Celsius to Kelvin Converter
Convert Celsius to Kelvin instantly. Exact scientific converter using K = °C + 273.15.
Common conversions
Result
— K
Conversion formula: K = °C + 273.15
Related conversions
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About Celsius to Kelvin
Quick answer: 0 °C = 273.15 K. Conversion formula: K = °C + 273.15.
Why convert celsius to kelvin?
Kelvin is the SI thermodynamic temperature unit required in physics, chemistry, and engineering calculations involving absolute temperature.
How to use this converter:
1. Confirm the From unit is Celsius (°C) and To is Kelvin (K).
2. Enter any number — the result updates instantly.
3. Edit either field for bidirectional conversion, adjust precision, or tap Swap.
4. Copy the result when you need it in a report, label, or spreadsheet.
Common use cases:
- Thermodynamics homework and research
- Gas law and absolute temperature calculations
- Materials science process specs
Example conversions
| Celsius | Kelvin |
|---|---|
| 0.5 °C | 273.65 K |
| 1 °C | 274.15 K |
| 2 °C | 275.15 K |
| 5 °C | 278.15 K |
| 10 °C | 283.15 K |
| 100 °C | 373.15 K |
Frequently Asked Questions
How do you convert Celsius to Kelvin?
Use the exact temperature formula: K = °C + 273.15. For example, 0 °C = 273.15 K.
How many kelvin are in 1 celsius?
1 °C = 274.15 K.
Is this converter accurate enough for professional use?
Yes. Linear conversions use internationally defined exact factors (SI and customary). Temperature uses exact scale relationships. Always confirm critical safety, medical, or legal measurements against your governing standard or instrument calibration.
Does conversion happen in my browser?
Yes. Values are converted locally in your browser. No account is required and your numbers are not uploaded to a server.
Can I convert Kelvin back to Celsius?
Yes — use the Swap control in the converter to reverse the direction instantly.