Celsius to Kelvin (°C to K)
Free online celsius to kelvin converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
TEMPERATURE CONVERTER — INSTANT RESULT
Formula: K = °C + 273.15
Celsius to Kelvin conversion table
| Celsius (°C) | Kelvin (K) |
|---|---|
| 1 °C | 274.15 K |
| 2 °C | 275.15 K |
| 3 °C | 276.15 K |
| 4 °C | 277.15 K |
| 5 °C | 278.15 K |
| 6 °C | 279.15 K |
| 7 °C | 280.15 K |
| 8 °C | 281.15 K |
| 9 °C | 282.15 K |
| 10 °C | 283.15 K |
| 15 °C | 288.15 K |
| 20 °C | 293.15 K |
| 25 °C | 298.15 K |
| 30 °C | 303.15 K |
| 40 °C | 313.15 K |
| 50 °C | 323.15 K |
| 75 °C | 348.15 K |
| 100 °C | 373.15 K |
| 250 °C | 523.15 K |
| 500 °C | 773.15 K |
| 1,000 °C | 1,273.15 K |
How to convert celsius to kelvin
Temperature scales have different zero points, so use the formula shown: K = °C + 273.15.
Convert between Celsius, Fahrenheit, Kelvin, Rankine and Réaumur temperature scales. Temperature conversion uses affine formulas rather than multiplication because the scales have different zero points.
Frequently asked questions
How many kelvin are in one celsius?
Use the converter above — enter 1 in the value field and select Celsius → Kelvin.
How do I convert °C to K?
Enter your value above and choose Celsius as the source and Kelvin as the target unit.
Is this °C to K converter free?
Yes — every ToolsEngg converter is free, runs entirely in your browser, and requires no sign-up.