Convert Fahrenheit (°F) (fahrenheit) to Kelvin (K) (kelvin)
Category: Temperature
0.5 fahrenheit = 255.65 kelvin
High-precision rounding: 6 decimals
How to convert fahrenheit (°f) to kelvin (k)
We convert by pivoting through the SI base unit for Temperature and applying exact factors where applicable.
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Examples
Formula: K = (°F + 459.67) × 5/9
Temperature conversions use exact affine formulas (ratio + offset).
Common mistakes
- Using only a ratio (×1.8 or ×0.555…) without adding/subtracting the offset (±32, +273.15).
- Rounding too early; convert first, then round to the desired precision.
About Temperature
Temperature scales combine ratios and offsets. Kelvin is absolute (no negative values), Celsius offsets Kelvin by 273.15, and Fahrenheit uses a different step and zero point. Because offsets exist, temperature conversions require both a factor and an addition/subtraction.
About Fahrenheit (°F)
Fahrenheit (°F)
Offset scale with 32 °F as water’s freezing point and 212 °F as boiling at 1 atm. Offers finer granularity per degree for everyday weather reporting in the US.
History: Proposed by Daniel G. Fahrenheit in the 18th century; based on calibration points available at the time.
About Kelvin (K)
Kelvin (K)
Absolute SI scale starting at 0 K with no negative values. Used for thermodynamics, cryogenics, and color temperature (K).
History: Defined via the Boltzmann constant since 2019, linking temperature directly to energy at the particle level.
Related conversions from fahrenheit
- fahrenheit → celsius Celsius (°C)
- fahrenheit → rankine Rankine (°R)
Related conversions to kelvin
- celsius → kelvin Celsius (°C)
- rankine → kelvin Rankine (°R)