-273.15 Celsius to kelvin
0.00 K
-273.15 °C = 0.00 K.
kelvin
0.00K
-273.15 °C = 0.00 K
In short
How many kelvin is -273.15 Celsius?
-273.15 °C = 0.00 K. 1 Celsius = 1.000000 kelvin, then + 273.15, so the working is -273.15 × 1.000000 + 273.1500 = 0.00.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 Celsius = 1.000000 kelvin, then + 273.15 -273.15 × 1.000000 + 273.1500 = 0.00
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (K) | Off by |
|---|---|---|
| Whole number | 0 | exact |
| 1 decimal | 0.0 | exact |
| 2 decimals | 0.00 | exact |
Round trip: take 0.00 K back the other way and you land on -273.1500 °C — a drift of 0.0000 °C. That gap is the rounding, not the conversion.
What -273.15 °C looks like
-273.15 °C
Absolute zero. Nothing on the ordinary temperature scale goes below this, which is the whole reason the Kelvin scale starts here instead.
Frequently asked questions
What is -273.15 Celsius in kelvin?
-273.15 Celsius is 0.00 kelvin. 1 Celsius = 1.000000 kelvin, then + 273.15, so the working is -273.15 × 1.000000 + 273.1500 = 0.00.
How accurate is 0.00 K?
Rounding to 0.00 K and converting straight back gives -273.1500 °C, a drift of 0.0000 °C from the -273.15 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Celsius to Kelvin Converter
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