Celsius to Kelvin Converter

Exact conversion

Celsius to kelvin formula

k = (c × 1) + 273.15

1 c equals 274.15 k. 10 c equals 283.15 k.

About these units

c
Degrees Celsius.
k
Kelvin, an absolute temperature scale.

Before you use the result

c to k context and checks

Best use
Use temperature conversions for weather, cooking, lab notes, HVAC, and equipment settings.
Common mistake
Temperature scales use offsets, so Celsius to Fahrenheit is not only multiplication. Temperature differences use different handling.
Precision note
Avoid rounding before applying an offset formula because the zero point and interval size both affect the result.

Example check: -40 c converts to 233.15 k. Use this known value to sanity-check a spreadsheet, homework solution, spec sheet, or manual calculation.

Common c to k conversion table

ck
-40 c233.15 k
0 c273.15 k
20 c293.15 k
100 c373.15 k

Temperature guide

How to use the Celsius to Kelvin Converter

Convert celsius (c) to kelvin (k) with the exact temperature formula, worked examples, and a common-values table. Use the instant result for the celsius to kelvin conversion, then check the common-value table, reverse link, and unit notes before copying the answer.

  1. 1

    Enter Celsius

    Type the celsius value you want to convert. Decimal values work when you need a partial unit.

  2. 2

    Read Kelvin

    Use the main result for the exact kelvin value, then scan the common-value table for nearby reference points.

  3. 3

    Confirm Celsius to Kelvin

    Confirm the celsius to kelvin unit symbols before using the number in a report, product listing, invoice, or assignment.