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Basic Measurements

Temperature Converter

Temperature is not a simple factor conversion: the scales are affine with different zero points. The correct formula is Β°F = Β°C Γ— 9/5 + 32, and K = Β°C + 273.15.

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About this category: Temperature

Temperature is not a simple factor conversion: the scales are affine with different zero points. The correct formula is Β°F = Β°C Γ— 9/5 + 32, and K = Β°C + 273.15.

Temperature is affine, not a factor: Β°F = Β°C Γ— 9/5 + 32 and K = Β°C + 273.15. A value can never fall below absolute zero.

Practical uses

Available units

UnitNameDefinitionClassification
Β°CCelsiusThe degree Celsius is accepted for use with the SI. Temperature intervals of one degree Celsius are equal in magnitude to one kelvin.Accepted with SI
Β°FFahrenheitThe Fahrenheit scale: water freezes at 32 and boils at 212.Non-SI
KKelvinThe kelvin is the SI base unit of thermodynamic temperature.SI Base
Β°RRankineAn absolute scale related to Fahrenheit.Non-SI

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