermoc.) | 19.837Btu (15.8°C, Canada) |
| 6.0000Calorie (Kilogram,thermoc.) | 23.804Btu (15.8°C, Canada) |
| 7.0000Calorie (Kilogram,thermoc.) | 27.771Btu (15.8°C, Canada) |
| 8.0000Calorie (Kilogram,thermoc.) | 31.739Btu (15.8°C, Canada) |
| 9.0000Calorie (Kilogram,thermoc.) | 35.706Btu (15.8°C, Canada) |
| 10.000Calorie (Kilogram,thermoc.) | 39.673Btu (15.8°C, Canada) |
| 11.000Calorie (Kilogram,thermoc.) | 43.641Btu (15.8°C, Canada) |
| 12.000Calorie (Kilogram,thermoc.) | 47.608Btu (15.8°C, Canada) |
| 13.000Calorie (Kilogram,thermoc.) | 51.575Btu (15.8°C, Canada) |
| 14.000Calorie (Kilogram,thermoc.) | 55.543Btu (15.8°C, Canada) |
| 15.000Calorie (Kilogram,thermoc.) | 59.510Btu (15.8°C, Canada) |
| 16.000Calorie (Kilogram,thermoc.) | 63.477Btu (15.8°C, Canada) |
| 17.000Calorie (Kilogram,thermoc.) | 67.445Btu (15.8°C, Canada) |
| 18.000Calorie (Kilogram,thermoc.) | 71.412Btu (15.8°C, Canada) |
| 19.000Calorie (Kilogram,thermoc.) | 75.379Btu (15.8°C, Canada) |
| Calories (Kilogram,thermoc.) | Btu (15.8°C, Canada) |
|---|---|
| 20.000Calorie (Kilogram,thermoc.) | 79.346Btu (15.8°C, Canada) |
| 21.000Calorie (Kilogram,thermoc.) | 83.314Btu (15.8°C, Canada) |
| 22.000Calorie (Kilogram,thermoc.) | 87.281Btu (15.8°C, Canada) |
| 23.000Calorie (Kilogram,thermoc.) | 91.248Btu (15.8°C, Canada) |
| 24.000Calorie (Kilogram,thermoc.) | 95.216Btu (15.8°C, Canada) |
| 25.000Calorie (Kilogram,thermoc.) | 99.183Btu (15.8°C, Canada) |
| 26.000Calorie (Kilogram,thermoc.) | 103.15Btu (15.8°C, Canada) |
| 27.000Calorie (Kilogram,thermoc.) | 107.12Btu (15.8°C, Canada) |
| 28.000Calorie (Kilogram,thermoc.) | 111.09Btu (15.8°C, Canada) |
| 29.000Calorie (Kilogram,thermoc.) | 115.05Btu (15.8°C, Canada) |
| 30.000Calorie (Kilogram,thermoc.) | 119.02Btu (15.8°C, Canada) |
| 31.000Calorie (Kilogram,thermoc.) | 122.99Btu (15.8°C, Canada) |
| 32.000Calorie (Kilogram,thermoc.) | 126.95Btu (15.8°C, Canada) |
| 33.000Calorie (Kilogram,thermoc.) | 130.92Btu (15.8°C, Canada) |
| 34.000Calorie (Kilogram,thermoc.) | 134.89Btu (15.8°C, Canada) |
| 35.000Calorie (Kilogram,thermoc.) | 138.86Btu (15.8°C, Canada) |
| 36.000Calorie (Kilogram,thermoc.) | 142.82Btu (15.8°C, Canada) |
| 37.000Calorie (Kilogram,thermoc.) | 146.79Btu (15.8°C, Canada) |
| 38.000Calorie (Kilogram,thermoc.) | 150.76Btu (15.8°C, Canada) |
| 39.000Calorie (Kilogram,thermoc.) | 154.73Btu (15.8°C, Canada) |
| Calories (Kilogram,thermoc.) | Btu (15.8°C, Canada) |
|---|---|
| 40.000Calorie (Kilogram,thermoc.) | 158.69Btu (15.8°C, Canada) |
| 41.000Calorie (Kilogram,thermoc.) | 162.66Btu (15.8°C, Canada) |
