Recognised as Physical constant

Absolute zero

Absolute zero (0 K) is -273.15 °C. Exact by definition of the Celsius scale. Values follow CODATA 2018 (2019 SI redefinition).

Value

Value-273.15 °C

Scientific notation-2.7315 × 10^2 °C

Unit°C

Symbol0 K

ExactnessExact by definitionExact by definition of the Celsius scale.

Reciprocal-3.660992129 × 10^-3

× 2-5.463 × 10^2

× 10-2.7315 × 10^3

× 100-2.7315 × 10^4

× 1,000-2.7315 × 10^5

× 0.5-1.36575 × 10^2

× 0.1-2.7315 × 10^1

DatasetCODATA 2018 (2019 SI redefinition)

Categoryphysico chemical

Why it mattersExact by definition of the Celsius scale.

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