Degrees Fahrenheit to Kelvin
1 degree Fahrenheit = 255.93 kelvin · 1 K = -457.87 °F
1 degree Fahrenheit = 255.93 kelvin
How it’s calculated
K = (°F + 459.67) × 5/9
- Temperature scales have different zero points, so the conversion adds or subtracts an offset as well as scaling.
- 1 °F = 255.9277778 K · 1 K = -457.87 °F
Show worked solutionFactor, unit cancellation and rounding, step by step
Use the exact scale definitions
Temperature scales have different zero points, so this is not a single multiplication: it adds or subtracts an offset as well as scaling. The definitions are exact (0 °C = 273.15 K; 1 °F = 5/9 K; absolute zero = −459.67 °F). Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.).
Step 1: add the offset
Add 459.67 to get degrees Rankine (absolute zero = −459.67 °F).
Step 2: scale
Scale by 5/9 to get kelvin.
Round the answer
Rounded to 5 significant figures.
Answer: 255.93 K · Temperature readings include an offset; for a temperature difference use only the scale factor.
1 °F in other units
Batch convert °F → K
- 1 °F = 255.93 K
- 5 °F = 258.15 K
- 10 °F = 260.93 K
- 25 °F = 269.26 K
Quick examples
- 1 degree Fahrenheit = 255.93 kelvin
- 5 degrees Fahrenheit = 258.15 kelvin
- 10 degrees Fahrenheit = 260.93 kelvin
- 25 degrees Fahrenheit = 269.26 kelvin
- 100 degrees Fahrenheit = 310.93 kelvin
About these units
Degree Fahrenheit (°F)
US customary
T(°F) = T(°C) × 9/5 + 32.
Source: NIST SP 811 / Handbook 44
Kelvin (K)
SI (metric)
SI base unit of thermodynamic temperature; 0 K is absolute zero.
Source: BIPM SI Brochure (9th ed.)
Degrees Fahrenheit to kelvin conversion table
| Degrees Fahrenheit (°F) | Kelvin (K) |
|---|---|
| -40 °F | 233.15 K |
| -20 °F | 244.26 K |
| -10 °F | 249.82 K |
| 0 °F | 255.37 K |
| 5 °F | 258.15 K |
| 10 °F | 260.93 K |
| 15 °F | 263.71 K |
| 20 °F | 266.48 K |
| 25 °F | 269.26 K |
| 30 °F | 272.04 K |
| 35 °F | 274.82 K |
| 37 °F | 275.93 K |
| 40 °F | 277.59 K |
| 50 °F | 283.15 K |
| 60 °F | 288.71 K |
| 80 °F | 299.82 K |
| 100 °F | 310.93 K |
| 150 °F | 338.71 K |
| 180 °F | 355.37 K |
| 200 °F | 366.48 K |
Related conversions
Frequently asked questions
How do I convert degrees Fahrenheit to kelvin?
Use K = (°F + 459.67) × 5/9. Temperature scales have different zero points, so the conversion adds or subtracts an offset as well as scaling.
How many kelvin are in 1 degree Fahrenheit?
1 degree Fahrenheit (°F) equals 255.93 kelvin (K); more precisely 255.9277778.
How many degrees Fahrenheit are in 1 kelvin?
1 kelvin (K) equals -457.87 degrees Fahrenheit (°F).
What is 10 °F in K?
10 degrees Fahrenheit = 260.93 kelvin.
Is the degree Fahrenheit a US or a UK unit?
This converter uses the US customary degree Fahrenheit. T(°F) = T(°C) × 9/5 + 32. US and UK units with the same name can differ, so check which one your source uses.
What is a degree Fahrenheit?
T(°F) = T(°C) × 9/5 + 32.
What is a kelvin?
SI base unit of thermodynamic temperature; 0 K is absolute zero.
Formula: K = (°F + 459.67) × 5/9. Factors last reviewed 2026-10-27.