| 42.000Calorie (Kilogram,thermoc.) | 166.63Btu (15.8°C, Canada) |
| 43.000Calorie (Kilogram,thermoc.) | 170.59Btu (15.8°C, Canada) |
| 44.000Calorie (Kilogram,thermoc.) | 174.56Btu (15.8°C, Canada) |
| 45.000Calorie (Kilogram,thermoc.) | 178.53Btu (15.8°C, Canada) |
| 46.000Calorie (Kilogram,thermoc.) | 182.50Btu (15.8°C, Canada) |
| 47.000Calorie (Kilogram,thermoc.) | 186.46Btu (15.8°C, Canada) |
| 48.000Calorie (Kilogram,thermoc.) | 190.43Btu (15.8°C, Canada) |
| 49.000Calorie (Kilogram,thermoc.) | 194.40Btu (15.8°C, Canada) |
| 50.000Calorie (Kilogram,thermoc.) | 198.37Btu (15.8°C, Canada) |
| 51.000Calorie (Kilogram,thermoc.) | 202.33Btu (15.8°C, Canada) |
| 52.000Calorie (Kilogram,thermoc.) | 206.30Btu (15.8°C, Canada) |
| 53.000Calorie (Kilogram,thermoc.) | 210.27Btu (15.8°C, Canada) |
| 54.000Calorie (Kilogram,thermoc.) | 214.24Btu (15.8°C, Canada) |
| 55.000Calorie (Kilogram,thermoc.) | 218.20Btu (15.8°C, Canada) |
| 56.000Calorie (Kilogram,thermoc.) | 222.17Btu (15.8°C, Canada) |
| 57.000Calorie (Kilogram,thermoc.) | 226.14Btu (15.8°C, Canada) |
| 58.000Calorie (Kilogram,thermoc.) | 230.10Btu (15.8°C, Canada) |
| 59.000Calorie (Kilogram,thermoc.) | 234.07Btu (15.8°C, Canada) |
| 60.000Calorie (Kilogram,thermoc.) | 238.04Btu (15.8°C, Canada) |
| 61.000Calorie (Kilogram,thermoc.) | 242.01Btu (15.8°C, Canada) |
| 62.000Calorie (Kilogram,thermoc.) | 245.97Btu (15.8°C, Canada) |
| 63.000Calorie (Kilogram,thermoc.) | 249.94Btu (15.8°C, Canada) |
| 64.000Calorie (Kilogram,thermoc.) | 253.91Btu (15.8°C, Canada) |
| 65.000Calorie (Kilogram,thermoc.) | 257.88Btu (15.8°C, Canada) |
| 66.000Calorie (Kilogram,thermoc.) | 261.84Btu (15.8°C, Canada) |
| 67.000Calorie (Kilogram,thermoc.) | 265.81Btu (15.8°C, Canada) |
| 68.000Calorie (Kilogram,thermoc.) | 269.78Btu (15.8°C, Canada) |
| 69.000Calorie (Kilogram,thermoc.) | 273.75Btu (15.8°C, Canada) |
| 70.000Calorie (Kilogram,thermoc.) | 277.71Btu (15.8°C, Canada) |
| 71.000Calorie (Kilogram,thermoc.) | 281.68Btu (15.8°C, Canada) |
| 72.000Calorie (Kilogram,thermoc.) | 285.65Btu (15.8°C, Canada) |
| 73.000Calorie (Kilogram,thermoc.) | 289.61Btu (15.8°C, Canada) |
| 74.000Calorie (Kilogram,thermoc.) | 293.58Btu (15.8°C, Canada) |
| 75.000Calorie (Kilogram,thermoc.) | 297.55Btu (15.8°C, Canada) |
| 76.000Calorie (Kilogram,thermoc.) | 301.52Btu (15.8°C, Canada) |
| 77.000Calorie (Kilogram,thermoc.) | 305.48Btu (15.8°C, Canada) |
| 78.000Calorie (Kilogram,thermoc.) | 309.45Btu (15.8°C, Canada) |
| 79.000Calorie (Kilogram,thermoc.) | 313.42Btu (15.8°C, Canada) |