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Conversion of temperatures and conversion  formula
Fahrenheit F to Celsius C (centigrade ) and to kelvin, Rankine and Réaumur R

Enter the known temperature on the appropriate line.
The other boxes will show the conversions.
You don't need a calculate bar.

 °Fahrenheit °Celsius   kelvin °Rankine °Réaumur    reset

Attention: Do not re-enter the exact number of a calculated answer.

At 0 K according to -273,15°C the thermal energy and thus the oscillatory motion of the electrons and particles
come to stop. Therefore there is no lower temperature than -273,15°C, even if that can be entered here.

The degree centigrade (°C) was officially renamed Celsius in 1948 to avoid confusion
with the angular measure known as the centigrade (one hundredth of a grade).

Fahrenheit    Celsius   feels
90s 32 - 37 really hot
80s 26 - 32 warm
70s 21 - 26  comfortable
60s 15 - 21 mild
50s 10 - 15 cool
40s 5 - 10 chilly

All temperature conversion formulas and equations

 Conversion from to Formula 9/5 = 1.8     9/4 = 2.25     10/8 = 1.25 Fahrenheit Celsius C = (F − 32) / 1.8 Fahrenheit kelvin K = (F + 459.67) / 1.8 Fahrenheit Rankine Ra =  F + 459.67 Fahrenheit Réaumur Re = (F − 32) / 2.25 Celsius Fahrenheit F =  C × 1.8 + 32 Celsius kelvin K = C + 273.15 Celsius Rankine Ra =  C × 1.8 + 32 + 459.67 Celsius Réaumur Re =  C × 0.8 kelvin Celsius C = K − 273.15 kelvin Fahrenheit F = K × 1.8 − 459.67 kelvin Rankine Ra = K × 1.8 kelvin Réaumur R = (K − 273.15) × 0.8 Rankine Celsius C = (Ra − 32 − 459.67) / 1.8 Rankine Fahrenheit F =  Ra − 459.67 Rankine kelvin K =  Ra / 1.8 Rankine Réaumur Re = (Ra - 32 - 459.67) / 2.25 Réaumur Celsius C =  Re × 1.25 Réaumur Fahrenheit F =  Re × 2.25 + 32 Réaumur kelvin K =  Re × 1.25 + 273.15 Réaumur Rankine Ra =  Re × 2.25 + 32 + 459.67

Temperature conversion chart - table of comparison

 Celsius °C Kelvin K Fahrenheit °F Rankine °Ra Réaumur °Ré 125 398.15 257 716.67 100 100 373.15 212 671,67 80 37.78 310.93 100 559.67 30.22 37 310.15 98.6 558.67 29.6 30 303.15 86 545.67 24 25 298.15 77 536.67 20 20 293.15 68 527.67 16 15 288.15 59 518.67 12 10 283.15 50 509.67 8 5 278.15 41 500.67 4 0 273.15 32 491.67 0 −10 263.15 14 473.67 −8 −17.78 255.37 0 459.67 −14.22 −273.15 0 −459.67 0 −218.52

