Temperature Conversion Formulas

The three common temperature scales are Celsius, Fahrenheit, and Kelvin. Each scale has its uses, so its likely youll encounter them and need to convert between them. Fortunately, the conversion formulas are simple: Celsius to Fahrenheit F = 9/5 ( C) + 32 Kelvin to Fahrenheit F = 9/5 (K - 273) + 32 Fahrenheit to Celsius C = 5/9 ( F - 32) Celsius to Kelvin K = C + 273 Kelvin to Celsius C = K - 273 Fahrenheit to Kelvin K = 5/9 ( F - 32) + 273 Useful Temperature Facts Celsius and Fahrenheit are the same at -40Â °.Water boils at 100Â °C or 212Â °F.Water freezes at 0Â °C and 32Â °F.Absolute zero is 0 K.Celsius and Fahrenheit are degree scales. The degree symbol is not used to report temperature using the Kelvin scale.