Celsius to Kelvin Conversion Table
-273 to 1000°C — scientific and engineering reference
Any temperature value in °C can be converted to K using the conversion factor:
- 1 Celsius = 274.15 Kelvin
- K = °C + 273.15
°C → K Quick Converter
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What is Celsius (°C)?
The degree Celsius (°C) is the SI-derived unit of temperature. It is defined so that 0 °C = 273.15 K exactly, with the same unit increment as the kelvin.
What is Kelvin (K)?
The kelvin (K) is the SI base unit of thermodynamic temperature. Since the 2019 SI redefinition, it is defined by fixing the Boltzmann constant at exactly 1.380 649 × 10⁻²³ J/K.
How to Convert Celsius to Kelvin
Example
Convert -153 °C to K:
-153 °C = 120.15 K
Celsius to Kelvin Conversion Table
Values from -273 to 1,000 °C.
Frequently Asked Questions
What is absolute zero in Celsius?
Absolute zero is -273.15°C, which equals 0 K. It is the lowest possible temperature where all molecular motion ceases. Nothing can be cooled below this temperature.
What is 0°C in Kelvin?
0°C equals 273.15 K. This is the freezing point of water at standard atmospheric pressure. To convert any Celsius value to Kelvin, simply add 273.15.
What is room temperature in Kelvin?
Room temperature is typically around 20-25°C, which equals 293.15-298.15 K. In scientific contexts, standard ambient temperature is often defined as 25°C (298.15 K).
Why does the Kelvin scale not use degree symbol?
The Kelvin scale is an absolute thermodynamic scale, not a relative one. The unit is simply "kelvin" (K), not "degree kelvin." This convention was adopted by the International System of Units (SI) in 1967 to distinguish it from relative scales like Celsius and Fahrenheit.
Why is Kelvin used in science?
Kelvin is the SI base unit for temperature and starts at absolute zero, making it ideal for scientific calculations. Many physical laws (gas laws, thermodynamics, radiation) require an absolute temperature scale to work correctly.
