Complete Temperature Conversion Index

A comprehensive guide to all supported temperature scales and conversion paths. Click any link below to perform the conversion instantly.

This page is designed for quick reference, listing all supported temperature scales and providing a direct link for every possible conversion pair.

Temperature is a fundamental physical quantity that expresses hotness or coldness. Unlike many other physical quantities, temperature scales are often defined by specific reference points—such as the freezing and boiling points of water—rather than starting at a shared "zero" representing nothingness. This makes conversion between scales mathematically interesting, often requiring both multiplication and offset addition.

While Celsius and Fahrenheit are the most common scales used in daily life, the scientific community relies heavily on the Kelvin scale, which starts at absolute zero. The Rankine scale serves a similar purpose for engineering fields that utilize Imperial units. Understanding these relationships is crucial for accurate data interpretation across different regions and scientific disciplines.

9 Supported Temperature Scales

Celsius (°C)

The Celsius scale, also known as the centigrade scale, is the most widely used temperature scale in the world. It is an interval system defined by 0 °C as the freezing point of water and 100 °C as the boiling point of water at standard atmospheric pressure.

Fahrenheit (°F)

The Fahrenheit scale is primarily used in the United States and a few other countries. It defines the freezing point of water at 32 °F and the boiling point at 212 °F, separating the two points by 180 degrees.

Kelvin (K)

The Kelvin scale is the base unit of thermodynamic temperature in the International System of Units (SI). It is an absolute temperature scale, meaning 0 K (absolute zero) is the point where all thermal motion ceases. It has no degrees symbol (°).

Rankine (°R)

The Rankine scale is an absolute thermodynamic temperature scale that uses the Fahrenheit degree size. Zero degrees Rankine (°R) is equivalent to absolute zero. It is primarily used in engineering systems in the United States.

Delisle (°De)

The Delisle scale is an obsolete temperature scale invented in 1732. It is unusual because it is an inverted scale, where the boiling point of water (0 °De) is lower than the freezing point (150 °De).Note: Historical, used in Russia in the 18th century.

Newton (°N)

The Newton scale was devised by Isaac Newton around 1700. It used the freezing point of water as 0 and the boiling point as 33. It is considered a direct predecessor to the Celsius scale.Note: Historical, developed by Isaac Newton.

Réaumur (°Ré)

The Réaumur scale has the freezing point of water at 0 °Ré and the boiling point at 80 °Ré. It was popular in parts of Europe in the 18th and 19th centuries, particularly in France and Germany.Note: Historical, common in Europe in the 18th and 19th centuries.

Rømer (°Rø)

The Rømer scale was an early scale invented by Ole Christensen Rømer. It defined the freezing point of water as 7.5 degrees and the boiling point as 60 degrees. It was a direct influence on the Fahrenheit scale.Note: Historical, used in Denmark.

Leiden Scale (L)

The Leiden Scale is a historical temperature scale used in the early 20th century, particularly at the Leiden University lab, for measuring extremely low temperatures, primarily for values below -183 °C.Note: Historical, used for very low temperatures.

All Possible Conversions (72)

Below is a complete matrix of conversion links. Whether you need to convert everyday weather temperatures or precise scientific measurements, simply click the specific pair to access a dedicated calculator pre-configured for your needs.

* The full list of supported units (including historical scales) is sourced directly from the application’s core data, ensuring that all conversion pairs listed here are accurate and functional on the main converter page.