Convert Celsius to Kelvin

Convert Celsius to Kelvin Online

Use this free online tool to convert temperatures from Celsius (°C) to Kelvin (K) and vice versa. It’s commonly used in science, physics, and temperature calculations worldwide.

Celsius to Kelvin Conversion Formula

To convert °C to K, add 273.15 to the Celsius temperature.

Examples:

0°C = 273.15 K
20°C = 293.15 K
-273.15°C = 0 K

Why Use This Celsius to Kelvin Converter?

• Instant, accurate conversions with real-time results
• Works both ways: Celsius to Kelvin and Kelvin to Celsius
• No downloads, accounts, or ads
• Optimized for desktop and mobile devices

When to Use Celsius vs Kelvin

Celsius (°C) is used in daily weather and general use.
Kelvin (K) is used in scientific and thermodynamic calculations.
0°C = 273.15 K — Freezing point of water
-273.15°C = 0 K — Absolute zero

Who Should Use This Converter?

• Scientists and lab researchers
• Physics and chemistry students
• Engineers and academics
• Anyone converting between metric temperature units