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Celsius to Kelvin Converter

Convert celsius to kelvin using the formula K = °C + 273.15. The calculator below shows higher precision results. The reference table is rounded for readability.

°C
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274.15 K
K = °C + 273.15
°C to K formula and worked examples

Formula and Step-by-Step

K = °C + 273.15

Step-by-step: 1 °C to K

  1. Start with 1°C
  2. Add 273.15: 1 + 273.15 = 274.15
  3. Result: 1°C = 274.15 K

Conversion Table

Common celsius to kelvin values. The table and calculator both use the same conversion formula shown above.

What Are Celsius and Kelvin?

What is a Celsius?

Celsius is a temperature scale where 0 degrees is the freezing point of water and 100 degrees is the boiling point. It is used by most countries worldwide.

What is a Kelvin?

Kelvin is the SI base unit of temperature. It starts at absolute zero (the coldest possible temperature) and uses the same degree size as Celsius. 0 K = -273.15 degrees C.

Why convert celsius to kelvin?

People typically convert celsius to kelvin when working on scientific calculations, solving thermodynamics problems, and completing physics coursework.

Frequently Asked Questions

1 celsius equals 274.15 kelvin. This uses the formula: K = °C + 273.15.
The formula is: K = °C + 273.15. See the °C to K formula page for step-by-step worked examples.
Use the kelvin to celsius converter. 1 K = -272.15 °C.
Most unit conversions use simple multiplication because the scales share a zero point. Temperature scales have different zero points (0 degrees C = 32 degrees F), so the formulas require both multiplication and addition or subtraction.
For Celsius to Fahrenheit, double the value and add 30. For Fahrenheit to Celsius, subtract 30 and halve. These give close approximations for everyday use.