celsius to kelvin
How do you convert Celsius to Kelvin?
To convert Celsius to Kelvin, add exactly 273.15 to the Celsius temperature. For example, a temperature of 25°C equals 25 + 273.15, which is exactly 298.15 K. Kelvin is the official SI unit of thermodynamic temperature and has no degree symbol. It is indispensable for gas laws, physical chemistry, astrophysics, and high-tech cryogenic research.
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❓ Frequently Asked Questions (FAQ)
What is the formula for converting Celsius to Kelvin?▼
The formula is: Kelvin = Celsius + 273.15.
What temperature is absolute zero in Celsius?▼
Absolute zero is exactly -273.15°C (which is 0 K).
Why is there no "degree Kelvin"?▼
Kelvin is an absolute thermodynamic scale, not a relative scale; hence, temperature is referred to as Kelvin (K), not degrees Kelvin.
What is 0°C (freezing point of water) in Kelvin?▼
0°C is exactly 273.15 K.
What is 100°C (boiling point of water) in Kelvin?▼
100°C is exactly 373.15 K.
Can Kelvin have negative values?▼
No. Absolute zero (0 K) is the lowest possible physical temperature where atomic movement virtually stops; negative Kelvin is physically impossible on classical scales.