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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 (15.0°C) is the energy required to heat 1 avoirdupois pound of liquid water from 14.5 °C to 15.5°C at a pressure of one atmosphere and equates to 1054.804 J
| -20.000Calorie (Kilogram,thermoc.) | -79.332Btu (15.0 °C) |
| -19.000Calorie (Kilogram,thermoc.) | -75.366Btu (15.0 °C) |
| -18.000Calorie (Kilogram,thermoc.) | -71.399Btu (15.0 °C) |
| -17.000Calorie (Kilogram,thermoc.) | -67.432Btu (15.0 °C) |
| -16.000Calorie (Kilogram,thermoc.) | -63.466Btu (15.0 °C) |
| -15.000Calorie (Kilogram,thermoc.) | -59.499Btu (15.0 °C) |
| -14.000Calorie (Kilogram,thermoc.) | -55.533Btu (15.0 °C) |
| -13.000Calorie (Kilogram,thermoc.) | -51.566Btu (15.0 °C) |
| -12.000Calorie (Kilogram,thermoc.) | -47.599Btu (15.0 °C) |
| -11.000Calorie (Kilogram,thermoc.) | -43.633Btu (15.0 °C) |
| -10.000Calorie (Kilogram,thermoc.) | -39.666Btu (15.0 °C) |
| -9.0000Calorie (Kilogram,thermoc.) | -35.700Btu (15.0 °C) |
| -8.0000Calorie (Kilogram,thermoc.) | -31.733Btu (15.0 °C) |
| -7.0000Calorie (Kilogram,thermoc.) | -27.766Btu (15.0 °C) |
| -6.0000Calorie (Kilogram,thermoc.) | -23.800Btu (15.0 °C) |
| -5.0000Calorie (Kilogram,thermoc.) | -19.833Btu (15.0 °C) |
| -4.0000Calorie (Kilogram,thermoc.) | -15.866Btu (15.0 °C) |
| -3.0000Calorie (Kilogram,thermoc.) | -11.900Btu (15.0 °C) |
| -2.0000Calorie (Kilogram,thermoc.) | -7.9332Btu (15.0 °C) |
| -1.0000Calorie (Kilogram,thermoc.) | -3.9666Btu (15.0 °C) |
| Calories (Kilogram,thermoc.) | Btu (15°C) |
|---|---|
| 0.0000Calorie (Kilogram,thermoc.) | 0.0000Btu (15.0 °C) |
| 1.0000Calorie (Kilogram,thermoc.) | 3.9666Btu (15.0 °C) |
| 2.0000Calorie (Kilogram,thermoc.) | 7.9332Btu (15.0 °C) |
| 3.0000Calorie (Kilogram,thermoc.) | 11.900Btu (15.0 °C) |
| 4.0000Calorie (Kilogram,thermoc.) | 15.866Btu (15.0 °C) |
| 5.0000Calorie (Kilogram,thermoc.) | 19.833Btu (15.0 °C) |
| 6.0000Calorie (Kilogram,thermoc.) | 23.800Btu (15.0 °C) |
| 7.0000Calorie (Kilogram,thermoc.) | 27.766Btu (15.0 °C) |
| 8.0000Calorie (Kilogram,thermoc.) | 31.733Btu (15.0 °C) |
| 9.0000Calorie (Kilogram,thermoc.) | 35.700Btu (15.0 °C) |
| 10.000Calorie (Kilogram,thermoc.) | 39.666Btu (15.0 °C) |
| 11.000Calorie (Kilogram,thermoc.) | 43.633Btu (15.0 °C) |
| 12.000Calorie (Kilogram,thermoc.) | 47.599Btu (15.0 °C) |
| 13.000Calorie (Kilogram,thermoc.) | 51.566Btu (15.0 °C) |
| 14.000Calorie (Kilogram,thermoc.) | 55.533Btu (15.0 °C) |
| 15.000Calorie (Kilogram,thermoc.) | 59.499Btu (15.0 °C) |
| 16.000Calorie (Kilogram,thermoc.) | 63.466Btu (15.0 °C) |
| 17.000Calorie (Kilogram,thermoc.) | 67.432Btu (15.0 °C) |
| 18.000Calorie (Kilogram,thermoc.) | 71.399Btu (15.0 °C) |
| 19.000Calorie (Kilogram,thermoc.) | 75.366Btu (15.0 °C) |
| Calories (Kilogram,thermoc.) | Btu (15°C) |
|---|---|
| 20.000Calorie (Kilogram,thermoc.) | 79.332Btu (15.0 °C) |
| 21.000Calorie (Kilogram,thermoc.) | 83.299Btu (15.0 °C) |
| 22.000Calorie (Kilogram,thermoc.) | 87.266Btu (15.0 °C) |
| 23.000Calorie (Kilogram,thermoc.) | 91.232Btu (15.0 °C) |
| 24.000Calorie (Kilogram,thermoc.) | 95.199Btu (15.0 °C) |
| 25.000Calorie (Kilogram,thermoc.) | 99.165Btu (15.0 °C) |
| 26.000Calorie (Kilogram,thermoc.) | 103.13Btu (15.0 °C) |
