This is a collection of temperature conversion formulas and comparisons among eight different temperature scales, several of which have long been obsolete.

Temperatures on scales that either do not share a numeric zero or are nonlinearly related cannot correctly be mathematically equated (related using the symbol =), and thus temperatures on different scales are more correctly described as corresponding (related using the symbol ≘).

Conversion calculator

{| class="wikitable"

|+ Calculator for temperature conversion

! Celsius

! Fahrenheit

! Kelvin

! Rankine

! Delisle

! Newton

! Réaumur

! Rømer

|-

|

|

|

|

|

|

|

|

|}

Celsius scale

Kelvin scale

Fahrenheit scale

Rankine scale

Delisle scale

Newton scale

Réaumur scale

Rømer scale

Comparison values chart

{| class="wikitable sticky-header" style="text-align:center"

|-

! Celsius !! Fahrenheit !! Kelvin !! Rankine !! Delisle !! Newton !! Réaumur !! Rømer

|-

| 500.00 || 932.00 || 773.15 || 1391.67 || −600.00 || 165.00 || 400.00 || 270.00

|-

| 490.00 || 914.00 || 763.15 || 1373.67 || −585.00 || 161.70 || 392.00 || 264.75

|-

| 480.00 || 896.00 || 753.15 || 1355.67 || −570.00 || 158.40 || 384.00 || 259.50

|-

| 470.00 || 878.00 || 743.15 || 1337.67 || −555.00 || 155.10 || 376.00 || 254.25

|-

| 460.00 || 860.00 || 733.15 || 1319.67 || −540.00 || 151.80 || 368.00 || 249.00

|-

| 450.00 || 842.00 || 723.15 || 1301.67 || −525.00 || 148.50 || 360.00 || 243.75

|-

| 440.00 || 824.00 || 713.15 || 1283.67 || −510.00 || 145.20 || 352.00 || 238.50

|-

| 430.00 || 806.00 || 703.15 || 1265.67 || −495.00 || 141.90 || 344.00 || 233.25

|-

| 420.00 || 788.00 || 693.15 || 1247.67 || −480.00 || 138.60 || 336.00 || 228.00

|-

| 410.00 || 770.00 || 683.15 || 1229.67 || −465.00 || 135.30 || 328.00 || 222.75

|-

| 400.00 || 752.00 || 673.15 || 1211.67 || −450.00 || 132.00 || 320.00 || 217.50

|-

| 390.00 || 734.00 || 663.15 || 1193.67 || −435.00 || 128.70 || 312.00 || 212.25

|-

| 380.00 || 716.00 || 653.15 || 1175.67 || −420.00 || 125.40 || 304.00 || 207.00

|-

| 370.00 || 698.00 || 643.15 || 1157.67 || −405.00 || 122.10 || 296.00 || 201.75

|-

| 360.00 || 680.00 || 633.15 || 1139.67 || −390.00 || 118.80 || 288.00 || 196.50

|-

| 350.00 || 662.00 || 623.15 || 1121.67 || −375.00 || 115.50 || 280.00 || 191.25

|-

| 340.00 || 644.00 || 613.15 || 1103.67 || −360.00 || 112.20 || 272.00 || 186.00

|-

| 330.00 || 626.00 || 603.15 || 1085.67 || −345.00 || 108.90 || 264.00 || 180.75

|-

| 320.00 || 608.00 || 593.15 || 1067.67 || −330.00 || 105.60 || 256.00 || 175.50

|-

| 310.00 || 590.00 || 583.15 || 1049.67 || −315.00 || 102.30 || 248.00 || 170.25

|-

| 300.00 || 572.00 || 573.15 || 1031.67 || −300.00 || 99.00 || 240.00 || 165.00

|-

| 290.00 || 554.00 || 563.15 || 1013.67 || −285.00 || 95.70 || 232.00 || 159.75

|-

| 280.00 || 536.00 || 553.15 || 995.67 || −270.00 || 92.40 || 224.00 || 154.50

|-

| 270.00 || 518.00 || 543.15 || 977.67 || −255.00 || 89.10 || 216.00 || 149.25

|-

| 260.00 || 500.00 || 533.15 || 959.67 || −240.00 || 85.80 || 208.00 || 144.00

|-

| 250.00 || 482.00 || 523.15 || 941.67 || −225.00 || 82.50 || 200.00 || 138.75

|-

| 240.00 || 464.00 || 513.15 || 923.67 || −210.00 || 79.20 || 192.00 || 133.50

