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  7. Convert celsius to kelvin

Convert celsius to kelvin

Convert Celsius (°C) to Kelvin (K) instantly.

Calculation

value + 273.15

Quick ConversionConverted
-40 °C233.15 K
0 °C273.15 K
25 °C298.15 K
100 °C373.15 K
300 °C573.15 K

Celsius

Celsius is a temperature scale where water freezes at 0 °C and boils at 100 °C under standard atmospheric pressure.

Celsius became the standard metric temperature scale for science, weather, medicine, and daily use in most countries.

Celsius is used in weather reports, medicine, cooking, laboratories, engineering specifications, and everyday metric temperature readings.

Kelvin

Kelvin is the SI base unit of thermodynamic temperature, starting at absolute zero.

The kelvin scale is named after Lord Kelvin and was developed to provide an absolute temperature scale for scientific work.

Kelvin is used in physics, chemistry, thermodynamics, astronomy, engineering, material science, gas laws, and heat-transfer calculations.

How to Convert Celsius to Kelvin

Mathematically, kelvin (K) = celsius (°C) converted with the formula below.

1 °C = 274.15 K

1 K = -272.15 °C

Formula: value + 273.15

Example: 25 °C = 298.15 K

  1. Start with the temperature value in degrees Celsius.
  2. Use the relationship that 0 °C equals 273.15 K.
  3. Add 273.15 to the Celsius value.
  4. Report the result in kelvin.

Precision note: Use Kelvin = Celsius + 273.15. Celsius and kelvin have the same temperature interval size, so only the zero point changes.

How many °C in K and K in °C

1 °C = 274.15 K

1 K = -272.15 °C

Celsius [°C]Kelvin [K]
-40 °C233.15 K
0 °C273.15 K
10 °C283.15 K
25 °C298.15 K
37 °C310.15 K
100 °C373.15 K

Common Use Cases for °C to K

  • Preparing Celsius temperatures for thermodynamics calculations.
  • Converting lab, chemistry, or physics data into kelvin.
  • Checking engineering formulas that require absolute temperature.
  • Working with gas laws, heat transfer, radiation, or material behavior.

FAQ

What is 0 degrees Celsius in kelvin?

0 °C equals 273.15 K.

What is 25 degrees Celsius in kelvin?

25 °C equals 298.15 K.

Does kelvin use the degree symbol?

No. The unit is written K, not °K.

More Celsius conversions

  • celsius to fahrenheit