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Converters • Temperature Converter

Celsius to Kelvin Conversion Calculator

The Kelvin (K) is the SI base unit of thermodynamic temperature. Absolute zero (0 K) is the lowest possible theoretical temperature, equal to -273.15°C.

Converted Result
274.15 K
1 °C = 274.15 K

Equivalent Values in Other Units

Fahrenheit
33.8 °F
Rankine
493.47 °R
Reverse Conversion Available
Kelvin to Celsius Converter (K to °C)
Convert K to °C
Formula & Calculation Method

To convert Celsius to Kelvin, add exactly 273.15 to the Celsius temperature.

Conversion Formula
K = °C + 273.15
Step-by-Step Worked Example

25°C + 273.15 = 298.15 K (standard room temperature in physics).

Celsius to Kelvin Conversion Table

Quick reference values for common celsius measurements.

1 °C = 274.15 K
Celsius (°C)Kelvin (K)
-273.15 °C0 K
-100 °C173.15 K
-50 °C223.15 K
0 °C273.15 K
20 °C293.15 K
25 °C298.15 K
37 °C310.15 K
50 °C323.15 K
100 °C373.15 K
200 °C473.15 K
500 °C773.15 K
1,000 °C1,273.15 K

Related Temperature Converter Conversions

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Frequently Asked Questions

Absolute zero (0 K) is exactly -273.15°C.