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Temperature Converter

Celsius to Kelvin Converter

Convert Celsius (°C) to Kelvin (K) instantly with our interactive tool, benchmark tables, and detailed unit information.

C° = K°
Editable
°C
Input
Auto-Calculated
K
Result
Temperature conversion — instant results

Convert Celsius to Kelvin

Celsius (°C) Kelvin (K)
1 °C 274.15 K
5 °C 278.15 K
10 °C 283.15 K
25 °C 298.15 K
50 °C 323.15 K
100 °C 373.15 K
500 °C 773.15 K
1,000 °C 1273.15 K

Convert Kelvin to Celsius

Kelvin (K) Celsius (°C)
1 K -272.15 °C
5 K -268.15 °C
10 K -263.15 °C
25 K -248.15 °C
50 K -223.15 °C
100 K -173.15 °C
500 K 226.85 °C
1,000 K 726.85 °C

About Celsius and Kelvin

Detailed information about both units of measurement.

METRIC UNIT

Celsius

°C
Definition
The metric temperature scale where water freezes at 0° and boils at 100° at standard atmospheric pressure.
SI / Standard Information
SI-derived unit (°C). Named after Anders Celsius. The kelvin scale uses the same interval but starts at absolute zero.
Approximate Comparison
1°C is about 1.8°F. A comfortable room is around 21°C.
Practical Applications
  • Worldwide weather reporting
  • Medical thermometers
  • Cooking and baking
  • Scientific laboratory measurements
Real-World Examples
  • Room temperature is typically 20-22°C
  • Human body temperature is 37°C
  • Water freezes at 0°C and boils at 100°C
SCIENTIFIC UNIT

Kelvin

K
Definition
The SI base unit of thermodynamic temperature. Zero Kelvin is absolute zero, the coldest possible temperature.
SI / Standard Information
SI base unit (K). Named after Lord Kelvin. One kelvin increment equals 1°C increment. 0 K = -273.15°C = -459.67°F.
Approximate Comparison
A change of 1 K is exactly the same as a change of 1°C.
Practical Applications
  • Scientific research and physics
  • Astronomy and astrophysics
  • Cryogenics and superconductivity
  • Color temperature in photography
Real-World Examples
  • Room temperature is about 293-295 K
  • Surface temperature of the Sun is about 5,778 K
  • Absolute zero (0 K) has never been reached experimentally

About Converting Celsius to Kelvin

Our Celsius to Kelvin converter provides instant, accurate conversion between these two essential temperature units. Whether you are working in engineering, construction, education, or everyday temperature measurement, this tool delivers precise results with zero friction.

The Celsius (°C) is a metric unit of temperature. The metric temperature scale where water freezes at 0° and boils at 100° at standard atmospheric pressure. 1°C is about 1.8°F. A comfortable room is around 21°C.

The Kelvin (K) is a scientific unit of temperature. The SI base unit of thermodynamic temperature. Zero Kelvin is absolute zero, the coldest possible temperature. A change of 1 K is exactly the same as a change of 1°C.

Conversion Formula & Worked Examples

The conversion between °C and K uses the following mathematical relationship:

For Celsius to Kelvin: K = °C + 273.15

For Kelvin to Celsius: °C = K − 273.15

Whether you need to convert for worldwide weather reporting or scientific research and physics, our interactive converter provides instant, accurate results.

Example

1 °C

=

274.15 K

Example

5 °C

=

278.15 K

Example

10 °C

=

283.15 K

Reverse Direction

Need to convert Kelvin back into Celsius?

Switch conversion direction to view Kelvin → Celsius tables, benchmarks, and detailed info.

Open Kelvin → Celsius

Practical Use Cases & Applications

°C Celsius

  • Worldwide weather reporting
  • Medical thermometers
  • Cooking and baking
  • Scientific laboratory measurements

K Kelvin

  • Scientific research and physics
  • Astronomy and astrophysics
  • Cryogenics and superconductivity
  • Color temperature in photography

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert Celsius to Kelvin?
To convert Celsius (°C) to Kelvin (K), multiply the celsius value by the conversion factor. Our converter below handles this instantly — just enter the value in °C and the K result appears in real time.
How many Kelvin are in one celsius?
One celsius (°C) equals approximately — kelvin (K). This conversion factor is constant and can be used for any celsius value.
What is the formula to convert °C to K?
The conversion formula is: <strong>Kelvin = Celsius × the conversion factor</strong>. For example, 5 °C × — = — K, and 10 °C × — = — K.
Can I convert Kelvin back to Celsius?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/temperature/kelvin-to-celsius/" class="text-accent-teal underline">Kelvin to Celsius converter</a>. The reverse conversion factor is approximately 1 K = — °C.
Where is Celsius commonly used?
Worldwide weather reporting, Medical thermometers, Cooking and baking. The metric temperature scale where water freezes at 0° and boils at 100° at standard atmospheric pressure.
What is the difference between Celsius and Kelvin?
Celsius (°C) and Kelvin (K) are both units of temperature. Celsius belongs to the metric system, while Kelvin belongs to the scientific system. Understanding the conversion between them is essential for international work in temperature measurement.
What are some real-world examples of celsius and kelvin?
Celsius: Room temperature is typically 20-22°C; Human body temperature is 37°C Kelvin: Room temperature is about 293-295 K; Surface temperature of the Sun is about 5,778 K

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About This Conversion ℹ

This Celsius to Kelvin converter provides accurate, real-time conversions between these two temperature units.

Both units are among the most commonly used temperature measurements — rated 10/10 and 9/10 in popularity.

Bookmark this page for quick access to the Celsius → Kelvin converter whenever you need precise unit conversion.

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