|-

| 230.00 || 446.00 || 503.15 || 905.67 || −195.00 || 75.90 || 184.00 || 128.25

|-

| 220.00 || 428.00 || 493.15 || 887.67 || −180.00 || 72.60 || 176.00 || 123.00

|-

| 210.00 || 410.00 || 483.15 || 869.67 || −165.00 || 69.30 || 168.00 || 117.75

|-

| 200.00 || 392.00 || 473.15 || 851.67 || −150.00 || 66.00 || 160.00 || 112.50

|-

| 190.00 || 374.00 || 463.15 || 833.67 || −135.00 || 62.70 || 152.00 || 107.25

|-

| 180.00 || 356.00 || 453.15 || 815.67 || −120.00 || 59.40 || 144.00 || 102.00

|-

| 170.00 || 338.00 || 443.15 || 797.67 || −105.00 || 56.10 || 136.00 || 96.75

|-

| 160.00 || 320.00 || 433.15 || 779.67 || −90.00 || 52.80 || 128.00 || 91.50

|-

| 150.00 || 302.00 || 423.15 || 761.67 || −75.00 || 49.50 || 120.00 || 86.25

|-

| 140.00 || 284.00 || 413.15 || 743.67 || −60.00 || 46.20 || 112.00 || 81.00

|-

| 130.00 || 266.00 || 403.15 || 725.67 || −45.00 || 42.90 || 104.00 || 75.75

|-

| 120.00 || 248.00 || 393.15 || 707.67 || −30.00 || 39.60 || 96.00 || 70.50

|-

| 110.00 || 230.00 || 383.15 || 689.67 || −15.00 || 36.30 || 88.00 || 65.25

|-

| 100.00 || 212.00 || 373.15 || 671.67 || 0.00 || 33.00 || 80.00 || 60.00

|-

| 90.00 || 194.00 || 363.15 || 653.67 || 15.00 || 29.70 || 72.00 || 54.75

|-

| 80.00 || 176.00 || 353.15 || 635.67 || 30.00 || 26.40 || 64.00 || 49.50

|-

| 70.00 || 158.00 || 343.15 || 617.67 || 45.00 || 23.10 || 56.00 || 44.25

|-

| 60.00 || 140.00 || 333.15 || 599.67 || 60.00 || 19.80 || 48.00 || 39.00

|-

| 50.00 || 122.00 || 323.15 || 581.67 || 75.00 || 16.50 || 40.00 || 33.75

|-

| 40.00 || 104.00 || 313.15 || 563.67 || 90.00 || 13.20 || 32.00 || 28.50

|-

| 30.00 || 86.00 || 303.15 || 545.67 || 105.00 || 9.90 || 24.00 || 23.25

|-

| 20.00 || 68.00 || 293.15 || 527.67 || 120.00 || 6.60 || 16.00 || 18.00

|-

| 10.00 || 50.00 || 283.15 || 509.67 || 135.00 || 3.30 || 8.00 || 12.75

|-

| 0.00 || 32.00 || 273.15 || 491.67 || 150.00 || 0.00 || 0.00 || 7.50

|-

| −10.00 || 14.00 || 263.15 || 473.67 || 165.00 || −3.30 || −8.00 || 2.25

|-

| −14.26 || 6.29 || 258.86 || 465.96 || 171.43 || −4.71 || −11.43 || 0.00

|-

| −17.78 || 0.00 || 255.37 || 459.67 || 176.67 || −5.87 || −14.22 || −1.83

|-

| −20.00 || −4.00 || 253.15 || 455.67 || 180.00 || −6.60 || −16.00 || −3.00

|-

| −30.00 || −22.00 || 243.15 || 437.67 || 195.00 || −9.90 || −24.00 || −8.25

|-

| −40.00 || −40.00 || 233.15 || 419.67 || 210.00 || −13.20 || −32.00 || −13.50

|-

| −50.00 || −58.00 || 223.15 || 401.67 || 225.00 || −16.50 || −40.00 || −18.75

|-

| −60.00 || −76.00 || 213.15 || 383.67 || 240.00 || −19.80 || −48.00 || −24.00

|-

| −70.00 || −94.00 || 203.15 || 365.67 || 255.00 || −23.10 || −56.00 || −29.25

|-

| −80.00 || −112.00 || 193.15 || 347.67 || 270.00 || −26.40 || −64.00 || −34.50

|-

| −90.00 || −130.00 || 183.15 || 329.67 || 285.00 || −29.70 || −72.00 || −39.75

|-

| −100.00 || −148.00 || 173.15 || 311.67 || 300.00 || −33.00 || −80.00 || −45.00

|-

| −110.00 || −166.00 || 163.15 || 293.67 || 315.00 || −36.30 || −88.00 || −50.25

|-

| −120.00 || −184.00 || 153.15 || 275.67 || 330.00 || −39.60 || −96.00 || −55.50

|-

| −130.00 || −202.00 || 143.15 || 257.67 || 345.00 || −42.90 || −104.00 || −60.75

