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The Réaumur scale also known as the "octogesimal division", is a temperature scale in which the freezing and boiling points of water are set to 0 and 80 degrees respectively. The scale is named after René Antoine Ferchault de Réaumur, who first proposed something similar in 1730.
A ºF version of the Kelvin scale. Based upon the definitions of the Fahrenheit scale and the experimental evidence that absolute zero is -459.67ºF
| Réaumur | Rankine |
|---|---|
| 0ºRé | 491.67ºR |
| 1ºRé | 493.92ºR |
| 2ºRé | 496.17ºR |
| 3ºRé | 498.42ºR |
| 4ºRé | 500.67ºR |
| 5ºRé | 502.92ºR |
| 6ºRé | 505.17ºR |
| 7ºRé | 507.42ºR |
| 8ºRé | 509.67ºR |
| 9ºRé | 511.92ºR |
| 10ºRé | 514.17ºR |
| 11ºRé | 516.42ºR |
| 12ºRé | 518.67ºR |
| 13ºRé | 520.92ºR |
| 14ºRé | 523.17ºR |
| 15ºRé | 525.42ºR |
| 16ºRé | 527.67ºR |
| 17ºRé | 529.92ºR |
| 18ºRé | 532.17ºR |
| 19ºRé | 534.42ºR |
| Réaumur | Rankine |
|---|---|
| 20ºRé | 536.67ºR |
| 21ºRé | 538.92ºR |
| 22ºRé | 541.17ºR |
| 23ºRé | 543.42ºR |
| 24ºRé | 545.67ºR |
| 25ºRé | 547.92ºR |
| 26ºRé | 550.17ºR |
| 27ºRé | 552.42ºR |
| 28ºRé | 554.67ºR |
| 29ºRé | 556.92ºR |
| 30ºRé | 559.17ºR |
| 31ºRé | 561.42ºR |
| 32ºRé | 563.67ºR |
| 33ºRé | 565.92ºR |
| 34ºRé | 568.17ºR |
| 35ºRé | 570.42ºR |
| 36ºRé | 572.67ºR |
| 37ºRé | 574.92ºR |
| 38ºRé | 577.17ºR |
| 39ºRé | 579.42ºR |
| Réaumur | Rankine |
|---|---|
| 40ºRé | 581.67ºR |
| 41ºRé | 583.92ºR |
| 42ºRé | 586.17ºR |
| 43ºRé | 588.42ºR |
| 44ºRé | 590.67ºR |
| 45ºRé | 592.92ºR |
| 46ºRé | 595.17ºR |
| 47ºRé | 597.42ºR |
| 48ºRé | 599.67ºR |
| 49ºRé | 601.92ºR |
| 50ºRé | 604.17ºR |
| 51ºRé | 606.42ºR |
| 52ºRé | 608.67ºR |
| 53ºRé | 610.92ºR |
| 54ºRé | 613.17ºR |
| 55ºRé | 615.42ºR |
| 56ºRé | 617.67ºR |
| 57ºRé | 619.92ºR |
| 58ºRé | 622.17ºR |
| 59ºRé | 624.42ºR |