Temperature Units Converter

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Formula: °C = (°F - 32) × 5/9

Additional information

Temperature is a fundamental physical quantity that measures the degree of hotness or coldness of an object or environment. It provides insight into the thermal energy present and determines the direction of heat transfer.

Temperature units are the different scales used to quantify and express temperature measurements. The temperature units used in this converter are:

  • Celsius (°C): is a widely used temperature scale, named after Swedish astronomer Anders Celsius. It sets the freezing point of water at 0°C and the boiling point at 100°C under standard atmospheric pressure. The Celsius scale is commonly employed in scientific, educational, and everyday contexts, providing a practical and easily understandable reference for temperature measurements.
  • Fahrenheit (°F): is a temperature scale developed by German physicist Daniel Gabriel Fahrenheit. It sets the freezing point of water at 32°F and the boiling point at 212°F under standard atmospheric pressure. The Fahrenheit scale is commonly used in the United States and a few other countries.
  • Kelvin (K): is an absolute temperature scale named after Scottish physicist William Thomson, 1st Baron Kelvin. It starts from absolute zero, which is considered the lowest achievable temperature (-273.15°C). The Kelvin scale is widely used in scientific and engineering fields, particularly in thermodynamics and physics.
  • Rankine (°R): is an absolute temperature scale named after Scottish engineer and physicist William John Macquorn Rankine. It is based on the Fahrenheit degrees and sets absolute zero at 0°R (-459.67°F). The Rankine scale is primarily used in engineering applications, especially in the United States.
  • Réaumur (°Ré): is a temperature scale named after French physicist René Antoine Ferchault de Réaumur. It sets the freezing point of water at 0°Ré and the boiling point at 80°Ré under standard atmospheric pressure. The Réaumur scale is less commonly used today but was historically employed in some parts of Europe.
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References: National Institute of Standards and Technology (NIST). “SI Units - Temperature”. https://www.nist.gov/pml/owm/si-units-temperature. Bureau International des Poids et Mesures (BIPM). “The International System of Units (SI)”. https://www.bipm.org/en/measurement-units/.