Fahrenheit to Kelvin
Convert fahrenheit to kelvin instantly, with a reference table.
Fahrenheit to Kelvin at a glance
Fahrenheit to Kelvin is a free online converter you can use right now to convert fahrenheit to kelvin instantly, with a reference table โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Unit Conversions
Fahrenheit to Kelvin conversion table
| Fahrenheit (ยฐF) | Kelvin (K) |
|---|---|
| 1 ยฐF | 255.92778 K |
| 2 ยฐF | 256.48333 K |
| 3 ยฐF | 257.03889 K |
| 5 ยฐF | 258.15 K |
| 10 ยฐF | 260.92778 K |
| 25 ยฐF | 269.26111 K |
| 50 ยฐF | 283.15 K |
| 100 ยฐF | 310.92778 K |
| 500 ยฐF | 533.15 K |
| 1000 ยฐF | 810.92778 K |
About Fahrenheit to Kelvin
Convert fahrenheit to kelvin instantly, with a reference table of common values. Because the two scales do not share a zero point, this needs a formula rather than a single multiplier โ the converter applies the exact fahrenheit-to-kelvin conversion for you.
A two-step conversion needed when American-sourced temperature data has to enter a scientific calculation requiring absolute temperature.
Daniel Fahrenheit devised his scale in 1724, setting 0 at the freezing point of a brine solution and 96 at approximate body temperature. Later refinement shifted body temperature to 98.6, which is why the numbers look arbitrary โ they are the residue of a calibration that was itself adjusted. It remains the everyday scale in the United States and a few smaller territories, and persists in older British and Caribbean usage for weather. Water freezes at 32 ยฐF and boils at 212 ยฐF, and a comfortable room is about 70 ยฐF.
Worked through with real numbers: -10 ยฐF is 249.817 K, 0 ยฐF is 255.372 K, 20 ยฐF is 266.483 K, 100 ยฐF is 310.928 K.
As for the other side of the conversion: absolute zero is 0 K, water freezes at 273.15 K, and a kelvin is exactly the same size as a Celsius degree.
Temperature is the one conversion here that needs a formula rather than a single factor, because Celsius and Fahrenheit do not share a zero point. That offset also means a temperature difference converts differently from a temperature: a rise of 10 ยฐC is a rise of 18 ยฐF, not 50 ยฐF.
How to use Fahrenheit to Kelvin
- Enter the number of fahrenheit you want to convert.
- The equivalent in kelvin appears instantly โ there is no button to press.
- Check the reference table for common Fahrenheit to Kelvin values.
Frequently asked questions
How do I convert fahrenheit to kelvin?
Enter a value above and the exact kelvin temperature appears instantly, using the standard fahrenheit-to-kelvin formula.
When would I need to convert fahrenheit to kelvin?
A two-step conversion needed when American-sourced temperature data has to enter a scientific calculation requiring absolute temperature.
What is a fahrenheit, exactly?
Daniel Fahrenheit devised his scale in 1724, setting 0 at the freezing point of a brine solution and 96 at approximate body temperature. Later refinement shifted body temperature to 98.6, which is why the numbers look arbitrary โ they are the residue of a calibration that was itself adjusted. Water freezes at 32 ยฐF and boils at 212 ยฐF, and a comfortable room is about 70 ยฐF.
Where is the kelvin actually used?
It is the SI base unit of temperature, used throughout physics and chemistry, and in lighting to describe colour temperature โ the 2700K on a warm bulb and 6500K on a daylight one. Absolute zero is 0 K, water freezes at 273.15 K, and a kelvin is exactly the same size as a Celsius degree.
Is there anything tricky about temperature conversions?
Temperature is the one conversion here that needs a formula rather than a single factor, because Celsius and Fahrenheit do not share a zero point. That offset also means a temperature difference converts differently from a temperature: a rise of 10 ยฐC is a rise of 18 ยฐF, not 50 ยฐF.
Is this converter accurate?
Yes. It applies the standard scale conversion exactly, with no rounding beyond what is shown.