---
title: "Degrees Celsius to Kelvin — °C to K converter"
description: "1 degree Celsius = 274.15 kelvin. Convert degrees Celsius to kelvin with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/celsius-to-kelvin/
site: "At One Place"
---

# Degrees Celsius to kelvin

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

K = °C + 273.15

To convert degrees Celsius to kelvin, use K = °C + 273.15. The table below gives the values people look up most often, and the converter works for any number.

## Degrees Celsius to kelvin table

*Common degree Celsius values converted to kelvin.*

| Degrees Celsius | Kelvin |
| --- | --- |
| -40 °C | 233.15 |
| -20 °C | 253.15 |
| -10 °C | 263.15 |
| 0 °C | 273.15 |
| 10 °C | 283.15 |
| 20 °C | 293.15 |
| 25 °C | 298.15 |
| 30 °C | 303.15 |
| 37 °C | 310.15 |
| 50 °C | 323.15 |
| 75 °C | 348.15 |
| 100 °C | 373.15 |
| 150 °C | 423.15 |
| 200 °C | 473.15 |

## 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

### How many kelvin are in one degree Celsius?

One degree Celsius equals 274.15 kelvin. K = °C + 273.15.

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

Use K = °C + 273.15. So 10 °C is 283.15 K.

### How many degrees Celsius are in one kelvin?

One kelvin equals -272.15 degrees Celsius, which is the reverse of the conversion above.

## Related pages

- [Kelvin to Degrees Celsius](https://atoneplace.net/convert/kelvin-to-celsius/)
- [Degrees Celsius to Degrees Fahrenheit](https://atoneplace.net/convert/celsius-to-fahrenheit/)

## 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/)