K → °C

Kelvin to Degrees Celsius

Convert kelvin to degrees Celsius with an exact, deterministic calculation.

LIVE CONVERSIONDECIMAL ENGINE EXACT_

FROM · KTO · °C-272.15

1 K = -272.15 °C

FORMATPRECISION

FORMULA

How to convert

Convert K to the base scale, then apply the °C scale and offset.

Example: 10 K = -263.15 °C.

QUICK ANSWER

1 Kelvin

-272.15 °C

REFERENCE TABLE

Kelvin to Celsius

kelvin	degrees Celsius
1 K	-272.15 °C
5 K	-268.15 °C
10 K	-263.15 °C
25 K	-248.15 °C
50 K	-223.15 °C
100 K	-173.15 °C

EDITORIALLY REVIEWEDAkhil Saroop · 16 August 2026

ABOUT THIS CONVERSION

Convert kelvin to degrees Celsius

Kelvin and Celsius increments are the same size, but their zero points differ. Subtract exactly 273.15 from kelvin to obtain degrees Celsius; kelvin values are written without a degree symbol.

Real-world example

A temperature of 20 K is -253.15 °C, an extremely cold value close to absolute zero. This example is scientific rather than a typical weather temperature.

Rounding and precision

Weather and room temperatures usually need no more than one decimal place. Laboratory work should follow instrument uncertainty. Preserve the offset calculation before rounding; rounding the intermediate Celsius or kelvin value can shift the final answer.

Regional context

Most countries report everyday temperature in Celsius, while the United States commonly uses Fahrenheit. Scientific standards use kelvin without the degree sign. Recipe temperatures must be checked for both scale and oven behavior.

Common mistake

Do not write °K and do not treat kelvin as a ratio to Celsius. The correct symbol is K, and conversion requires the 273.15 offset.

Editorial method

Definitions and sources are listed below. Calculations retain more precision than the default display and round only for presentation.

USEFUL ANSWERS

K to °C FAQs

Can kelvin be negative?

Ordinary thermodynamic temperature cannot be below absolute zero, 0 K.

Why are kelvin and Celsius degree changes equal?

Both scales use the same interval size; only their zero points differ by 273.15.

How do I convert kelvin to degrees Celsius?

Enter the K value in the calculator. It applies the scale offsets shown in the formula and returns the equivalent in °C; the formula and common-value table are shown on this page.

Is the K to °C conversion exact?

Defined measurement relationships are calculated with decimal arithmetic from stored standards. The displayed answer may be rounded for readability. Currency results instead depend on the dated reference rate shown.

FROM UNIT

Kelvin

The Kelvin scale (K) is converted to Kelvin (K) with base = value × 1 + 0. Its stored scale and offset express readings as kelvin before conversion.

BIPM SI Brochure and exact international definitions ↗Definition verified 14 August 2026

TO UNIT

Celsius

Degrees Celsius use the same interval as kelvin, with 0 °C equal to 273.15 K. Its stored scale and offset express readings as kelvin before conversion.