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Guide

How to Convert Celsius, Fahrenheit and Kelvin

To convert temperature, enter a value and choose Celsius, Fahrenheit or Kelvin; the Temperature Converter shows the result and the formula used. Fahrenheit equals Celsius times 9/5 plus 32, and Kelvin equals Celsius plus 273.15.

How to use the Temperature Converter

  1. Enter the temperature.
  2. Choose the unit you have.
  3. Choose the unit you want.
  4. Read the result and the formula.

Worked example

100 degrees Celsius is 212 degrees Fahrenheit and 373.15 Kelvin. Body temperature of 98.6 F is 37 C.

Tips and common mistakes

  • Water freezes at 0 C, 32 F and 273.15 K.
  • Kelvin has no degree symbol and cannot go below zero.
  • Temperature differences convert differently from absolute temperatures.

Frequently asked questions

What is the formula for Celsius to Fahrenheit?

Multiply by 9/5 and add 32.

What is absolute zero?

0 Kelvin, which is minus 273.15 degrees Celsius.

Is it private?

Yes.

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