In 1 kelvin there are -272.15 celsius. Meanwhile in 1 celsius there are 274.15 kelvin. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Celsius to Kelvin calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert Kelvin to Celsius, use this simple formula:
Subtract 273.15 from the temperature in Kelvin (K) to get degrees Celsius (°C).
Example:
This Kelvin to Celsius conversion works for any value, including decimals.
To convert Kelvin to Celsius, use this formula:
°C = K − 273.15
Kelvin (K) is an absolute temperature scale. Celsius (°C) is based on water’s freezing and boiling points.
Example: 300 K − 273.15 = 26.85 °C
Kelvin and Celsius use the same size degree. The difference is where each scale starts.
The offset between the two scales is 273.15.
No.
Zero Kelvin is the lowest possible temperature. Zero Celsius is a common everyday point on the Celsius scale.
Absolute zero is 0 K, which equals:
−273.15 °C
It marks the point where thermal motion is at its lowest limit.
Yes. A change of 1 K equals a change of 1 °C.
Only the starting point is different.
Example:
No. Kelvin is written without the word “degrees.”
Celsius uses the degree symbol: 26.85 °C.
Here are some useful reference points:
Use the same formula: °C = K − 273.15.
Many lab values use Kelvin for gas laws and thermodynamics. Celsius is often used for reporting room and sample temperatures. Converting helps keep results clear and consistent.
Both scales measure temperature, but they use different zero points.
It depends on your use.
Example: 298.15 K = 25.00 °C (common in lab settings)
Yes. Any Kelvin value below 273.15 K converts to a negative Celsius value.
Example:
250 K − 273.15 = −23.15 °C
The Calculate Box tool to convert kelvin to celsius uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a kelvin value in the box and have it instantly converted to celsius.