Celsius to Kelvin Conversion - Accurate °C ⇄ K Conversion Tool

Convert between Celsius (°C) and Kelvin (K) with precision using standard temperature measurements

Celsius to Kelvin Converter Tool
Enter a value to convert between Celsius and Kelvin with bidirectional conversion (K = °C + 273.15)
Note: This converter uses standard conversion (K = °C + 273.15). Perfect for scientific calculations, thermodynamics, and absolute temperature measurements. Absolute zero is 0 K = -273.15°C.

Temperature is a fundamental measurement in science, physics, chemistry, and daily life. Two of the most common temperature scales are Celsius (°C) and Kelvin (K). While Celsius is widely used in everyday life, Kelvin is the standard unit in scientific and thermodynamic calculations. Understanding celsius to kelvin conversion or the reverse (kelvin to celsius) is important for both academics and practical applications.Our celsius ⇄ kelvin converter gives you instant and accurate results.

Why Use This Celsius ⇄ Kelvin Converter?

  • Accurate calculation: Based on exact scientific formulas.
  • Instant results: Provides quick conversions in real-time.
  • Two-way conversion: Works for both celsius to kelvin and kelvin to celsius.
  • Clear results: Displays both exact and rounded values.
  • Science-focused: Useful for students, researchers, and engineers.

How to Use the Converter

  1. Enter the value in Celsius or Kelvin.
  2. Select the conversion direction.
  3. Get instant results.
  4. Use the result in labs, classrooms, or projects.

What is Celsius (°C)?

The Celsius scale is a metric system unit for temperature. It is based on the freezing and boiling points of water.

Key Facts About Celsius

  • 0 °C = Freezing point of water.
  • 100 °C = Boiling point of water (at 1 atm).
  • Abbreviation: °C.
  • Used in: Weather forecasts, cooking, and daily measurements.

What is Kelvin (K)?

The Kelvin scale is the SI base unit for temperature, primarily used in science. It starts from absolute zero, the theoretical lowest possible temperature.

Key Facts About Kelvin

  • 0 K = Absolute zero = -273.15 °C.
  • No negative values exist in Kelvin.
  • Abbreviation: K.
  • Used in: Physics, chemistry, thermodynamics, and space science.

Celsius to Kelvin Conversion Formula

Formula:

K = °C + 273.15

Celsius to Kelvin Conversion Example

  • 0 °C to K
    Step 1: Formula = K = °C + 273.15
    Step 2: Substitute = 0 + 273.15
    Step 3: Result = 273.15 K
     
  • 25 °C to K
    Step 1: K = °C + 273.15
    Step 2: Substitute = 25 + 273.15
    Step 3: Result = 298.15 K
     
  • 100 °C to K
    Step 1: K = °C + 273.15
    Step 2: Substitute = 100 + 273.15
    Step 3: Result = 373.15 K

Kelvin to Celsius Conversion Formula

Formula:

°C = K - 273.15

Kelvin to Celsius Conversion Example

  • 273.15 K to °C
    Step 1: Formula = °C = K - 273.15
    Step 2: Substitute = 273.15 - 273.15
    Step 3: Result = 0 °C
     
  • 300 K to °C
    Step 1: °C = K - 273.15
    Step 2: Substitute = 300 - 273.15
    Step 3: Result = 26.85 °C
     
  • 373.15 K to °C
    Step 1: °C = K - 273.15
    Step 2: Substitute = 373.15 - 273.15
    Step 3: Result = 100 °C

Applications of Celsius and Kelvin Conversion

  • Physics & Thermodynamics: Kelvin is required for scientific formulas such as the laws of thermodynamics.
  • Chemistry: Reaction rates and energy calculations often use Kelvin.
  • Space Research: Scientists use Kelvin to describe cosmic temperatures.
  • Education: Students learn celsius ⇄ kelvin conversions in physics and chemistry.
  • Daily Science: Weather studies, refrigeration, and engineering require accurate conversions.

Quick Reference Table for Celsius ⇄ Kelvin

Celsius (°C)

Kelvin (K)

Kelvin (K)

Celsius (°C)

0 °C

273.15 K

273.15 K

0 °C

25 °C

298.15 K

300 K

26.85 °C

50 °C

323.15 K

350 K

76.85 °C

100 °C

373.15 K

400 K

126.85 °C

Use our celsius ⇄ kelvin converter at Digital Calculator for fast, reliable, and precise results. Perfect for students, researchers, and professionals working in science and engineering.

Our Popular Temperature Converter:

Fahrenheit To Celsius Conversion

Celsius To Fahrenheit Conversion

Frequently Asked Questions

Published: 10/1/2025