Celsius Converter
Convert Celsius to Reaumur and more • 15 conversions
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Unit Explanations
Celsius°C
Source UnitCelsius, denoted by the symbol °C, is a scale and unit of measurement for temperature. It is named after the Swedish astronomer Anders Celsius, who developed a similar temperature scale. In the Celsius scale, the freezing point of water is 0 degrees, and the boiling point is 100 degrees under standard atmospheric pressure. This makes it especially useful for scientific calculations and everyday temperature measurements as it aligns closely with the metric system. The Celsius scale is widely used around the world, with the exception of some countries like the United States, which predominantly uses Fahrenheit.
Current Use
The Celsius scale is the most widely used temperature scale in the world today. It is used in most countries for daily temperature measurements. In scientific contexts, it is used alongside the Kelvin scale, which is the SI unit for temperature. The Celsius scale's straightforward alignment with the metric system makes it an ideal choice for educational, scientific, and meteorological purposes.
Fun Fact
The Celsius scale was initially reversed, with 0 as boiling point and 100 as freezing point.
Réaumur°Ré
Target UnitThe Réaumur scale, also known as the octogesimal scale, is a temperature scale defined by the freezing point of water at 0 degrees Réaumur (°Ré) and the boiling point at 80 degrees Réaumur. It was proposed by the French scientist René Antoine Ferchault de Réaumur in 1730. The scale was widely used in Europe, particularly in France and Germany, until the adoption of the Celsius scale. The Réaumur scale is based on the fractional division of the temperature range between freezing and boiling water, making it an important historical reference in thermometry.
Current Use
Today, the Réaumur scale is largely obsolete and is rarely used in everyday temperature measurements. However, it still holds historical significance and is occasionally referenced in academic contexts or discussions about historical temperature scales. Certain niche industries, especially in food processing and brewing, may still employ the Réaumur scale in specific contexts.
Fun Fact
The Réaumur scale was widely used in the 18th century, especially in France and Germany.
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= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Celsius
temperature • Non-SI
Definition
Celsius, denoted by the symbol °C, is a scale and unit of measurement for temperature. It is named after the Swedish astronomer Anders Celsius, who developed a similar temperature scale. In the Celsius scale, the freezing point of water is 0 degrees, and the boiling point is 100 degrees under standard atmospheric pressure. This makes it especially useful for scientific calculations and everyday temperature measurements as it aligns closely with the metric system. The Celsius scale is widely used around the world, with the exception of some countries like the United States, which predominantly uses Fahrenheit.
History & Origin
The Celsius scale was developed by Swedish astronomer Anders Celsius in 1742. Originally, Celsius devised his scale with 0 as the boiling point of water and 100 as the freezing point, which was later inverted by Carl Linnaeus in 1744 to its current form. This scale quickly became popular due to its straightforward 100-degree interval between the key physical phenomena of freezing and boiling water, which made it intuitive and easy to use, particularly for scientific work.
Etymology: The term 'Celsius' comes from the surname of Anders Celsius, the inventor of this temperature scale.
Current Use
The Celsius scale is the most widely used temperature scale in the world today. It is used in most countries for daily temperature measurements. In scientific contexts, it is used alongside the Kelvin scale, which is the SI unit for temperature. The Celsius scale's straightforward alignment with the metric system makes it an ideal choice for educational, scientific, and meteorological purposes.
💡 Fun Facts
- •The Celsius scale was initially reversed, with 0 as boiling point and 100 as freezing point.
- •Celsius is used by scientists worldwide, except in the U.S., where Fahrenheit is more common.
- •The Celsius scale is often called centigrade, a term derived from Latin meaning 'hundred steps'.
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Réaumur
temperature • Non-SI
Definition
The Réaumur scale, also known as the octogesimal scale, is a temperature scale defined by the freezing point of water at 0 degrees Réaumur (°Ré) and the boiling point at 80 degrees Réaumur. It was proposed by the French scientist René Antoine Ferchault de Réaumur in 1730. The scale was widely used in Europe, particularly in France and Germany, until the adoption of the Celsius scale. The Réaumur scale is based on the fractional division of the temperature range between freezing and boiling water, making it an important historical reference in thermometry.
History & Origin
The Réaumur temperature scale originated in the early 18th century, developed by the French physicist René Antoine Ferchault de Réaumur. He introduced the scale in 1730, creating a temperature measurement system based on the properties of water. The scale gained popularity in scientific and industrial applications, particularly in France and Germany, before the rise of the Celsius scale.
Etymology: The term 'Réaumur' is derived from the name of its inventor, René Antoine Ferchault de Réaumur, who was a prominent French scientist known for his contributions to thermometry and other fields.
Current Use
Today, the Réaumur scale is largely obsolete and is rarely used in everyday temperature measurements. However, it still holds historical significance and is occasionally referenced in academic contexts or discussions about historical temperature scales. Certain niche industries, especially in food processing and brewing, may still employ the Réaumur scale in specific contexts.
💡 Fun Facts
- •The Réaumur scale was widely used in the 18th century, especially in France and Germany.
- •René Antoine Ferchault de Réaumur was not just a scientist; he was also a member of the French Academy of Sciences.
- •The Réaumur scale is sometimes referred to as the octogesimal scale due to its division of the boiling and freezing points into 80 degrees.
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