Select a category
Conversion Formula:
Convert Fahrenheit to Kelvin (°F to K) instantly with accurate, readable results.
Accurately convert temperatures between Celsius, Fahrenheit, Kelvin, and other scales with our Temperature Unit Converter. Ideal for science, weather monitoring, cooking, and engineering, this tool ensures fast and reliable temperature unit conversions
Fahrenheit (°F) — a temperature scale used mainly in the United States
It is defined by an exact linear relation to the Celsius and kelvin scales; one degree Fahrenheit is 5/9 of a kelvin or degree Celsius, with water freezing at 32 °F and boiling at 212 °F under standard conditions. Used mainly in the United States and some territories for weather, cooking, body temperature, HVAC, and everyday temperature measurements.
- Symbol: °F
- System: US customary temperature scale
- Exact relations: °F = (°C × 9/5) + 32; °C = (°F − 32) × 5/9; K = (°F + 459.67) × 5/9
- Celsius equivalents: 32 °F = 0 °C; 68 °F = 20 °C; 98.6 °F = 37 °C; 212 °F = 100 °C
- Typical examples: freezing weather starts around 32 °F; comfortable room temperature ~68–72 °F; normal human body temperature ~98.6 °F.
Kelvin (K) — the SI base unit of thermodynamic temperature
It is defined by fixing the Boltzmann constant at exactly 1.380649×10⁻²³ J/K; zero kelvin is absolute zero, the lowest possible thermodynamic temperature. Used worldwide in science, engineering, physics, chemistry, astronomy, materials science, cryogenics, and temperature calculations.
- Symbol: K
- System: SI base unit for thermodynamic temperature
- Exact relations: K = °C + 273.15; °C = K − 273.15
- Fahrenheit equivalents: °F = (K × 9/5) − 459.67; 273.15 K = 32 °F; 373.15 K = 212 °F
- Typical examples: absolute zero is 0 K; water freezes at 273.15 K; room temperature is about 293–295 K.