Convert Celsius to Kelvin
Instant, accurate °C → K conversion with a live converter, table and formula.
1 Celsiu = 274.15 Kelvin
Celsius to Kelvin table
| Celsius (°C) | Kelvin (K) |
|---|---|
| 0.5 | 273.65 |
| 1 | 274.15 |
| 2 | 275.15 |
| 5 | 278.15 |
| 10 | 283.15 |
| 20 | 293.15 |
| 50 | 323.15 |
| 100 | 373.15 |
| 500 | 773.15 |
| 1000 | 1273.15 |
Formula
This is a non-linear conversion — use the converter above or the table below for exact values. As a reference, 1 Celsius = 274.15 Kelvin.
Example
10 Celsius = 283.15 Kelvin.
What is a Celsiu?
Celsius (°C) sets water's freezing point at 0° and boiling at 100°.
What is a Kelvin?
Kelvin (K) is the SI temperature scale starting at absolute zero (0 K = −273.15°C).
Real-world reference points
Room comfort sits near 21°C / 70°F; body temperature near 37°C / 98.6°F; water boils at 100°C / 212°F at sea level.
| Reference | Celsius | Kelvin |
|---|---|---|
| Home freezer | -18 °C | 255 K |
| Comfortable room | 21 °C | 294 K |
| Body temperature | 37 °C | 310 K |
| Hot summer day | 40 °C | 313 K |
| Baking oven | 180 °C | 453 K |
| Water boils (sea level) | 100 °C | 373 K |
Mistakes to avoid with temperature conversions
- Doubling °C does not double °F — the scales have different zero points; use the formula, not proportion.
- Forgetting −40 is the one temperature where Celsius and Fahrenheit agree.
- Writing 'degrees Kelvin' — Kelvin is an absolute scale with no degree sign (300 K, not 300°K).
Frequently asked questions
How many Kelvin in a Celsius?+
1 Celsiu = 274.15 Kelvin.
How do I convert Celsius to Kelvin?+
Enter the value in the Celsius box above and the Kelvin value appears instantly. You can also type in the Kelvin box to convert the other way.
Is this °C to K converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.