Kelvin to Celsius
Convert Kelvin to Celsius
Frequently Asked Questions
How do I convert Kelvin to Celsius?
Subtract 273.15. 300 K = 26.85°C. 0 K = -273.15°C (absolute zero). The Kelvin scale uses the same degree size as Celsius but starts at absolute zero. The converter handles K, °C, and °F.
What is absolute zero?
Absolute zero (0 K = -273.15°C = -459.67°F) is the lowest possible temperature where all molecular motion stops. It cannot be reached in practice but has been approached to within billionths of a degree in laboratories.
Why do scientists use Kelvin?
Kelvin has no negative values, making it ideal for physics equations. Gas laws, thermodynamics, and radiation calculations require absolute temperature. Doubling Kelvin means doubling thermal energy, which is not true for Celsius or Fahrenheit.
What is color temperature in Kelvin?
Light color temperature: 2700K = warm white (incandescent), 4000K = neutral white, 5500K = daylight, 6500K = cool daylight. Higher Kelvin = bluer light. This is used for lighting, photography, and display calibration.
How do I convert Kelvin to Fahrenheit?
°F = (K - 273.15) × 9/5 + 32. Or equivalently: °F = K × 9/5 - 459.67. Room temperature: 293 K = 68°F. Body temperature: 310 K = 98.6°F. The converter handles all three scales simultaneously.