Fahrenheit to Celsius Conversion Table

 °F °C 1.0 -17.2 2.0 -16.7 3.0 -16.1 4.0 -15.6 5.0 -15.0 6.0 -14.4 7.0 -13.9 8.0 -13.3 9.0 -12.8 10.0 -12.2 11.0 -11.7 12.0 -11.1 13.0 -10.6 14.0 -10.0 15.0 -9.4 16.0 -8.9 17.0 -8.3 18.0 -7.8 19.0 -7.2 20.0 -6.7 21.0 -6.1 22.0 -5.6 23.0 -5.0 24.0 -4.4 25.0 -3.9 26.0 -3.3 27.0 -2.8 28.0 -2.2 29.0 -1.7 30.0 -1.1 31.0 -0.6 32.0 0.0 33.0 0.6 34.0 1.1 35.0 1.7 36.0 2.2 37.0 2.8 38.0 3.3 39.0 3.9 40.0 4.4 41.0 5.0 42.0 5.6 43.0 6.1 44.0 6.7 45.0 7.2 46.0 7.8 47.0 8.3 48.0 8.9 49.0 9.4 50.0 10.0 51.0 10.6 52.0 11.1 53.0 11.7 54.0 12.2 55.0 12.8 56.0 13.3 57.0 13.9 58.0 14.4 59.0 15.0 60.0 15.6 61.0 16.1 62.0 16.7 63.0 17.2 64.0 17.8 65.0 18.3 66.0 18.9 67.0 19.4 68.0 20.0 69.0 20.6 70.0 21.1 71.0 21.7 72.0 22.2 73.0 22.8 74.0 23.3 75.0 23.9 76.0 24.4 77.0 25.0 78.0 25.6 79.0 26.1 80.0 26.7 81.0 27.2 82.0 27.8 83.0 28.3 84.0 28.9 85.0 29.4 86.0 30.0 87.0 30.6 88.0 31.1 89.0 31.7 90.0 32.2 91.0 32.8 92.0 33.3 93.0 33.9 94.0 34.4 95.0 35.0 96.0 35.6 97.0 36.1 98.0 36.7 99.0 37.2 100.0 37.8
 °F °C 101.0 38.3 102.0 38.9 103.0 39.4 104.0 40.0 105.0 40.6 106.0 41.1 107.0 41.7 108.0 42.2 109.0 42.8 110.0 43.3 111.0 43.9 112.0 44.4 113.0 45.0 114.0 45.6 115.0 46.1 116.0 46.7 117.0 47.2 118.0 47.8 119.0 48.3 120.0 48.9 121.0 49.4 122.0 50.0 123.0 50.6 124.0 51.1 125.0 51.7 126.0 52.2 127.0 52.8 128.0 53.3 129.0 53.9 130.0 54.4 131.0 55.0 132.0 55.6 133.0 56.1 134.0 56.7 135.0 57.2 136.0 57.8 137.0 58.3 138.0 58.9 139.0 59.4 140.0 60.0 141.0 60.6 142.0 61.1 143.0 61.7 144.0 62.2 145.0 62.8 146.0 63.3 147.0 63.9 148.0 64.4 149.0 65.0 150.0 65.6 151.0 66.1 152.0 66.7 153.0 67.2 154.0 67.8 155.0 68.3 156.0 68.9 157.0 69.4 158.0 70.0 159.0 70.6 160.0 71.1 161.0 71.7 162.0 72.2 163.0 72.8 164.0 73.3 165.0 73.9 166.0 74.4 167.0 75.0 168.0 75.6 169.0 76.1 170.0 76.7 171.0 77.2 172.0 77.8 173.0 78.3 174.0 78.9 175.0 79.4 176.0 80.0 177.0 80.6 178.0 81.1 179.0 81.7 180.0 82.2 181.0 82.8 182.0 83.3 183.0 83.9 184.0 84.4 185.0 85.0 186.0 85.6 187.0 86.1 188.0 86.7 189.0 87.2 190.0 87.8 191.0 88.3 192.0 88.9 193.0 89.4 194.0 90.0 195.0 90.6 196.0 91.1 197.0 91.7 198.0 92.2 199.0 92.8 200.0 93.3
 °F °C 201.0 93.9 202.0 94.4 203.0 95.0 204.0 95.6 205.0 96.1 206.0 96.7 207.0 97.2 208.0 97.8 209.0 98.3 210.0 98.9 211.0 99.4 212.0 100.0 213.0 100.6 214.0 101.1 215.0 101.7 216.0 102.2 217.0 102.8 218.0 103.3 219.0 103.9 220.0 104.4 221.0 105.0 222.0 105.6 223.0 106.1 224.0 106.7 225.0 107.2 226.0 107.8 227.0 108.3 228.0 108.9 229.0 109.4 230.0 110.0 231.0 110.6 232.0 111.1 233.0 111.7 234.0 112.2 235.0 112.8 236.0 113.3 237.0 113.9 238.0 114.4 239.0 115.0 240.0 115.6 241.0 116.1 242.0 116.7 243.0 117.2 244.0 117.8 245.0 118.3 246.0 118.9 247.0 119.4 248.0 120.0 249.0 120.6 250.0 121.1 251.0 121.7 252.0 122.2 253.0 122.8 254.0 123.3 255.0 123.9 256.0 124.4 257.0 125.0 258.0 125.6 259.0 126.1 260.0 126.7 261.0 127.2 262.0 127.8 263.0 128.3 264.0 128.9 265.0 129.4 266.0 130.0 267.0 130.6 268.0 131.1 269.0 131.7 270.0 132.2 271.0 132.8 272.0 133.3 273.0 133.9 274.0 134.4 275.0 135.0 276.0 135.6 277.0 136.1 278.0 136.7 279.0 137.2 280.0 137.8 281.0 138.3 282.0 138.9 283.0 139.4 284.0 140.0 285.0 140.6 286.0 141.1 287.0 141.7 288.0 142.2 289.0 142.8 290.0 143.3 291.0 143.9 292.0 144.4 293.0 145.0 294.0 145.6 295.0 146.1 296.0 146.7 297.0 147.2 298.0 147.8 299.0 148.3 300.0 148.9
