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Contents |
Kelvin
| from Kelvin | to Kelvin | |
|---|---|---|
| Celsius | [°C] = [K] − 273.15 | [K] = [°C] + 273.15 |
| Fahrenheit | [°F] = [K] × 9⁄5 − 459.67 | [K] = ([°F] + 459.67) × 5⁄9 |
| Rankine | [°R] = [K] × 9⁄5 | [K] = [°R] × 5⁄9 |
| Delisle | [°De] = (373.15 − [K]) × 3⁄2 | [K] = 373.15 − [°De] × 2⁄3 |
| Newton | [°N] = ([K] − 273.15) × 33⁄100 | [K] = [°N] × 100⁄33 + 273.15 |
| Réaumur | [°Ré] = ([K] − 273.15) × 4⁄5 | [K] = [°Ré] × 5⁄4 + 273.15 |
| Rømer | [°Rø] = ([K] − 273.15) × 21⁄40 + 7.5 | [K] = ([°Rø] − 7.5) × 40⁄21 + 273.15 |
Celsius (Centigrade)
| from Celsius | to Celsius | |
|---|---|---|
| Fahrenheit | [°F] = [°C] × 9⁄5 + 32 | [°C] = ([°F] − 32) × 5⁄9 |
| Kelvin | [K] = [°C] + 273.15 | [°C] = [K] − 273.15 |
| Rankine | [°R] = ([°C] + 273.15) × 9⁄5 | [°C] = ([°R] − 491.67) × 5⁄9 |
| Delisle | [°De] = (100 − [°C]) × 3⁄2 | [°C] = 100 − [°De] × 2⁄3 |
| Newton | [°N] = [°C] × 33⁄100 | [°C] = [°N] × 100⁄33 |
| Réaumur | [°Ré] = [°C] × 4⁄5 | [°C] = [°Ré] × 5⁄4 |
| Rømer | [°Rø] = [°C] × 21⁄40 + 7.5 | [°C] = ([°Rø] − 7.5) × 40⁄21 |
Fahrenheit
| from Fahrenheit | to Fahrenheit | |
|---|---|---|
| Celsius | [°C] = ([°F] − 32) × 5⁄9 | [°F] = [°C] × 9⁄5 + 32 |
| Kelvin | [K] = ([°F] + 459.67) × 5⁄9 | [°F] = [K] × 9⁄5 − 459.67 |
| Rankine | [°R] = [°F] + 459.67 | [°F] = [°R] − 459.67 |
| Delisle | [°De] = (121 − [°F]) × 5⁄6 | [°F] = 121 − [°De] × 6⁄5 |
| Newton | [°N] = ([°F] − 32) × 11⁄60 | [°F] = [°N] × 60⁄11 + 32 |
| Réaumur | [°Ré] = ([°F] − 32) × 4⁄9 | [°F] = [°Ré] × 9⁄4 + 32 |
| Rømer | [°Rø] = ([°F] − 32) × 7⁄24 + 7.5 | [°F] = ([°Rø] − 7.5) × 24⁄7 + 32 |
Rankine
| from Rankine | to Rankine | |
|---|---|---|
| Celsius | [°C] = ([°R] − 491.67) × 5⁄9 | [°R] = ([°C] + 273.15) × 9⁄5 |
| Fahrenheit | [°F] = [°R] − 459.67 | [°R] = [°F] + 459.67 |
| Kelvin | [K] = [°R] × 5⁄9 | [°R] = [K] × 9⁄5 |
| Delisle | [°De] = (671.67 − [°R]) × 6⁄5 | [°R] = 671.67 − [°De] × 6⁄5 |
| Newton | [°N] = ([°R] − 491.67) × 11⁄60 | [°R] = [°N] × 60⁄11 + 491.67 |
| Réaumur | [°Ré] = ([°R] − 491.67) × 4⁄9 | [°R] = [°Ré] × 9⁄4 + 491.67 |
| Rømer | [°Rø] = ([°R] − 491.67) × 7⁄24 + 7.5 | [°R] = ([°Rø] − 7.5) × 24⁄7 + 491.67 |
Delisle
| from Delisle | to Delisle | |
|---|---|---|
| Celsius | [°C] = 100 − [°De] × 2⁄3 | [°De] = (100 − [°C]) × 3⁄2 |
| Fahrenheit | [°F] = 121 − [°De] × 6⁄5 | [°De] = (121 − [°F]) × 5⁄6 |
| Kelvin | [K] = 373.15 − [°De] × 2⁄3 | [°De] = (373.15 − [K]) × 3⁄2 |
