Temperature Converter



Temperature Conversion: Convert between Celsius, Kelvin, and Fahrenheit


clickable thermometer

Online Temperature Converter

°F (degrees Fahrenheit)

°C (degrees Celsius or Centigrade)

K (Kelvins)

Always display scientific notation.

Understanding Celsius

Temperature Fun Facts

Temperature Conversion Instructions

Enter a value for any one of the three temperature scales and the others will
automatically be calculated. Javascript must be enabled in your web browser for
calculations to occur.

Significant figures are used. Results are shown only with as many significant
figures as the quantity that was entered. Scientific notation may be used for
large results or if the number of significant digits would be ambiguous otherwise.
The calculator follows proper rounding rules for scientific purposes.

The formulas used to convert between temperatures are as follows:

  • °C = (°F – 32) * 5 / 9
  • °F = (°C * 1.8) + 32
  • K = °C + 273.15
  • °C = K – 273.15

Temperature Converter License

This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
General Public License
for more details.

About Temperature Conversion

The fahrenheit was proposed by Daniel Gabriel Fahrenheit. The scale is often mispelled as “farhenheit”, “farenheit”, “farhenhiet”, or “farenhiet”.

The Celcius scale is still sometimes called the “centigrade” scale because it is divided into 100 divisions. It was devised by Andres Celsius.

Copyright Stephen Ostermiller 2001-2006