This is a collection of
temperature
Temperature is a physical quantity that quantitatively expresses the attribute of hotness or coldness. Temperature is measurement, measured with a thermometer. It reflects the average kinetic energy of the vibrating and colliding atoms making ...
conversion formulas and comparisons among eight different
temperature scale
Scale of temperature is a methodology of calibrating the physical quantity temperature in metrology. Empirical scales measure temperature in relation to convenient and stable parameters or reference points, such as the freezing and boiling point ...
s, several of which have long been obsolete.
Temperatures on scales that either do not share a numeric zero or are nonlinearly related cannot correctly be mathematically equated (related using the symbol =), and thus temperatures on different scales are more correctly described as corresponding (related using the symbol ≘).
Conversion calculator
Celsius scale
Kelvin scale
Fahrenheit scale
Rankine scale
Delisle scale
Newton scale
Réaumur scale
Rømer scale
Comparison values chart
Comparison of temperature scales
* Normal human body temperature is 36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F. The commonly given value 98.6 °F is simply the exact conversion of the nineteenth-century German standard of 37 °C. Since it does not list an acceptable range, it could therefore be said to have excess (invalid) precision.
Some numbers in this table have been rounded.
Graphical representation
Conversion table between the different temperature units
Converting units of temperature differences
Converting units of temperature differences (also referred to as temperature deltas) is not the same as converting absolute temperature values, and different formulae must be used.
To convert a delta temperature from degrees Fahrenheit to degrees Celsius, the formula is
To convert a delta temperature from degrees Celsius to kelvin, it is 1:1
See also
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Outline of metrology and measurement
The following is a topical outline of the English language Wikipedia articles on the topic of metrology and measurement. Metrology is the science of measurement and its application.
Main articles
* Metrology
* Measurement
Metrology overviews
...
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Degree of frost
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Conversion of units
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to incl ...
*
Gas mark
The gas mark is a temperature scale used on gas ovens and cookers in the United Kingdom, Republic of Ireland, Ireland and some Commonwealth of Nations countries.
History
Early gas ovens had no thermostats and it was up to the cook to continuall ...
Notes and references
{{Portal bar, Energy
Scales of temperature
Conversion of units of measurement