The formula
To convert K to °F, use: °F = (K − 273.15) × 9/5 + 32
Kelvin to Fahrenheit
Convert K to °F instantly — with the formula, a table, key reference temperatures, and a live calculator.
100 K equals -279.67 °F.
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Result (°F)
K to °F table
| K | °F |
|---|---|
| 0 K | -459.67 °F |
| 100 K | -279.67 °F |
| 200 K | -99.67 °F |
| 250 K | -9.67 °F |
| 273.15 K | 32 °F |
| 293.15 K | 68 °F |
| 300 K | 80.33 °F |
| 310.15 K | 98.6 °F |
| 373.15 K | 212 °F |
°F to K (reverse)
| °F | K |
|---|---|
| -40 °F | 233.15 K |
| 0 °F | 255.37 K |
| 14 °F | 263.15 K |
| 32 °F | 273.15 K |
| 50 °F | 283.15 K |
| 68 °F | 293.15 K |
| 77 °F | 298.15 K |
| 86 °F | 303.15 K |
| 98.6 °F | 310.15 K |
| 100 °F | 310.93 K |
| 104 °F | 313.15 K |
| 122 °F | 323.15 K |
| 212 °F | 373.15 K |
Key temperatures
| Reference point | K | °F |
|---|---|---|
| Absolute zero | 0 K | -459.67 °F |
| Freezing point of water | 273.15 K | 32 °F |
| Comfortable room | 294.15 K | 69.8 °F |
| Body temperature | 310.15 K | 98.6 °F |
| Hot summer day | 313.15 K | 104 °F |
| Boiling point of water | 373.15 K | 212 °F |
How it scales
Freezing, body & boiling point
K (K)°F (°F)
Reference points in °F
Why temperature conversions need an offset
Unlike length or speed, temperature scales have different zero points. Celsius starts at water's freezing point (0 °C), Kelvin at absolute zero (0 K = −273.15 °C), and Fahrenheit at a historical reference (0 °F ≈ −17.8 °C). That is why a single multiplier is not enough — you also need an offset.
Absolute zero is 0 K = −273.15 °C = −459.67 °F — nothing can be colder. For more pairs, use our temperature conversion hub.
Related conversions
Frequently asked questions
How do I convert K to °F?
Use the formula °F = (K − 273.15) × 9/5 + 32. For example, 300 K equals 80.33 °F.
What is the formula for K to °F?
The exact conversion formula is: °F = (K − 273.15) × 9/5 + 32.
What is 373.15 K in °F?
373.15 K equals 212 °F.
What is absolute zero?
Absolute zero is the lowest possible temperature: 0 K = −273.15 °C = −459.67 °F. Nothing can be colder.
Why can't I convert temperatures with a single factor?
Temperature scales have different zero points. Celsius starts at water's freezing point, Kelvin at absolute zero, and Fahrenheit at a historical reference. That is why conversions need an offset, not just a multiplier.
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