Formula
°C to K conversion formula
Use this relationship for a direct conversion:
K = (°C x 1) + 273.15
Worked example
10 °C = 283.15 K.
The kelvin-to-Celsius offset and Fahrenheit scale relationship are exact by definition.
Temperature conversion
Convert Celsius to Kelvin
1 celsius (°C) equals 274.15 kelvin (K). Enter any value below to convert from °C to K.
Enter a value and choose units. Results update instantly.
1 °C = 274.15 K
All Temperature units
From 1 °C| Unit | Value |
|---|---|
| Celsius °C | 1 |
| Fahrenheit °F | 33.8 |
| Kelvin K | 274.15 |
| Rankine °R | 493.47 |
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Quick reference
Celsius to Kelvin table
| Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -20 | 253.15 |
| 0 | 273.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 37 | 310.15 |
| 50 | 323.15 |
| 100 | 373.15 |
From unit
About the celsius
A derived temperature scale with 0 degrees at 273.15 kelvins.
Symbol: °C
To unit
About the kelvin
The SI base unit of thermodynamic temperature.
Symbol: K
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Source
Conversion standard
Definitions are checked against BIPM SI Brochure: thermodynamic temperature. Calculations use full internal precision before display rounding.
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°C to K FAQ
How do you convert celsius to kelvin?
Use the formula K = (°C x 1) + 273.15. 1 celsius (°C) equals 274.15 kelvin (K).
Is the °C to K conversion exact?
The kelvin-to-Celsius offset and Fahrenheit scale relationship are exact by definition.