| 27.000Calorie (Kilogram,thermoc.) | 107.10Btu (15.0 °C) |
| 28.000Calorie (Kilogram,thermoc.) | 111.07Btu (15.0 °C) |
| 29.000Calorie (Kilogram,thermoc.) | 115.03Btu (15.0 °C) |
| 30.000Calorie (Kilogram,thermoc.) | 119.00Btu (15.0 °C) |
| 31.000Calorie (Kilogram,thermoc.) | 122.97Btu (15.0 °C) |
| 32.000Calorie (Kilogram,thermoc.) | 126.93Btu (15.0 °C) |
| 33.000Calorie (Kilogram,thermoc.) | 130.90Btu (15.0 °C) |
| 34.000Calorie (Kilogram,thermoc.) | 134.86Btu (15.0 °C) |
| 35.000Calorie (Kilogram,thermoc.) | 138.83Btu (15.0 °C) |
| 36.000Calorie (Kilogram,thermoc.) | 142.80Btu (15.0 °C) |
| 37.000Calorie (Kilogram,thermoc.) | 146.76Btu (15.0 °C) |
| 38.000Calorie (Kilogram,thermoc.) | 150.73Btu (15.0 °C) |
| 39.000Calorie (Kilogram,thermoc.) | 154.70Btu (15.0 °C) |
| Calories (Kilogram,thermoc.) | Btu (15°C) |
|---|---|
| 40.000Calorie (Kilogram,thermoc.) | 158.66Btu (15.0 °C) |
| 41.000Calorie (Kilogram,thermoc.) | 162.63Btu (15.0 °C) |
| 42.000Calorie (Kilogram,thermoc.) | 166.60Btu (15.0 °C) |
| 43.000Calorie (Kilogram,thermoc.) | 170.56Btu (15.0 °C) |
| 44.000Calorie (Kilogram,thermoc.) | 174.53Btu (15.0 °C) |
| 45.000Calorie (Kilogram,thermoc.) | 178.50Btu (15.0 °C) |
| 46.000Calorie (Kilogram,thermoc.) | 182.46Btu (15.0 °C) |
| 47.000Calorie (Kilogram,thermoc.) | 186.43Btu (15.0 °C) |
| 48.000Calorie (Kilogram,thermoc.) | 190.40Btu (15.0 °C) |
| 49.000Calorie (Kilogram,thermoc.) | 194.36Btu (15.0 °C) |
| 50.000Calorie (Kilogram,thermoc.) | 198.33Btu (15.0 °C) |
| 51.000Calorie (Kilogram,thermoc.) | 202.30Btu (15.0 °C) |
| 52.000Calorie (Kilogram,thermoc.) | 206.26Btu (15.0 °C) |
| 53.000Calorie (Kilogram,thermoc.) | 210.23Btu (15.0 °C) |
| 54.000Calorie (Kilogram,thermoc.) | 214.20Btu (15.0 °C) |
| 55.000Calorie (Kilogram,thermoc.) | 218.16Btu (15.0 °C) |
| 56.000Calorie (Kilogram,thermoc.) | 222.13Btu (15.0 °C) |
| 57.000Calorie (Kilogram,thermoc.) | 226.10Btu (15.0 °C) |
| 58.000Calorie (Kilogram,thermoc.) | 230.06Btu (15.0 °C) |
| 59.000Calorie (Kilogram,thermoc.) | 234.03Btu (15.0 °C) |
| 60.000Calorie (Kilogram,thermoc.) | 238.00Btu (15.0 °C) |
| 61.000Calorie (Kilogram,thermoc.) | 241.96Btu (15.0 °C) |
| 62.000Calorie (Kilogram,thermoc.) | 245.93Btu (15.0 °C) |
| 63.000Calorie (Kilogram,thermoc.) | 249.90Btu (15.0 °C) |
| 64.000Calorie (Kilogram,thermoc.) | 253.86Btu (15.0 °C) |
| 65.000Calorie (Kilogram,thermoc.) | 257.83Btu (15.0 °C) |
| 66.000Calorie (Kilogram,thermoc.) | 261.80Btu (15.0 °C) |
| 67.000Calorie (Kilogram,thermoc.) | 265.76Btu (15.0 °C) |
| 68.000Calorie (Kilogram,thermoc.) | 269.73Btu (15.0 °C) |
| 69.000Calorie (Kilogram,thermoc.) | 273.70Btu (15.0 °C) |
| 70.000Calorie (Kilogram,thermoc.) | 277.66Btu (15.0 °C) |
| 71.000Calorie (Kilogram,thermoc.) | 281.63Btu (15.0 °C) |
| 72.000Calorie (Kilogram,thermoc.) | 285.60Btu (15.0 °C) |
| 73.000Calorie (Kilogram,thermoc.) | 289.56Btu (15.0 °C) |
| 74.000Calorie (Kilogram,thermoc.) | 293.53Btu (15.0 °C) |
| 75.000Calorie (Kilogram,thermoc.) | 297.50Btu (15.0 °C) |
| 76.000Calorie (Kilogram,thermoc.) | 301.46Btu (15.0 °C) |
| 77.000Calorie (Kilogram,thermoc.) | 305.43Btu (15.0 °C) |
| 78.000Calorie (Kilogram,thermoc.) | 309.40Btu (15.0 °C) |
| 79.000Calorie (Kilogram,thermoc.) | 313.36Btu (15.0 °C) |