Réaumur to Kelvin (°Ré → K)
Formula
°Ré → kelvin → KConversion Table
| °Ré | K |
|---|---|
| 0 | 273.15 |
| 1.0000 | 274.40 |
| 2.0000 | 275.65 |
| 3.0000 | 276.90 |
| 4.0000 | 278.15 |
| 5.0000 | 279.40 |
| 6.0000 | 280.65 |
| 7.0000 | 281.90 |
| 8.0000 | 283.15 |
| 9.0000 | 284.40 |
| 10.000 | 285.65 |
| 11.000 | 286.90 |
| 12.000 | 288.15 |
| 13.000 | 289.40 |
| 14.000 | 290.65 |
| 15.000 | 291.90 |
| 16.000 | 293.15 |
| 17.000 | 294.40 |
| 18.000 | 295.65 |
| 19.000 | 296.90 |
| °Ré | K |
|---|---|
| 20.000 | 298.15 |
| 21.000 | 299.40 |
| 22.000 | 300.65 |
| 23.000 | 301.90 |
| 24.000 | 303.15 |
| 25.000 | 304.40 |
| 26.000 | 305.65 |
| 27.000 | 306.90 |
| 28.000 | 308.15 |
| 29.000 | 309.40 |
| 30.000 | 310.65 |
| 31.000 | 311.90 |
| 32.000 | 313.15 |
| 33.000 | 314.40 |
| 34.000 | 315.65 |
| 35.000 | 316.90 |
| 36.000 | 318.15 |
| 37.000 | 319.40 |
| 38.000 | 320.65 |
| 39.000 | 321.90 |
| °Ré | K |
|---|---|
| 40.000 | 323.15 |
| 41.000 | 324.40 |
| 42.000 | 325.65 |
| 43.000 | 326.90 |
| 44.000 | 328.15 |
| 45.000 | 329.40 |
| 46.000 | 330.65 |
| 47.000 | 331.90 |
| 48.000 | 333.15 |
| 49.000 | 334.40 |
| 50.000 | 335.65 |
| 51.000 | 336.90 |
| 52.000 | 338.15 |
| 53.000 | 339.40 |
| 54.000 | 340.65 |
| 55.000 | 341.90 |
| 56.000 | 343.15 |
| 57.000 | 344.40 |
| 58.000 | 345.65 |
| 59.000 | 346.90 |
| °Ré | K |
|---|---|
| 60.000 | 348.15 |
| 61.000 | 349.40 |
| 62.000 | 350.65 |
| 63.000 | 351.90 |
| 64.000 | 353.15 |
| 65.000 | 354.40 |
| 66.000 | 355.65 |
| 67.000 | 356.90 |
| 68.000 | 358.15 |
| 69.000 | 359.40 |
| 70.000 | 360.65 |
| 71.000 | 361.90 |
| 72.000 | 363.15 |
| 73.000 | 364.40 |
| 74.000 | 365.65 |
| 75.000 | 366.90 |
| 76.000 | 368.15 |
| 77.000 | 369.40 |
| 78.000 | 370.65 |
| 79.000 | 371.90 |
Réaumur to Kelvin Conversion
Converting Réaumur (°Ré) to Kelvin (K) is a common temperature conversion. 1 °Ré equals 274.4 K. For example, 100 °Ré is equal to 398.15 K.
Quick Mental Math: Réaumur to Kelvin
Multiply by 1.25 to convert reaumur to kelvin.
Why is converting Réaumur to Kelvin tricky?
Kelvin has a different zero point (273.15), so you can't just multiply or divide.
Reference Temperatures
Absolute zero: -218.52 °Ré = 0 K. Water freezing point: 0 °Ré = 273.15 K. Room temperature: 16 °Ré = 293.15 K. Body temperature: 29.6 °Ré = 310.15 K. Water boiling point: 80 °Ré = 373.15 K.
What is Réaumur?
Réaumur (°Ré) is a unit of temperature. The Réaumur scale is a temperature scale where water freezes at 0 °Ré and boils at 80 °Ré at standard atmospheric pressure. Each degree Réaumur corresponds to 1.25 degrees Celsius. The scale was historically used in Europe but is now mostly obsolete and replaced by Celsius and Kelvin [cgpm-resolutions]. René Antoine Ferchault de Réaumur introduced the scale in 1730 to simplify temperature measurement using alcohol thermometers. It was widely used in France and parts of Europe until the 19th century before being supplanted by the Celsius scale [cgpm-resolutions]. Today, the Réaumur scale has limited use and appears mainly in historical or academic contexts. Some traditional cheese-making regions in Europe may still reference it. Modern science and industry prefer Celsius or Kelvin in line with SI standards [cgpm-resolutions].
What is Kelvin?
Kelvin (K) is a unit of temperature. Kelvin is the SI base unit of thermodynamic temperature defined by fixing the numerical value of the Boltzmann constant to 1.380649×10⁻²³ J·K⁻¹. It uses absolute zero as its null point and increments equal to those of the Celsius scale. One kelvin equals one degree Celsius in magnitude but starts at absolute zero, representing the lowest physically possible temperature [bipm-si-brochure]. The kelvin scale was named after William Thomson, 1st Baron Kelvin, who proposed an absolute thermodynamic temperature scale in 1848. It was formally adopted as an SI base unit in 1967–1968 by the CGPM to provide a universal temperature standard based on fundamental constants [cgpm-resolutions]. Kelvin is the standard temperature unit in scientific research, thermodynamics, and engineering worldwide. It is the official unit for temperature in physics and chemistry according to the International System of Units (SI), used globally including by NIST and BIPM member countries [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: reaumer, reaumur, reaumur scale, réamer, kelvin degree, kelvins, kelvins unit, kelvian, kelvins scale. All of these refer to the Réaumur to Kelvin conversion.