Online Temperature Converter

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Temperature Converter


Please enter a number:
Celsius (C)
Fahrenheit (F)
Kelvin
Rankine

This temperature converter can convert between different temperature units, you just need to enter a original value and select the original unit in combobox, converter will quickly calculate all the values of other temperature units.

This tool calculates equivalent temperature values across several commonly used temperature scales. The Kelvin and Rankine scales are absolute versions of the Celsius and Fahrenheit scales, respectively, meaning that the zero points on these scales reflect a theoretical minimum temperature. In contrast, the zero points on the Celsius and Fahrenheit scales were originally based on observable physical phenomena, such as the freezing point of water.

Calculator Use

Temperature conversions are performed by using a formula, which differs depending on the two temperature scales you are converting between.

For example, to convert 50 degrees Celsius (centigrade) to Fahrenheit, we plug our numbers into the formula as shown below: F = C * 9/5 + 32

F = 50 * 9/5 + 32

F = 90 + 32

F = 122

50 degrees Celsius is equal to 122 degrees Fahrenheit.

Temperature Conversion Calculator

emperature Conversion Calculator is an online heat measurement tool in unit conversion programmed to calculate the equivalent temperature in Celsius, Fahrenheit and Kelvin for any given input value of temperature. Celsius, Fahrenheit and Kelvin are the scales used to measure the temperature. Degree Celcius, Degree Fahrenheit and Kelvin are the temperature measurement units refers to Celsius scale, Fahrenheit scale and Kelvin scale respectively. Unlike other two measurement units, Kelvin is an absolute thermodynamic scale doesn't have any typeset degree. This Temperature converter use all these scales to generate output in any temperature units for the respective input temperature value that you can convert any temperature from Kelvin to Celsius and Fahrenheit or celcius to Fahrenheit and Kelvin or Fahrenheit to Celsius and Kelvin.

History of measuring temperature:

The idea of measuring temperature exists a long time. One of the first who wanted to make a temperature scale was Galen (ca. 170). He had a scale of 4 degrees warmth and 4 degrees of cold. The earlier measurement instruments for temperature where called thermo scopes. In 1610 Galileo introduced wine in the thermo scopes instead of air. In 1724 Gabriel Fahrenheit introduced the medium mercury in the thermo scopes. The reason that mercury was used is that the thermal expansion of mercury is large, mostly homogeneous and it does not stick on the glass. Mercury also stays in the liquid phase for a great range of temperature. It is also easy to read.

Present temperature scales:

Present temperature scales have two basic points: from when the water starts to freeze and when it starts to boil. Between these two temperatures a scale is made. The two most popular scales are the Celsius (made by Anders Celsius) and Fahrenheit (made by Gabriel Fahrenheit) scale. The Fahrenheit scale is defined so that the melting point of water lays by 32 degrees Fahrenheit and the boiling point lays by 212 degrees Fahrenheit. This means that between the freezing point and boiling point there are 180 divisions. Fahrenheit introduced his scale in 1724.

Another scale is the Celsius scale. In the Celsius scale the freezing point of water is set at 0 degrees (centigrade) and the boiling point at 100 degrees (centigrade). This scale exists on 100 divisions, also known as centiscale. In 1948 the centidegrees (centigrade scale) were replaced by the degrees Celsius (oC).