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Fahrenheit (F) → Kelvin (K)

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Use our free online converter to convert between units instantly. Enter any value in the field above to get accurate results. No signup or download required—all conversions run in your browser. Our calculator uses standard conversion factors for reliability.

255.4°
F°=K°
0=255.372222
5=258.15
10=260.927778
15=263.705556
20=266.483333
25=269.261111
30=272.038889
37=275.927778
50=283.15
100=310.927778

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Brief explanation: Fahrenheit to Kelvin

Celsius (C) is used globally for weather and daily life. Fahrenheit (F) is common in the USA. Kelvin (K) is used in science. Water boils at 100°C/212°F and freezes at 0°C/32°F. Normal body temperature is about 37°C or 98.6°F. To convert Celsius to Fahrenheit: multiply by 9/5 and add 32. To convert Fahrenheit to Celsius: subtract 32 and multiply by 5/9.

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Common conversion examples: Fahrenheit to Kelvin

Reference values for quick comparison. Use the converter above for any amount.

  • 32 Fahrenheit=273.15 Kelvin
  • 77 Fahrenheit=298.15 Kelvin
  • 212 Fahrenheit=373.15 Kelvin

About the Units

Fahrenheit (F)

Definition: Fahrenheit (°F) is a temperature scale where water freezes at 32°F and boils at 212°F. It is used primarily in the United States for weather, cooking, and some industrial applications.
History: Daniel Gabriel Fahrenheit proposed the scale in 1724. He set 0°F at the coldest mixture he could create and 96°F at human body temperature. The scale was later recalibrated using water's freezing and boiling points.
Current use: Fahrenheit is used for weather forecasts and cooking in the US. Oven temperatures and thermostats in the US often use Fahrenheit. Most other countries use Celsius.

Kelvin (K)

Definition: Kelvin (K) is the base unit of temperature in the SI system. Zero Kelvin (absolute zero) is the lowest possible temperature. The Kelvin scale has the same increment as Celsius but starts at absolute zero.
History: Lord Kelvin proposed the scale in 1848. It is based on absolute zero, the point at which molecular motion ceases. The kelvin was redefined in 2019 using the Boltzmann constant.
Current use: Kelvin is used in physics, chemistry, and astronomy. Scientific research and thermodynamic calculations use Kelvin. It is not used for everyday weather—Celsius or Fahrenheit are used instead.

Sources

Conversion factors and unit definitions follow international standards. For authoritative references, see: