Kelvin to Fahrenheit
F = (K - 273.15) * 9/5 + 32
Converter Calculator
1 Kelvin (K) = -457.87 Fahrenheit (°F)
Explanation
Use the exact affine transform: subtract 273.15, multiply by 9/5, then add 32.
Common Conversion Values
| Kelvin (K) | Fahrenheit (°F) |
|---|---|
| -40 | -531.67 |
| -20 | -495.67 |
| 0 | -459.67 |
| 20 | -423.67 |
| 32 | -402.07 |
| 37 | -393.07 |
| 50 | -369.67 |
| 100 | -279.67 |
| 212 | -78.07 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
What formula does this page use?
This page uses the exact formula: F = (K - 273.15) * 9/5 + 32.
How do I switch to the reverse conversion?
Use Switch Units to open the mirror page. The current input value is carried into that page.
Can I enter negative values?
Yes. Negative inputs are supported for Celsius and Fahrenheit scenarios and to inspect the formula output directly.