---
title: "1 °C to K = 274.15 K"
description: "1 degree Celsius is 274.15 kelvin. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/1-celsius-to-kelvin/
site: "At One Place"
---

# 1 °C to K

**1 degree Celsius in kelvin: 1 °C = 274.15 K**

K = °C + 273.15

1 degree Celsius is 274.15 kelvin. To get there, use K = °C + 273.15.

## Values either side

*Degrees Celsius near 1, converted to kelvin.*

| Degrees Celsius | Kelvin |
| --- | --- |
| 0.5 °C | 273.65 |
| 1 °C ← | 274.15 |
| 1.5 °C | 274.65 |
| 2 °C | 275.15 |
| 2.5 °C | 275.65 |
| 3 °C | 276.15 |

## How the conversion works

The relationship is K = °C + 273.15. Both units measure temperature, so the conversion is a fixed formula that never changes. Temperature scales are the one common case where converting is not just multiplication — Celsius and Fahrenheit each put their zero in a different place, so an offset is applied as well as a scale factor.

## Common questions

### What is 1 °C in kelvin?

1 °C is 274.15 K.

### How do you convert degrees Celsius to kelvin?

Use K = °C + 273.15.

## Related pages

- [Degrees Celsius to kelvin](https://atoneplace.net/convert/celsius-to-kelvin/)
- [1 K to °C](https://atoneplace.net/convert/1-kelvin-to-celsius/)
- [0.5 °C to K](https://atoneplace.net/convert/0-5-celsius-to-kelvin/)
- [1.5 °C to K](https://atoneplace.net/convert/1-5-celsius-to-kelvin/)
- [2 °C to K](https://atoneplace.net/convert/2-celsius-to-kelvin/)
- [2.5 °C to K](https://atoneplace.net/convert/2-5-celsius-to-kelvin/)
- [3 °C to K](https://atoneplace.net/convert/3-celsius-to-kelvin/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)