|-

| −140.00 || −220.00 || 133.15 || 239.67 || 360.00 || −46.20 || −112.00 || −66.00

|-

| −150.00 || −238.00 || 123.15 || 221.67 || 375.00 || −49.50 || −120.00 || −71.25

|-

| −160.00 || −256.00 || 113.15 || 203.67 || 390.00 || −52.80 || −128.00 || −76.50

|-

| −170.00 || −274.00 || 103.15 || 185.67 || 405.00 || −56.10 || −136.00 || −81.75

|-

| −180.00 || −292.00 || 93.15 || 167.67 || 420.00 || −59.40 || −144.00 || −87.00

|-

| −190.00 || −310.00 || 83.15 || 149.67 || 435.00 || −62.70 || −152.00 || −92.25

|-

| −200.00 || −328.00 || 73.15 || 131.67 || 450.00 || −66.00 || −160.00 || −97.50

|-

| −210.00 || −346.00 || 63.15 || 113.67 || 465.00 || −69.30 || −168.00 || −102.75

|-

| −220.00 || −364.00 || 53.15 || 95.67 || 480.00 || −72.60 || −176.00 || −108.00

|-

| −230.00 || −382.00 || 43.15 || 77.67 || 495.00 || −75.90 || −184.00 || −113.25

|-

| −240.00 || −400.00 || 33.15 || 59.67 || 510.00 || −79.20 || −192.00 || −118.50

|-

| −250.00 || −418.00 || 23.15 || 41.67 || 525.00 || −82.50 || −200.00 || −123.75

|-

| −260.00 || −436.00 || 13.15 || 23.67 || 540.00 || −85.80 || −208.00 || −129.00

|-

| −270.00 || −454.00 || 3.15 || 5.67 || 555.00 || −89.10 || −216.00 || −134.25

|-

| −273.15 || −459.67 || 0.00 || 0.00 || 559.725 || −90.1395 || −218.52 || −135.90375

|-

! Celsius !! Fahrenheit !! Kelvin !! Rankine !! Delisle !! Newton !! Réaumur !! Rømer

|-

|}

Comparison of temperature scales

{| class="wikitable" style="text-align:right;"

|+ Comparison of temperature scales

|-

! Comment

! Kelvin

! Celsius

! Fahrenheit

! Rankine

! Delisle

! Newton

! Réaumur

! Rømer

|-

| style="text-align:left;" | Absolute zero

| 0.00

| −273.15

| −459.67

| 0.00

| 559.73

| −90.14

| −218.52

| −135.90

|-

| style="text-align:left;" | Lowest recorded surface temperature on Earth

| 184

| −89.2

| 331

| 58

Some numbers in this table have been rounded.

Graphical representation

<div style="overflow-x:auto">

{| width="10px" cellpadding="0" cellspacing="0"

|-

| colspan="10" rowspan="5" style="vertical-align: top;" |

<imagemap>

:File:Comparison of temperature scales blank.svg|845x580px|class=skin-invert-image|

circle 40 330 4 0 K / 0 °R (−273.15 °C)

circle 504 330 4 0 °F (−17.78 °C)

circle 537 270 4 150 °D

circle 537 317 4 32 °F

circle 537 325 4 7.5 °Rø

circle 537 332 4 0 °C / 0 °Ré / 0 °N

circle 718 245 4 212 °F

circle 718 290 4 100 °C

circle 718 298 4 80 °Ré

circle 718 306 4 60 °Rø

circle 718 317 4 33 °N

circle 718 330 4 0 °D

rect 0 0 845 580 :File:Comparison of temperature scales blank.svg

desc none

</imagemap>

| style="vertical-align: top; height: 142px;" | Rankine (°R)

|-

| style="vertical-align: top; height: 42px;" | Kelvin (K)

|-

| style="vertical-align: top; height: 69px; white-space: nowrap;" | Fahrenheit (°F)

|-

| style="vertical-align: top; height: 106px; line-height: 20.5px; white-space: nowrap;" | Celsius (°C)<br />Réaumur (°Ré)<br />Rømer (°Rø)<br />Newton (°N)

|-

| style="vertical-align: top; height: 220px;" | Delisle (°D)

|- style="vertical-align: top;"

| style="width: 10px;" | &thinsp;

| style="width: 60px; text-align: center;" | Absolute zero

| style="width: 110px; text-align: center;" | Lowest recorded surface temperature on Earth