| Rankine | [°R] = 671.67 − [°De] × 6⁄5 | [°De] = (671.67 − [°R]) × 6⁄5 |
| Newton | [°N] = 33 − [°De] × 11⁄50 | [°De] = (33 − [°N]) × 50⁄11 |
| Réaumur | [°Ré] = 80 − [°De] × 8⁄15 | [°De] = (80 − [°Ré]) × 8⁄15 |
| Rømer | [°Rø] = 60 − [°De] × 7⁄20 | [°De] = (60 − [°Rø]) × 20⁄7 |
Newton
| from Newton | to Newton | |
|---|---|---|
| Celsius | [°C] = [°N] × 100⁄33 | [°N] = [°C] × 33⁄100 |
| Fahrenheit | [°F] = [°N] × 60⁄11 + 32 | [°N] = ([°F] − 32) × 11⁄60 |
| Kelvin | [K] = [°N] × 100⁄33 + 273.15 | [°N] = ([K] − 273.15) × 33⁄100 |
| Rankine | [°R] = [°N] × 60⁄11 + 491.67 | [°N] = ([°R] − 491.67) × 11⁄60 |
| Delisle | [°De] = (33 − [°N]) × 50⁄11 | [°N] = 33 − [°De] × 11⁄50 |
| Réaumur | [°Ré] = [°N] × 80⁄33 | [°N] = [°Ré] × 33⁄80 |
| Rømer | [°Rø] = [°N] × 35⁄22 + 7.5 | [°N] = ([°Rø] − 7.5) × 22⁄35 |
Réaumur
| from Réaumur | to Réaumur | |
|---|---|---|
| Celsius | [°C] = [°Ré] × 5⁄4 | [°Ré] = [°C] × 4⁄5 |
| Fahrenheit | [°F] = [°Ré] × 9⁄4 + 32 | [°Ré] = ([°F] − 32) × 4⁄9 |
| Kelvin | [K] = [°Ré] × 5⁄4 + 273.15 | [°Ré] = ([K] − 273.15) × 4⁄5 |
| Rankine | [°R] = [°Ré] × 9⁄4 + 491.67 | [°Ré] = ([°R] − 491.67) × 4⁄9 |
| Delisle | [°De] = (80 − [°Ré]) × 8⁄15 | [°Ré] = 80 − [°De] × 8⁄15 |
| Newton | [°N] = [°Ré] × 33⁄80 | [°Ré] = [°N] × 80⁄33 |
| Rømer | [°Rø] = [°Ré] × 21⁄32 + 7.5 | [°Ré] = ([°Rø] − 7.5) × 32⁄21 |
Rømer
| from Rømer | to Rømer | |
|---|---|---|
| Celsius | [°C] = ([°Rø] − 7.5) × 40⁄21 | [°Rø] = [°C] × 21⁄40 + 7.5 |
| Fahrenheit | [°F] = ([°Rø] − 7.5) × 24⁄7 + 32 | [°Rø] = ([°F] − 32) × 7⁄24 + 7.5 |
| Kelvin | [K] = ([°Rø] − 7.5) × 40⁄21 + 273.15 | [°Rø] = ([K] − 273.15) × 21⁄40 + 7.5 |
| Rankine | [°R] = ([°Rø] − 7.5) × 24⁄7 + 491.67 | [°Rø] = ([°R] − 491.67) × 7⁄24 + 7.5 |
| Delisle | [°De] = (60 − [°Rø]) × 20⁄7 | [°Rø] = 60 − [°De] × 7⁄20 |
| Newton | [°N] = ([°Rø] − 7.5) × 22⁄35 | [°Rø] = [°N] × 35⁄22 + 7.5 |
| Réaumur | [°Ré] = ([°Rø] − 7.5) × 32⁄21 | [°Rø] = [°Ré] × 21⁄32 + 7.5 |
Comparison
| Celsius | Fahrenheit | Kelvin | Rankine | Delisle | Newton | Réaumur | Rømer |
|---|---|---|---|---|---|---|---|
| 300 | 572 | 573.15 | 1031.67 | -300 | 99.0 | 240 | 165.00 |
| 290 | 554 | 563.15 | 1013.67 | -285 | 95.7 | 232 | 159.75 |
| 280 | 536 | 553.15 | 995.67 | -270 | 92.4 | 224 | 154.50 |
| 270 | 518 | 543.15 | 977.67 | -255 | 89.1 | 216 | 149.25 |
| 260 | 500 | 533.15 | 959.67 | -240 | 85.8 | 208 | 144.00 |
| 250 | 482 | 523.15 | 941.67 | -225 | 82.5 | 200 | 138.75 |