 °F °C 301.0 149.4 302.0 150.0 303.0 150.6 304.0 151.1 305.0 151.7 306.0 152.2 307.0 152.8 308.0 153.3 309.0 153.9 310.0 154.4 311.0 155.0 312.0 155.6 313.0 156.1 314.0 156.7 315.0 157.2 316.0 157.8 317.0 158.3 318.0 158.9 319.0 159.4 320.0 160.0 321.0 160.6 322.0 161.1 323.0 161.7 324.0 162.2 325.0 162.8 326.0 163.3 327.0 163.9 328.0 164.4 329.0 165.0 330.0 165.6 331.0 166.1 332.0 166.7 333.0 167.2 334.0 167.8 335.0 168.3 336.0 168.9 337.0 169.4 338.0 170.0 339.0 170.6 340.0 171.1 341.0 171.7 342.0 172.2 343.0 172.8 344.0 173.3 345.0 173.9 346.0 174.4 347.0 175.0 348.0 175.6 349.0 176.1 350.0 176.7 351.0 177.2 352.0 177.8 353.0 178.3 354.0 178.9 355.0 179.4 356.0 180.0 357.0 180.6 358.0 181.1 359.0 181.7 360.0 182.2 361.0 182.8 362.0 183.3 363.0 183.9 364.0 184.4 365.0 185.0 366.0 185.6 367.0 186.1 368.0 186.7 369.0 187.2 370.0 187.8 371.0 188.3 372.0 188.9 373.0 189.4 374.0 190.0 375.0 190.6 376.0 191.1 377.0 191.7 378.0 192.2 379.0 192.8 380.0 193.3 381.0 193.9 382.0 194.4 383.0 195.0 384.0 195.6 385.0 196.1 386.0 196.7 387.0 197.2 388.0 197.8 389.0 198.3 390.0 198.9 391.0 199.4 392.0 200.0 393.0 200.6 394.0 201.1 395.0 201.7 396.0 202.2 397.0 202.8 398.0 203.3 399.0 203.9 400.0 204.4
 °F °C 401.0 205.0 402.0 205.6 403.0 206.1 404.0 206.7 405.0 207.2 406.0 207.8 407.0 208.3 408.0 208.9 409.0 209.4 410.0 210.0 411.0 210.6 412.0 211.1 413.0 211.7 414.0 212.2 415.0 212.8 416.0 213.3 417.0 213.9 418.0 214.4 419.0 215.0 420.0 215.6 421.0 216.1 422.0 216.7 423.0 217.2 424.0 217.8 425.0 218.3 426.0 218.9 427.0 219.4 428.0 220.0 429.0 220.6 430.0 221.1 431.0 221.7 432.0 222.2 433.0 222.8 434.0 223.3 435.0 223.9 436.0 224.4 437.0 225.0 438.0 225.6 439.0 226.1 440.0 226.7 441.0 227.2 442.0 227.8 443.0 228.3 444.0 228.9 445.0 229.4 446.0 230.0 447.0 230.6 448.0 231.1 449.0 231.7 450.0 232.2 451.0 232.8 452.0 233.3 453.0 233.9 454.0 234.4 455.0 235.0 456.0 235.6 457.0 236.1 458.0 236.7 459.0 237.2 460.0 237.8 461.0 238.3 462.0 238.9 463.0 239.4 464.0 240.0 465.0 240.6 466.0 241.1 467.0 241.7 468.0 242.2 469.0 242.8 470.0 243.3 471.0 243.9 472.0 244.4 473.0 245.0 474.0 245.6 475.0 246.1 476.0 246.7 477.0 247.2 478.0 247.8 479.0 248.3 480.0 248.9 481.0 249.4 482.0 250.0 483.0 250.6 484.0 251.1 485.0 251.7 486.0 252.2 487.0 252.8 488.0 253.3 489.0 253.9 490.0 254.4 491.0 255.0 492.0 255.6 493.0 256.1 494.0 256.7 495.0 257.2 496.0 257.8 497.0 258.3 498.0 258.9 499.0 259.4 500.0 260.0

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