Temperature Unit Conversions

Select the unit to convert from in the input units list. Select the unit to convert to in the output units list. Enter the value to convert from into the input box on the left. The conversion result will appear in the output box.




Fahrenheit to Celsius | Celsius/Celcius to Farenheit | Temperature Unit Conversion Table

Temperature Definition:

Temperature is the average of kinetic energy of the movement of particles such as atoms or molecules. It is a numerical representation of how cold or hot something is.

Temperature Calculation Formulas:

F = Fahrenheit (°F) | C = Celsius (°C) | K = Kelvin

F = C(1.8) + 32
C = (F-32)/1.8
K = C + 273.15

Temperature Conversion Downloads:

Temperature Conversion Table/Chart
Oven(Cooking) Temperature Table/Chart
Temperature Conversion Formulas
World Temperature Map




deg C
degree C

Worldwide use:

The Celsius scale, which was already being commonly employed in Europe, discharged the Fahrenheit scale in most countries in the later half of the 20th century. However, Fahrenheit is still the official temperature unit of the United States, Cayman Islands and Belize.
Before the Celsius scale, the Fahrenheit scale was popularly used in most countries across the world. Even after the Celsius standard took over the area, the Fahrenheit standard remained the official in the US, Cayman Islands and Belize. And Canada preserved it as its supplementary temperature scale, beside Celsius.


When proposed, the standard definition of the Celsius Scale was, ‘A temperature scale between 0º to 100º degrees, where 0º means the melting point of ice, and 100º signifies the boiling point of water’. However, in the modern times, the definition of Celsius is based on the Kelvin Temperature Scale.

Today, the temperature 0 ºC means a temperature 273.15K or Kelvin. Therefore, the boiling point of water 100 ºC levels to 373.15K on the Kelvin scale.

The Celsius scale is not based on any ratio system, and is not an absolute standard (for example: 20 ºC heat does not represent the two times level of atmospheric heat of 10 ºC temperature). The scale is based on an interval system. For instance, the temperature interval between 20 ºC and 30 ºC is same, found between 30 ºC to 40 ºC.

A temperature difference of 1 deg C is the equivalent of a temperature difference 1.8°F.
The Fahrenheit is a thermodynamic temperature measuring scale, on which the freezing point of water is 32 ºF, and the boiling point is 212°F during standard atmospheric pressure and conditions.

It means, the degree interval on the Fahrenheit scale is 1/180, and 1ºF actually means 0.556 ºC on the Celsius scale

Common references:

Absolute Zero, -273.15 °C
Melting point of ice, 0 °C (actually -0.0001 °C)
Warm summer's day in a temperate climate, 22 °C
Normal human body temperature, 37 °C
Boiling point of water at 1 atmosphere, 99.9839 °C
Absolute Zero, -459.67°F
Freezing point of water, 32°F
Warm summer's day in a temperate climate, 72°F
Normal human body temperature, 98.6°F
Boiling point of water at 1 atmosphere, 212°F

There are three different scales for temperature conversions, namely Fahrenheit, Celsius, and Kelvin. We, at Online Conversions, offer you an easiest way to convert temperature units. Our temperature unit conversion, an online conversion calculator, enables you to convert units of temperature between various scales. Converting Fahrenheit to Celsius, Kelvin to Fahrenheit, or Rankine to Reaumur will be a matter of few seconds.

With the help of our temperature unit conversion tool one can access and convert some of the typical temperatures with no effort. Using our temperature conversion tool is also very easy as it just requires to type value into the appropriate edit box then the converter will convert the value into the other systems automatically.

Conversion between different temperature scales in your head is not so simple. One needs to remember proper appropriate conversion formula. Like, in order to convert Fahrenheit to Celsius the given value should be first deducted by 32, the multiplied by 5 and then divided by 9. In the similar fashion, when it comes to convert Celsius to Fahrenheit then the given value is first multiplied by 9, then resultant is divided by 5 and then the obtained value is added with 32. Though, the calculation is not much tricky but it requires a piece of paper and few minutes to calculate. Hence, utilizing our user-friendly temperature unit conversion tool is smart step as it gives you reliable and accurate results