Converters
12
Celsius to Kelvin Converter
Convert celsius to kelvin instantly with the formula, worked examples, rounding guidance, and related temperature conversions.
Units
85
Mode
Live
Pair-specific conversion guide
Celsius to Kelvin formula
Converting Celsius to Kelvin is straightforward: add 273.15 to the Celsius value. This scale starts at absolute zero, making Kelvin the standard for scientific temperature measurements. For example, 1°C equals 274.15 K, and 10°C equals 283.15 K.
Formula model
K = C + 273.15
1 Celsius equals
Quick factor: 1 deg C = 274.15 K.
Always add exactly 273.15, not 273, for precise scientific calculations.
Remember that Kelvin has no degree symbol; write 'K' not '°K'.
Temperature conversions can include both a scale and an offset, so a multiplication factor alone is not always sufficient.
Precision and rounding
The calculation uses the catalog's fixed scale and offset definitions between deg C and K. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsTemperature
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Conversion table
1 Celsius equals
| Unit | Value |
|---|---|
| Fahrenheit deg F | 33.8 |
| Kelvin K | 274.15 |
FAQ
Celsius to Kelvin questions
Why is 273.15 added instead of 273?
The exact offset between Celsius and Kelvin is 273.15, based on the definition of absolute zero at -273.15°C.
Can Kelvin values be negative?
No, Kelvin is an absolute scale starting at 0 K, so negative values are not possible.