Celsius to KelvinConverter
Instantly convert Celsius (°C) to Kelvin (K). Free, accurate, and easy to use.
What is a Celsius?
The Celsius scale is the world standard for expressing everyday temperature, with 0 °C defined as the freezing point of pure water and 100 °C as the boiling point at standard atmospheric pressure (101.325 kPa). Proposed by Swedish astronomer Anders Celsius in 1742, it is used for weather reporting, cooking, and medicine in virtually every country. Celsius degrees and Kelvin degrees are equal in size; the scales differ only in their zero point. A comfortable indoor temperature is typically 20–22 °C.
What is a Kelvin?
The Kelvin is the SI base unit of thermodynamic temperature, with its zero point at absolute zero — the coldest theoretically possible temperature, −273.15 °C or −459.67 °F. It was proposed by physicist William Thomson (Lord Kelvin) in 1848. Each Kelvin degree is the same size as a Celsius degree; to convert, add 273.15. The Kelvin scale is essential in physics, chemistry, and astronomy because it eliminates negative values. The surface temperature of the Sun is approximately 5,778 K.
Celsius to Kelvin Conversion Table
| Celsius (°C) | Kelvin (K) |
|---|---|
| 0.001 °C | 273.151 K |
| 0.01 °C | 273.16 K |
| 0.1 °C | 273.25 K |
| 0.5 °C | 273.65 K |
| 1 °C | 274.15 K |
| 2 °C | 275.15 K |
| 5 °C | 278.15 K |
| 10 °C | 283.15 K |
| 20 °C | 293.15 K |
| 50 °C | 323.15 K |
| 100 °C | 373.15 K |
| 200 °C | 473.15 K |
| 500 °C | 773.15 K |
| 1000 °C | 1273.15 K |
| 5000 °C | 5273.15 K |
| 10000 °C | 10273.15 K |
| 50000 °C | 50273.15 K |
| 100000 °C | 100273.15 K |
| 1000000 °C | 1000273.15 K |
| 1000000000 °C | 1.0000e+9 K |
Frequently Asked Questions
How do I convert Celsius to Kelvin?
Use the formula: K = °C + 273.15. For example, 100 °C converts to 373.15 K.
What is 0 °C in Kelvin?
0 °C equals 0 K.
What is room temperature in Kelvin?
Room temperature (about 20 °C / 68 °F) is approximately 293.15 K.
What is body temperature in Kelvin?
Normal human body temperature (37 °C / 98.6 °F) is 310.15 K.
What is the boiling point of water in Kelvin?
Water boils at 100 °C / 212 °F, which is 373.15 K.
At what Celsius value does water freeze?
Water freezes at 0 °C.