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Fahrenheit to Kelvin Converter

To convert degrees fahrenheit to kelvin, use K = F × 255.9277777778. This Fahrenheit to Kelvin page gives a calculator, formula, table, and worked example for F to K. It also explains the fahrenheit to kelvin relationship so you can convert degrees fahrenheit to kelvin quickly and check the result.

Use this page to convert degrees fahrenheit to kelvin, compare F to K, and check the fahrenheit to kelvin conversion with a formula, examples, and a reference table.

Convert degrees fahrenheit to kelvin

Result: 1 Fahrenheit = 255.9277777778 Kelvin

Explain this result

The calculator converts 1 Fahrenheit to Kelvin and formats the result as 255.9277777778 Kelvin.

  1. First convert to Celsius: (1 - 32) x 5 / 9 = -17.2222222222 Celsius.
  2. Then convert Celsius to Kelvin: -17.2222222222 + 273.15 = 255.9277777778 Kelvin.

Formula

Convert Fahrenheit to Celsius, then convert Celsius to Kelvin.

Fahrenheit to Kelvin Formula

K = F × 255.9277777778
F = K ÷ -0.002184026
1 F = 255.9277777778 K
1 K = -457.87 F

Fahrenheit to Kelvin Example

Example: convert -40 degrees fahrenheit to kelvin

Formula: K = F × 255.9277777778

Calculation: -40 × 255.9277777778 = 233.15 -> -40 degrees fahrenheit = 233.15 kelvin

Result: -40 degrees fahrenheit = 233.15 kelvin

Fahrenheit to Kelvin Conversion Table

Degrees Fahrenheit (F)Kelvin (K)
-40 F233.15 K
0.01 F255.3777777778 K
0.1 F255.4277777778 K
1 F255.9277777778 K
2 F256.4833333333 K
5 F258.15 K
10 F260.9277777778 K
12 F262.0388888889 K
32 F273.15 K
68 F293.15 K

When this temperature conversion is useful

  • Comparing weather, thermostat, cooking, appliance, and equipment settings.
  • Reading a lab, classroom, or technical value written in another temperature scale.
  • Checking a Fahrenheit/Celsius value before setting an oven or process target.

Rounding temperature results

  • Whole degrees are usually enough for weather and comfort settings.
  • Use one decimal place or more when a recipe, lab, or calibration range is narrow.
  • Remember that temperature conversions use offsets, so rounding before the offset can change the result.

Temperature conversion mistakes

  • Using a simple multiplier instead of the Celsius/Fahrenheit offset formula.
  • Confusing a temperature value with a temperature change.
  • Forgetting that Kelvin is an absolute scale.

What is a fahrenheit?

The symbol for fahrenheit is F.

Fahrenheit is a temperature scale where water freezes at 32 and boils at 212 at standard atmospheric pressure.

It is commonly used for weather forecasts, ovens, thermostats, body temperature, and appliances in the United States.

Fahrenheit to Celsius uses C = (F - 32) x 5/9.

What is a kelvin?

The symbol for kelvin is K.

kelvin is a temperature unit supported by this converter. The symbol for kelvin is K.

Kelvin are used when comparing temperature values in calculators, reference tables, and technical notes.

This page uses the temperature conversion factor stored for kelvin to keep results consistent across the calculator and table.

Fahrenheit to Kelvin FAQ

How do you convert fahrenheit to kelvin?

To convert degrees fahrenheit to kelvin, use K = F × 255.9277777778. This is the main F to K formula used by the calculator and table.

What is 1 fahrenheit in kelvin?

1 F equals 255.9277777778 K.

How many degrees fahrenheit are in 1 kelvin?

1 K equals -457.87 F.

What does F to K mean?

F to K is the abbreviated form of fahrenheit to kelvin. It uses F for fahrenheit and K for kelvin.

More temperature conversions

Reverse conversion

  • Kelvin to Fahrenheit

Convert degrees fahrenheit to other units

  • Fahrenheit to Celsius

Convert other units to kelvin

  • Celsius to Kelvin

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