Kelvin
Based upon the definitions of the Centigrade scale and the experimental evidence that absolute zero is -273.15ºC
Kelvin to Celsius (K to °C)
Format
Accuracy
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Kelvin to Celsius formula
°C =
K - 273.15
Kelvin to Celsius formula
°C =
K - 273.15
Celsius
Although initially defined by the freezing point of water (and later the melting point of ice), the Celsius scale is now officially a derived scale, defined in relation to the Kelvin temperature scale.
Zero on the Celsius scale (0°C) is now defined as the equivalent to 273.15K, with a temperature difference of 1 deg C equivalent to a difference of 1K, meaning the unit size in each scale is the same. This means that 100°C, previously defined as the boiling point of water, is now defined as the equivalent to 373.15K.
The Celsius scale is an interval system but not a ratio system, meaning it follows a relative scale but not an absolute scale. This can be seen because the temperature interval between 20°C and 30°C is the same as between 30°C and 40°C, but 40°C does not have twice the air heat energy of 20°C.
A temperature difference of 1 deg C is the equivalent of a temperature difference 1.8°F.
Kelvin to Celsius table
| Kelvin | Celsius |
|---|---|
| 0K | -273.15°C |
| 1K | -272.15°C |
| 2K | -271.15°C |
| 3K | -270.15°C |
| 4K | -269.15°C |
| 5K | -268.15°C |
| 6K | -267.15°C |
| 7K | -266.15°C |
| 8K | -265.15°C |
| 9K | -264.15°C |
| 10K | -263.15°C |
| 11K | -262.15°C |
| 12K | -261.15°C |
| 13K | -260.15°C |
| 14K | -259.15°C |
| 15K | -258.15°C |
| 16K | -257.15°C |
| 17K | -256.15°C |
| 18K | -255.15°C |
| 19K | -254.15°C |