Kelvin to Celsius (K → °C) Conversion
to
Kelvin
K
Result
Calculation steps
About this conversion
Intro
This page converts kelvin (K) to celsius (°C). Use it when your temperature is given in kelvin and you need the equivalent in celsius for reports, engineering work, or everyday reference.
Definition
Temperature measures how hot or cold something is and is used in weather, cooking, manufacturing, HVAC, chemistry, and engineering. Quick context on celsius: Celsius (°C) is the most widely used everyday temperature scale globally. Water freezes at 0 °C and boils at 100 °C (at standard atmospheric pressure).
Formula: Kelvin to Celsius
C = K - 273.15
Subtract 273.15 to convert Kelvin to Celsius.
Worked examples
Example 1: 273.15 K → 0 °C
- Start with 273.15 K.
- Apply the conversion formula.
- Result: 0 °C.
Example 2: 298.15 K → 25 °C
- Start with 298.15 K.
- Apply the conversion formula.
- Result: 25 °C.
Example 3: 373.15 K → 100 °C
- Start with 373.15 K.
- Apply the conversion formula.
- Result: 100 °C.
Quick reference table
| From | To |
|---|---|
| 0 K | -273.15 °C |
| 233.15 K | -40 °C |
| 273.15 K | 0 °C |
| 293.15 K | 20 °C |
| 298.15 K | 25 °C |
| 310.15 K | 37 °C |
| 373.15 K | 100 °C |
| 400 K | 126.85 °C |
FAQs
How do I convert Kelvin to Celsius?
Use the formula shown above and enter your value in the converter. It will calculate the equivalent in Celsius (°C) instantly.
What is Celsius (°C) used for?
Celsius (°C) is the most widely used everyday temperature scale globally. Water freezes at 0 °C and boils at 100 °C (at standard atmospheric pressure).
Why does temperature conversion use “+32” or “+459.67”?
Temperature scales can have different zero points. Fahrenheit and Rankine use offsets relative to Celsius/Kelvin, so conversions include an addition/subtraction step.
Is Centigrade the same as Celsius?
Yes. Centigrade is a historical/alternate name for the Celsius scale, and the numeric values are the same.
Which unit is absolute: Celsius/Fahrenheit or Rankine?
Rankine is an absolute scale (like Kelvin). Celsius and Fahrenheit are relative scales that don’t start at absolute zero.
Do these conversions depend on pressure (like boiling point)?
The unit conversion itself does not depend on pressure. However, physical phenomena like boiling/freezing points can change with pressure—this tool only converts units.