Celsius to Kelvin Converter

  • Enter a temperature in Celsius.
  • Select the unit (Celsius or Fahrenheit).
  • Click "Convert" to see the result in Kelvin or Fahrenheit.
  • View the detailed calculation and explanation.
  • Check the calculation history for previous conversions.
  • Clear entries and history when needed.
  • Copy the result to the clipboard.
Conversion History
Detailed Calculation and Explanation

What is Celsius and Kelvin?

Celsius (°C) and Kelvin (K) are two temperature scales used for measuring temperature in scientific and everyday contexts. They are closely related but differ in their reference points and intervals:

  1. Celsius (°C):
    • The Celsius scale, also known as the Centigrade scale, is a commonly used temperature scale in most parts of the world.
    • The Celsius scale is based on the freezing and boiling points of water at standard atmospheric pressure:
      • 0°C represents the freezing point of water.
      • 100°C represents the boiling point of water.
    • The Celsius scale is divided into 100 equal intervals between these two reference points.
    • It is used extensively in scientific research, weather reporting, and everyday temperature measurements in many countries.
    • Celsius is considered a metric temperature scale because it is based on the metric system.
  2. Kelvin (K):
    • The Kelvin scale is an absolute temperature scale that starts from absolute zero, the point at which there is no molecular motion.
    • The Kelvin scale uses the same size degree as the Celsius scale, making the temperature intervals identical. Thus, 1°C difference is equivalent to a 1 K difference.
    • Absolute zero on the Kelvin scale is defined as 0 K, which is approximately equal to -273.15°C.
    • The Kelvin scale is commonly used in scientific and engineering contexts, especially in fields such as thermodynamics, where absolute temperatures are essential.

All Formulae Related to Celsius and Kelvin

Here are the main formulas for converting temperatures between Celsius (°C) and Kelvin (K):

  1. Celsius to Kelvin: Kelvin (K) = Celsius (°C) + 273.15
  2. Kelvin to Celsius: Celsius (°C) = Kelvin (K) - 273.15

Applications of Celsius to Kelvin Calculator in Various Fields

A Celsius to Kelvin calculator, which allows for temperature conversions between the Celsius (°C) and Kelvin (K) temperature scales, has applications in various scientific, industrial, and educational fields. Here are some common applications of such a calculator:

  1. Scientific Research:
    • Scientists across different disciplines use Celsius to Kelvin calculators to convert temperature values when conducting experiments, recording data, or working with equations that involve temperature.
  2. Thermodynamics and Heat Transfer:
    • Engineers and physicists use temperature conversions when studying heat transfer, thermodynamic processes, and phase transitions. Kelvin is used in these contexts due to its absolute nature.
  3. Chemistry and Laboratory Work:
    • Researchers and chemists use temperature conversions when working with temperature-sensitive reactions, experiments, and materials. Accurate conversions are essential for precise measurements and chemical reactions.
  4. Physics and Astrophysics:
    • Astrophysicists and researchers in the field of physics use Kelvin for temperature measurements when studying celestial bodies and cosmic phenomena. Kelvin is preferred in astrophysical research due to its absolute nature.
  5. Astronomy:
    • Astronomers use Kelvin for temperature measurements when studying celestial objects and phenomena in space. Kelvin allows for consistent temperature values in astronomical research.

Benefits of Using the Celsius to Kelvin Calculator

Using a Celsius to Kelvin calculator offers several benefits in various scientific, engineering, and educational contexts. Here are the key advantages of using such a calculator:

  1. Accuracy: Celsius to Kelvin calculators provide precise and error-free temperature conversions, ensuring that temperature values are accurately translated between the two scales. This is particularly important in scientific research and engineering, where precision is crucial.
  2. Efficiency: Calculating temperature conversions manually can be time-consuming and prone to errors. Using a calculator streamlines the process and delivers results quickly, saving time and effort.
  3. Consistency: Calculators provide consistent and standardized conversions, reducing the risk of human errors that can occur when performing manual conversions repeatedly.
  4. Interdisciplinary Use: Celsius to Kelvin calculators are versatile tools that can be used in various fields, such as physics, chemistry, materials science, engineering, and environmental science. They facilitate communication and data exchange between different disciplines by ensuring temperature measurements are consistent.
  5. Scientific Research: Researchers and scientists can rely on calculators to convert temperature data acquired in one unit to another, allowing them to work with data from various sources or perform experiments involving temperature-sensitive variables.


  1. “Beyond the Familiar: Unveiling the Profound Significance of Kelvin in Thermodynamics” by American Journal of Physics
  2. “From Cosmic Microwave Background to Stellar Fusion: Unveiling the Role of Kelvin in Cosmology and Astrophysics” by Nature Astronomy

Last Updated : 27 February, 2024

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