How do I convert Kelvin (K) to Celsius (°C)?

1 kelvin equals -272.15 celsius using SI-based conversion and precise factors.

What is the formula to convert Kelvin (K) to Celsius (°C)?

Temperature conversions include an offset (e.g., +273.15 for K, or +/−32 with ratio 5/9 and 9/5).

Yes, it follows an exact affine transformation between scales (ratio + offset).

Use the shareable URL pattern: /convert/kelvin-to-celsius/1

Category: Temperature

Value From To Precision

-272.15 celsius

1 kelvin = -272.15 celsius

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Temperature and applying exact factors where applicable.

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Temperature scales combine ratios and offsets; Kelvin is absolute.

Kelvin (K)

Absolute thermodynamic scale; SI base unit.

History: Defined via Boltzmann constant since 2019.

Celsius (°C)

Offset scale with 0 °C at water’s freezing point.

History: Named after Anders Celsius; redefined via absolute scales.