Quick answer: 1 Celsius in Kelvin
1 °C equals 274.15 K. Use the free calculator above for any value — it applies the exact Celsius–Kelvin formula with no signup needed.
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About Temperature Converter
The Temperature Converter converts between 4 different units, including Celsius, Fahrenheit, Kelvin, Rankine. The base unit is the Celsius, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Celsius = 33.8 Fahrenheit, 274.15 Kelvin, 493.47 Rankine.
Last updated: 2026-09-15
Temperature conversion factors
| Unit | Symbol | Value in Celsius |
|---|---|---|
| Celsius | °C | 1 °C = 1 °C |
| Fahrenheit | °F | 1 °F = -17.222222 °C |
| Kelvin | K | 1 K = -272.15 °C |
| Rankine | °R | 1 °R = -272.594444 °C |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Celsius in Kelvin?
- Convert 1 °C with the Celsius–Kelvin formula
- 1 Celsius = 274.15 Kelvin
How much is 5 Celsius in Kelvin?
- Convert 5 °C with the Celsius–Kelvin formula
- 5 Celsius = 278.15 Kelvin
How much is 25 Celsius in Kelvin?
- Convert 25 °C with the Celsius–Kelvin formula
- 25 Celsius = 298.15 Kelvin
Quick Conversion Reference Table
| Celsius (°C) | Kelvin (K) |
|---|---|
| 1 °C (Celsius) | 274.15 K (Kelvin) |
| 2 °C (Celsius) | 275.15 K (Kelvin) |
| 5 °C (Celsius) | 278.15 K (Kelvin) |
| 10 °C (Celsius) | 283.15 K (Kelvin) |
| 20 °C (Celsius) | 293.15 K (Kelvin) |
| 50 °C (Celsius) | 323.15 K (Kelvin) |
| 100 °C (Celsius) | 373.15 K (Kelvin) |
| 500 °C (Celsius) | 773.15 K (Kelvin) |
| 1000 °C (Celsius) | 1273.15 K (Kelvin) |
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How to Use This Converter
- Enter your value
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FAQ
How much is 1 Celsius in Kelvin?
1 Celsius = 274.15 Kelvin.
How do I convert Celsius to Kelvin?
Enter your value in Celsius into the converter above and the result in Kelvin appears instantly. For reference, 1 °C equals 274.15 K.
What is the formula for Celsius to Kelvin?
There is no single multiplier because this conversion uses an offset formula — see the formula card above. For example, 5 °C = 278.15 K.
Is this Celsius to Kelvin converter free and accurate?
Yes. This Celsius to Kelvin converter is 100% free, uses the exact international conversion factor (274.15), and works on any device with no signup.
How do I convert Kelvin back to Celsius?
Convert back with the inverse formula shown in the formula card above — or use our dedicated How Many Celsius in 1 Kelvin? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Temperature units are supported?
This converter supports 4 units: Celsius, Fahrenheit, Kelvin, Rankine.