Celsius to Kelvin Converter

Convert °C to K instantly. Free online converter.

Formula: K = °C + 273.15

Formula: K = °C + 273.15  |  °C = K − 273.15

Common Temperature Conversions

Description Celsius (°C) Kelvin (K)
Absolute Zero−273.15 °C0 K
Liquid Nitrogen−196 °C77.15 K
Dry Ice−78.5 °C194.65 K
Water Freezes0 °C273.15 K
Room Temperature20 °C293.15 K
Human Body37 °C310.15 K
Water Boils100 °C373.15 K
Oven (Hot)200 °C473.15 K
Iron Melts1538 °C1811.15 K
Sun Surface5500 °C5773.15 K

How to Convert Celsius to Kelvin

To convert Celsius to Kelvin, simply add 273.15: K = °C + 273.15

For example, 25 °C = 25 + 273.15 = 298.15 K

To convert Kelvin to Celsius, subtract 273.15: °C = K − 273.15

💡 The Kelvin scale starts at absolute zero (0 K = −273.15 °C). A degree change in Celsius equals a degree change in Kelvin. All calculations happen locally in your browser.

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