How to Convert Fahrenheit to Kelvin (°F to K)
Temperature conversions help with American oven recipes in Fahrenheit, weather apps set to the wrong unit, and science homework that uses kelvin. This guide shows how to convert fahrenheit into kelvin by hand, with examples and a quick-reference table.
The conversion
Temperature scales have different zero points, so you cannot use a single multiplier. Convert through kelvin: °F converted through kelvin: (((°F-32)*5/9+273.15)).
°F converted through kelvin: (((°F-32)*5/9+273.15))
Worked examples
- 15 °F = 263.7056 K
- 32 °F = 273.15 K
- 100 °F = 310.9278 K
Fahrenheit to Kelvin table
| Fahrenheit | Kelvin |
|---|---|
| -40 °F | 233.15 K |
| -10 °F | 249.8167 K |
| 0 °F | 255.3722 K |
| 10 °F | 260.9278 K |
| 20 °F | 266.4833 K |
| 25 °F | 269.2611 K |
| 30 °F | 272.0389 K |
| 37 °F | 275.9278 K |
| 50 °F | 283.15 K |
| 100 °F | 310.9278 K |
| 200 °F | 366.4833 K |
Common questions
Is °F to K exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Kelvin to Fahrenheit converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For any value, use the Fahrenheit to Kelvin Converter or browse all temperature converters.
Run your own numbers: Fahrenheit to Kelvin Converter