Kelvin to Celsius (K to °C)
Free online kelvin to celsius 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: °C = K − 273.15
Kelvin to Celsius conversion table
| Kelvin (K) | Celsius (°C) |
|---|---|
| 1 K | -272.15 °C |
| 2 K | -271.15 °C |
| 3 K | -270.15 °C |
| 4 K | -269.15 °C |
| 5 K | -268.15 °C |
| 6 K | -267.15 °C |
| 7 K | -266.15 °C |
| 8 K | -265.15 °C |
| 9 K | -264.15 °C |
| 10 K | -263.15 °C |
| 15 K | -258.15 °C |
| 20 K | -253.15 °C |
| 25 K | -248.15 °C |
| 30 K | -243.15 °C |
| 40 K | -233.15 °C |
| 50 K | -223.15 °C |
| 75 K | -198.15 °C |
| 100 K | -173.15 °C |
| 250 K | -23.15 °C |
| 500 K | 226.85 °C |
| 1,000 K | 726.85 °C |
How to convert kelvin to celsius
Temperature scales have different zero points, so use the formula shown: °C = K − 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 celsius are in one kelvin?
Use the converter above — enter 1 in the value field and select Kelvin → Celsius.
How do I convert K to °C?
Enter your value above and choose Kelvin as the source and Celsius as the target unit.
Is this K to °C converter free?
Yes — every ToolsEngg converter is free, runs entirely in your browser, and requires no sign-up.