TemperatureCelsius to Kelvin

Celsius to Kelvin

Snapshot

1 Celsius equals 274.15 Kelvin. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses a scale-and-offset equation (1 Celsius equals 274.15 Kelvin.).
Example: For 20 Celsius, the converted value equals 293.15 Kelvin.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

274.15 Kelvin (K)

Switch

Machine access

Available to apps and AI agents

Celsius to Kelvin can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The identifiers below select the same calculation as the calculator.

Machine-readable identifiers

Conversion family: temperature
Source unit: celsius
Target unit: kelvin

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "temperature",
  "value": 1,
  "from": "celsius",
  "to": "kelvin"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "temperature",
    "value": 1,
    "from": "celsius",
    "to": "kelvin",
    "result": {
      "raw": 274.15,
      "display": "274.15"
    },
    "canonicalPath": "/temperature/celsius-to-kelvin/"
  }
}

Full API documentation

Explanation

Use this page when you want a direct Celsius to Kelvin conversion. On this page, 1 Celsius equals 274.15 Kelvin.

The direct answer, calculator, common values table, and FAQ all follow the same exact equation for this route: 1 Celsius equals 274.15 Kelvin..

Celsius (deg C): a relative temperature scale widely used in weather, science, and everyday measurement.

Kelvin (K): the SI base unit of thermodynamic temperature, anchored to absolute zero and used in science and engineering.

This route is useful when translating everyday Celsius values into scientific kelvin notation without changing the underlying temperature interval size.

This conversion is not purely multiplicative in absolute terms: the degree size stays the same, but the zero reference shifts by 273.15.

Method & Reference

Method basis: exact affine formula (scale + offset) shown in Snapshot.
Equation reference: use the Snapshot formula shown for this route.
Consistency rule: forward and reverse pages use inverse equations to preserve scale reference points.

Common Conversion Values

Celsius (°C)	Kelvin (K)
-40	233.15
-20	253.15
0	273.15
20	293.15
32	305.15
37	310.15
50	323.15
100	373.15
212	485.15

Questions & answers

Frequently Asked Questions

What is 1 Celsius in Kelvin?

1 Celsius equals 274.15 Kelvin on this page.

What equation does this Celsius to Kelvin page use?

This page uses 1 Celsius equals 274.15 Kelvin., and the same equation drives the direct answer, calculator, table, and FAQ.

Is there a reverse page for Kelvin to Celsius?

Yes. The reverse direction has its own page at Kelvin to Celsius, where the inverse equation is used so the mirror route stays numerically aligned.