Celsius is a temperature scale where freezing point of water is 0 degrees and the boiling point is 100 degrees. Used globally in all kinds of applications and used to known as centigrade until the mid of 20th century. The abbreviation is "oC".
Fahrenheit is a temperature scale where freezing point of water is 32 fahrenheit degrees and the boiling point is 212 fahrenheit degrees. It is replaced by celsius (centigrade) scale as part of the metrication process but it is used in united states for all kinds of applications to measure the temperature. The abbreviation is "oF".
The conversion formula: Fahrenheit = Celsius * 9 / 5 + 32
For example: 30 o
C = 30 * 9 / 5 + 32 = 86 o
From fahrenheit to celsius converter, please go to fahrenheit to celsius
For other temperature unit conversions, please go to Temperature Conversion