Convert Celsius (°C) to Kelvin (K) instantly. Enter any value and get the result immediately.
°C → K Converter
| Celsius (°C) | Kelvin (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 | 10,273.15 K |
Converting Celsius to Kelvin is the simplest temperature conversion — just add 273.15:
Examples:
Kelvin (K) is the base unit of temperature in the International System of Units (SI). Unlike Celsius and Fahrenheit, Kelvin is an absolute temperature scale — it starts at absolute zero (0 K), the coldest possible temperature in the universe where all molecular motion stops. Kelvin was named after British physicist Lord Kelvin (William Thomson) who proposed the scale in 1848.
Notice that Kelvin does not use the degree symbol (°) — it is simply written as "K", not "°K". This is because Kelvin is not a relative scale like Celsius or Fahrenheit, but an absolute measurement.
Celsius (°C) is the most widely used temperature scale in the world, part of the metric system. It was developed by Swedish astronomer Anders Celsius in 1742. The scale is based on water — 0°C is the freezing point and 100°C is the boiling point at standard atmospheric pressure.
| Celsius (°C) | Kelvin (K) | Reference Point |
|---|---|---|
| -273.15 °C | 0 K | Absolute zero |
| -196 °C | 77.15 K | Liquid nitrogen temperature |
| -89.2 °C | 183.95 K | Coldest recorded on Earth |
| 0 °C | 273.15 K | Freezing point of water |
| 20 °C | 293.15 K | Room temperature |
| 37 °C | 310.15 K | Human body temperature |
| 100 °C | 373.15 K | Boiling point of water |
| 1000 °C | 1273.15 K | Lava / molten rock |
| 5526 °C | 5799 K | Surface of the Sun |
Simply add 273.15 to the Celsius value: K = °C + 273.15. For example, 25°C = 25 + 273.15 = 298.15 K.
0°C = 273.15 K. This is the freezing point of water expressed in Kelvin.
100°C = 373.15 K. This is the boiling point of water at sea level.
Absolute zero is 0 K = -273.15°C. This is the theoretically coldest possible temperature — all molecular motion stops at this point.
Kelvin is an absolute thermodynamic scale, not a relative scale. Therefore it is written as K, not °K. This was officially decided by the International Bureau of Weights and Measures.
37°C = 310.15 K. This is the normal human body temperature in Kelvin, commonly used in medical and biological sciences.