Kelvin to Fahrenheit converter (K to °F)
Convert Kelvin (K) to Fahrenheit (°F) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
How to convert Kelvin to Fahrenheit
0 Kelvin (absolute zero) is equal to −459.67 degrees Fahrenheit.
T(°F) = (T(K) − 273.15) × 9÷5 + 32
Subtract 273.15 from Kelvin to get Celsius, then multiply by 9÷5 and add 32:
Example: Convert 293.15 K to Fahrenheit:
T(°F) = (293.15 − 273.15) × 9÷5 + 32 = 68°F
What is a Kelvin?
The kelvin (K) is the SI unit of thermodynamic temperature. Zero kelvin is absolute zero; a kelvin interval equals a Celsius degree.
What is a Fahrenheit?
Fahrenheit (°F) is the temperature scale used in the United States. Water freezes at 32 °F and boils at 212 °F.
This page converts temperature from Kelvin into Fahrenheit. Use the formula above for the exact relationship between the two units.
How this calculator works
The form on this page is a Kelvin-to-Fahrenheit converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the °F result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many °F are in 1 K?
Use the formula in the section above. Temperature and logarithmic units are not a single multiply-by-a-constant step.
How do I convert Kelvin to Fahrenheit?
Subtract 273.15 from Kelvin to get Celsius, then multiply by 9÷5 and add 32:
Is this K to °F converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.