Kelvin to Celsius Converter
Convert between Kelvin, Celsius, and Fahrenheit temperature scales
Input Temperature
Enter temperature and select units
Quick Conversions
Common Temperatures
Conversion Result
All Conversions
273.15 K equals:
Scientific Temperatures
Click to convert scientific reference points
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About Kelvin Temperature Scale
What is Kelvin?
Kelvin (K) is the base unit of temperature in the International System of Units (SI). It is an absolute temperature scale, meaning it starts at absolute zero (0K), the theoretical point where all molecular motion stops. Unlike Celsius and Fahrenheit, Kelvin has no negative values.
Conversion Formulas
Key Reference Points
Why Use Kelvin?
- Required for thermodynamic calculations and gas laws
- No negative values - simplifies mathematical operations
- Standard in physics, chemistry, and engineering
- Used in astronomy to measure stellar temperatures
- Essential for cryogenics and low-temperature physics
Common Applications
- Scientific research and laboratory work
- Thermodynamic calculations (PV=nRT)
- Color temperature in photography and lighting
- Astronomy and astrophysics
- Cryogenics and superconductivity
- Material science and metallurgy
Why 273.15?
The Kelvin scale is offset from Celsius by exactly 273.15 degrees. This value was chosen so that the triple point of water (where ice, liquid water, and water vapor coexist) occurs at exactly 273.16K. The size of one Kelvin is identical to one degree Celsius, making conversions simple.