Kelvin
| Kelvin Formulas | ||
| \( T_{ °K} \;=\; 273.15 ° + T_ { °C} \) \( T_{ °K} \;=\; \dfrac{ T_ { °F} + 459.67° }{ 1.8 }\) \( T_{°K} \;=\; \dfrac{ T_{ °R} }{ 1.8 }\) | ||
| Symbol | English | Metric | 
| \( T \) = temperature | \( T \) | \( T \) | 
| \( C \) = celsius | - | \( C \) | 
| \( F \) = fahrenheit | \( F \) | - | 
| \( K \) = kelvin | - | \( K \) | 
| \( R \) = rankine | \( R \) | - | 
Kelvin, abbreviated as K, is a unit of temperature normally used for scientific calculations. Unlike celsius, fahrenheit and rankine, the word degree is not used. Since Kelvin starts with absolute zero it has no negative numbers.

