Fahrenheit to Kelvin converter (°F to K)
Convert Fahrenheit (°F) to Kelvin (K) 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.
Kelvin to Fahrenheit calculation ►
How to convert Fahrenheit to Kelvin
Converting Fahrenheit to Kelvin is a two-step process: first convert to Celsius, then add 273.15.
T(K) = (T(°F) − 32) × 5÷9 + 273.15
Step 1: convert °F to °C. Step 2: add 273.15 to get Kelvin:
Example: Convert 32°F to Kelvin:
T(K) = (32 − 32) × 5÷9 + 273.15 = 273.15 K
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.
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.
This page converts temperature from Fahrenheit into Kelvin. Use the formula above for the exact relationship between the two units.
How this calculator works
The form on this page is a Fahrenheit-to-Kelvin converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the K 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 K are in 1 °F?
Use the formula in the section above. Temperature and logarithmic units are not a single multiply-by-a-constant step.
How do I convert Fahrenheit to Kelvin?
Step 1: convert °F to °C. Step 2: add 273.15 to get Kelvin:
Is this °F to K 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.