Temperature Converter

Temperature converter between units

Our tool allow for quick conversion of temperature units. Enter any temperature in the appropriate field. The temperature for the other units will be automatically calculated and displayed.
Supported units: Fahrenheit (°F), Celsius (°C), Kelvin (°K), Rankine (°R), Newton (°N), Réaumur (°Ré), Delisle (°De) and Rømer (°Rø).

Units of Temperature

Temperature is one of the basic physical quantities in thermodynamics. The temperature is related to the average kinetic energy of motion and vibration of all molecules forming a system and is a measure of this energy. The thermometric scale is a temperature scale defined by the basic points of the scale (for example, on the Celsius scale, these are the freezing and boiling points of distilled water at a pressure of 1 atm) and divided into a specific number of degrees.

The Fahrenheit scale (°F) is one of the temperature measurement scales proposed in 1724 and named after its creator Daniel Gabriel Fahrenheit (1686-1736). It was used to measure temperature in countries using imperial units of measurement until the mid-20th century when it was replaced by the Celsius scale. It is used in the USA, Cayman Islands, Bahamas, and Belize. In Canada, it exists as a complementary scale. 32 °F corresponds to the melting point of ice and 212 °F to the boiling point of water under normal pressure, i.e. 1013 hPa.

The Celsius scale (°C) is a thermometric scale, named after the Swedish scientist Anders Celsius, who proposed it in 1742. The two main reference points on the Celsius scale are the water freezing point (or melting point of ice) defined as 0 °C and the boiling point with a water temperature of 100 °C. The Celsius scale is the most common form of temperature indication in the world.

The Kelvin scale (°K) (absolute scale) is an absolute thermometric scale, i.e. zero on this scale means the lowest theoretically possible temperature a body can have. It is the temperature at which (according to classical physics) all vibrations of particles have stopped. However, this temperature cannot be reached - it has been calculated based on a function that depends on the kinetic energy in perfect gases. This function was developed by William Thomson, Lord Kelvin, whose honor was named after the scale and unit of temperature. Kelvin is the unit of temperature in the SI system, denoted by the symbol K.

The Rankine scale (°R) was developed by William Rankine. It is an absolute scale, i.e., zero on this scale means the lowest possible temperature that a perfect crystal can have, in which all vibrations of particles have ceased (absolute zero). This temperature has been calculated from the temperature-dependent function of the kinetic energy of the vibrations of the particles in the perfect crystal.

The Newton scale (°N) was devised by Isaac Newton (British scientist) around 1701. Newton developed the scale based on some temperatures which correspond to certain phenomena. The scale was problematic to use, so it was only later that he changed its description by defining two characteristic points: melting and boiling water, to which he assigned temperatures of 0 and 33°N. His scale became the basis for the publication later by Celsius of his scale, which he created with knowledge of Newton's work in this field.

The Réaumura scale (°Ré) is one of the thermometric scales introduced in 1731 by the French physicist R.A.F. de Réaumura (1683-1757), often used in Central Europe until the early 20th century. On the Réaumura scale, the melting point of ice (freezing of chemically pure water) is 0 °Ré (as on the Celsius scale) and the boiling point of water is 80 °Ré (100 °C), so 1 °C corresponds to 0,8 °Ré.

The Delisle scale (°D) was introduced in 1732 by French astronomer Joseph-Nicolas Delisle. The thermometer created by Delisle was a mercury thermometer. For a temperature of 0°D it determined the boiling points of water (100°C) and the freezing point of water is 150°D. This scale was used mainly in Russia until the 18th century.

The Rømer scale (°Rø) was proposed in 1701 by Danish astronomer Ole Rømer and is used quite rarely. 0° Rømer scale is the freezing temperature of the water-salt mixture. The boiling point of water is 60°Rø and the freezing point of water is 7.5°Rø. Originally the Rømer degrees were marked with °R, later it was changed to °Rø due to frequent confusion with Rankine and Réaumur degrees.

Possible conversion of temperature units

Our temperature converter automatically converts the following units: Fahrenheit (°F), Celsius (°C), Kelvin (°K), Rankine (°R), Newton (°N), Réaumur (°Ré), Delisle (°De) and Rømer (°Rø). It is possible to convert one unit into another:

  • Fahrenheit (°F) to Celsius (°C)
  • Fahrenheit (°F) to Kelvin (°K)
  • Fahrenheit (°F) to Rankine (°R)
  • Fahrenheit (°F) to Newton (°N)
  • Fahrenheit (°F) to Réaumur (°Ré)
  • Fahrenheit (°F) to Delisle (°De)
  • Fahrenheit (°F) to Rømer (°Rø)
  • Celsius (°C) to Fahrenheit (°F)
  • Celsius (°C) to Kelvin (°K)
  • Celsius (°C) to Rankine (°R)
  • Celsius (°C) to Newton (°N)
  • Celsius (°C) to Réaumur (°Ré)
  • Celsius (°C) to Delisle (°De)
  • Celsius (°C) to Rømer (°Rø)
  • Kelvin (°K) to Celsius (°C)
  • Kelvin (°K) to Fahrenheit (°F)
  • Kelvin (°K) to Rankine (°R)
  • Kelvin (°K) to Newton (°N)
  • Kelvin (°K) to Réaumur (°Ré)
  • Kelvin (°K) to Delisle (°De)
  • Kelvin (°K) to Rømer (°Rø)
  • Rankine (°R) to Celsius (°C)
  • Rankine (°R) to Kelvin (°K)
  • Rankine (°R) to Fahrenheit (°F)
  • Rankine (°R) to Newton (°N)
  • Rankine (°R) to Réaumur (°Ré)
  • Rankine (°R) to Delisle (°De)
  • Rankine (°R) to Rømer (°Rø)
  • Newton (°N) to Celsius (°C)
  • Newton (°N) to Kelvin (°K)
  • Newton (°N) to Rankine (°R)
  • Newton (°N) to Fahrenheit (°F)
  • Newton (°N) to Réaumur (°Ré)
  • Newton (°N) to Delisle (°De)
  • Newton (°N) to Rømer (°Rø)
  • Réaumur (°Ré) to Celsius (°C)
  • Réaumur (°Ré) to Kelvin (°K)
  • Réaumur (°Ré) to Rankine (°R)
  • Réaumur (°Ré) to Newton (°N)
  • Réaumur (°Ré) to Fahrenheit (°F)
  • Réaumur (°Ré) to Delisle (°De)
  • Réaumur (°Ré) to Rømer (°Rø)
  • Delisle (°De) to Celsius (°C)
  • Delisle (°De) to Kelvin (°K)
  • Delisle (°De) to Rankine (°R)
  • Delisle (°De) to Newton (°N)
  • Delisle (°De) to Réaumur (°Ré)
  • Delisle (°De) to Fahrenheit (°F)
  • Delisle (°De) to Rømer (°Rø)
  • Rømer (°Rø) to Celsius (°C)
  • Rømer (°Rø) to Kelvin (°K)
  • Rømer (°Rø) to Rankine (°R)
  • Rømer (°Rø) to Newton (°N)
  • Rømer (°Rø) to Réaumur (°Ré)
  • Rømer (°Rø) to Delisle (°De)
  • Rømer (°Rø) to Fahrenheit (°F)