Convert between Kelvin and Celsius. Essential for scientific calculations and temperature analysis.
Kelvin to Celsius conversion translates an absolute temperature scale into a relative scale based on everyday reference points. Both scales have the same degree size (a 1 K change equals a 1°C change), but differ in their zero point.
Kelvin starts at absolute zero (the lowest possible temperature, where all molecular motion stops), while Celsius sets 0° at water's freezing point.
Notation note: Kelvin is written as K (not °K), while Celsius uses °C.
The relationship is simple: °C = K − 273.15. This offset of 273.15 is what maps Kelvin's absolute zero to Celsius's −273.15°C.
This conversion is essential when translating scientific measurements (which use Kelvin) into everyday temperature scales for cooking, weather, or everyday contexts.
Subtract 273.15 to shift from absolute zero baseline to water's freezing point baseline. The 273.15 offset is the exact difference between the two scales' zero points.
Add 273.15 to convert Celsius back to Kelvin.
Convert 273.15 K to Celsius (step-by-step)
Step 1: Take the Kelvin value
Step 2: Subtract 273.15
| Kelvin | Celsius |
|---|---|
| 0 K | -273.15 °C |
| 223.15 K | -50 °C |
| 273.15 K | 0 °C |
| 283.15 K | 10 °C |
| 293.15 K | 20 °C |
| 298.15 K | 25 °C |
| 310.15 K | 37 °C |
| 323.15 K | 50 °C |
| 373.15 K | 100 °C |
| 773.15 K | 500 °C |
It's the exact difference between absolute zero (Kelvin's reference) and water's freezing point (Celsius's reference).
Subtract 273.15 from the Kelvin value.
-273.15°C (absolute zero).
Kelvin is an absolute scale, making it ideal for thermodynamic equations.
Around 293-298 K (20-25°C).
0°C (freezing point of water).
Yes, Celsius can go below zero.
310.15 K (37°C or 98.6°F).
100°C (boiling point of water).
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