| 240 | 464 | 513.15 | 923.67 | -210 | 79.2 | 192 | 133.50 |
| 230 | 446 | 503.15 | 905.67 | -195 | 75.9 | 184 | 128.25 |
| 220 | 428 | 493.15 | 887.67 | -180 | 72.6 | 176 | 123.00 |
| 210 | 410 | 483.15 | 869.67 | -165 | 69.3 | 168 | 117.75 |
| 200 | 392 | 473.15 | 851.67 | -150 | 66.0 | 160 | 112.50 |
| 190 | 374 | 463.15 | 833.67 | -135 | 62.7 | 152 | 107.25 |
| 180 | 356 | 453.15 | 815.67 | -120 | 59.4 | 144 | 102.00 |
| 170 | 338 | 443.15 | 797.67 | -105 | 56.1 | 136 | 96.75 |
| 160 | 320 | 433.15 | 779.67 | -90 | 52.8 | 128 | 91.50 |
| 150 | 302 | 423.15 | 761.67 | -75 | 49.5 | 120 | 86.25 |
| 140 | 284 | 413.15 | 743.67 | -60 | 46.2 | 112 | 81.00 |
| 130 | 266 | 403.15 | 725.67 | -45 | 42.9 | 104 | 75.75 |
| 120 | 248 | 393.15 | 707.67 | -30 | 39.6 | 96 | 70.50 |
| 110 | 230 | 383.15 | 689.67 | -15 | 36.3 | 88 | 65.25 |
| 100 | 212 | 373.15 | 671.67 | 0 | 33.0 | 80 | 60.00 |
| 90 | 194 | 363.15 | 653.67 | 15 | 29.7 | 72 | 54.75 |
| 80 | 176 | 353.15 | 635.67 | 30 | 26.4 | 64 | 49.50 |
| 70 | 158 | 343.15 | 617.67 | 45 | 23.1 | 56 | 44.25 |
| 60 | 140 | 333.15 | 599.67 | 60 | 19.8 | 48 | 39.00 |
| 50 | 122 | 323.15 | 581.67 | 75 | 16.5 | 40 | 33.75 |
| 40 | 104 | 313.15 | 563.67 | 90 | 13.2 | 32 | 28.50 |
| 30 | 86 | 303.15 | 545.67 | 105 | 9.9 | 24 | 23.25 |
| 20 | 68 | 293.15 | 527.67 | 120 | 6.6 | 16 | 18.00 |
| 10 | 50 | 283.15 | 509.67 | 135 | 3.3 | 8 | 12.75 |
| 0 | 32 | 273.15 | 491.67 | 150 | 0.0 | 0 | 7.50 |
| -10 | 14 | 263.15 | 473.67 | 165 | -3.3 | -8 | 2.25 |
| -20 | -4 | 253.15 | 455.67 | 180 | -6.6 | -16 | -3.00 |
| -30 | -22 | 243.15 | 437.67 | 195 | -9.9 | -24 | -8.25 |
| -40 | -40 | 233.15 | 419.67 | 210 | -13.2 | -32 | -13.50 |
| -50 | -58 | 223.15 | 401.67 | 225 | -16.5 | -40 | -18.75 |
| -60 | -76 | 213.15 | 383.67 | 240 | -19.8 | -48 | -24.00 |
| -70 | -94 | 203.15 | 365.67 | 255 | -23.1 | -56 | -29.25 |
| -80 | -112 | 193.15 | 347.67 | 270 | -26.4 | -64 | -34.50 |
| -90 | -130 | 183.15 | 329.67 | 285 | -29.7 | -72 | -39.75 |
| -100 | -148 | 173.15 | 311.67 | 300 | -33.0 | -80 | -45.00 |
| -110 | -166 | 163.15 | 293.67 | 315 | -36.3 | -88 | -50.25 |
| -120 | -184 | 153.15 | 275.67 | 330 | -39.6 | -96 | -55.50 |
| -130 | -202 | 143.15 | 257.67 | 345 | -42.9 | -104 | -60.75 |
| -140 | -220 | 133.15 | 239.67 | 360 | -46.2 | -112 | -66.00 |
| -150 | -238 | 123.15 | 221.67 | 375 | -49.5 | -120 | -71.25 |
| -160 | -256 | 113.15 | 203.67 | 390 | -52.8 | -128 | -76.50 |
| -170 | -274 | 103.15 | 185.67 | 405 | -56.1 | -136 | -81.75 |
| -180 | -292 | 93.15 | 167.67 | 420 | -59.4 | -144 | -87.00 |
| -190 | -310 | 83.15 | 149.67 | 435 | -62.7 | -152 | -92.25 |
| -200 | -328 | 73.15 | 131.67 | 450 | -66.0 | -160 | -97.50 |
| -210 | -346 | 63.15 | 113.67 | 465 | -69.3 | -168 | -102.75 |
| -220 | -364 | 53.15 | 95.67 | 480 | -72.6 | -176 | -108.00 |
| -230 | -382 | 43.15 | 77.67 | 495 | -75.9 | -184 | -113.25 |
| -240 | -400 | 33.15 | 59.67 | 510 | -79.2 | -192 | -118.50 |
| -250 | -418 | 23.15 | 41.67 | 525 | -82.5 | -200 | -123.75 |
| -260 | -436 | 13.15 | 23.67 | 540 | -85.8 | -208 | -129.00 |
| -273.15 | -459.67 | 0 | 0 | 559.725 | -90.1395 | -218.52 | -135.90375 |
Comparison of temperature scales
| Comment | Kelvin | Celsius | Fahrenheit | Rankine | Delisle | Newton | Réaumur | Rømer |
|---|---|---|---|---|---|---|---|---|
| Absolute zero | 0.00 | -273.15 | -459.67 | 0.00 | 559.725 | -90.14 | -218.52 | -135.90375 |
| Lowest recorded surface temperature on Earth (Vostok, Antarctica - July 21, 1983) |
184.00 | -89.00 | -128.20 | 331.47 | 283.50 | -29.37 | -71.20 | -39.225 |
| Fahrenheit's ice/salt mixture | 255.37 | -17.78 | 0.00 | 459.67 | 176.67 | -5.87 | -14.22 | -1.83 |
| Ice melts (at standard pressure) | 273.15 | 0.00 | 32.00 | 491.67 | 150.00 | 0.00 | 0.00 | 7.50 |
| Average surface temperature on Earth | 288.00 | 15.00 | 59.00 | 518.67 | 127.50 | 4.95 | 12.00 | 15.375 |
| Average human body temperature ¹ | 309.95 | 36.80 | 98.24 | 557.91 | 94.80 | 12.144 | 29.44 | 26.82 |
| Highest recorded surface temperature on Earth (Al 'Aziziyah, Libya - September 13, 1922) |
331.00 | 58.00 | 136.40 | 596.07 | 63.00 | 19.14 | 46.40 | 37.95 |
| Water boils (at standard pressure) | 373.1339 | 99.9839 | 211.97102 | 671.64102 | 0.00 | 33.00 | 80.00 | 60.00 |
| Titanium melts | 1941.00 | 1668.00 | 3034.00 | 3494.00 | -2352.00 | 550.00 | 1334.00 | 883.00 |
| The surface of the Sun | 5800.00 | 5526.00 | 9980.00 | 10440.00 | -8140.00 | 1823.00 | 4421.00 | 2909.00 |
¹ Normal human body temperature is 36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F. The commonly given value 98.6 °F is simply the exact conversion of the nineteenth-century German standard of 37 °C. Since it does not list an acceptable range, it could therefore be said to have excess (invalid) precision. Here's a list of various measurements.
Some numbers in this table have been rounded off.
See also
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