How to use Temperature Converter
Convert an absolute temperature between Celsius, Fahrenheit, and Kelvin with validation against absolute zero.
- Enter the temperature and select its source scale.
- Choose the destination scale.
- Convert; if rejected, check the source unit and whether the value is physically below absolute zero.
Worked example
0°C = 32°F = 273.15 K. Fahrenheit = Celsius × 9/5 + 32; Kelvin = Celsius + 273.15.
Limits and things to check
These formulas convert temperatures, not temperature differences. A 10°C increase is an 18°F increase, rather than 50°F. Values below 0 K are rejected.
Why is Kelvin written without a degree symbol?
Kelvin is expressed as K. Celsius and Fahrenheit are conventionally written °C and °F.
Processing and privacy
Your browser performs the operation locally. Inputs and results are not sent to OneClickWorks.
Common questions
Does this tool upload my input?
No. Processing happens in this browser tab and your input is not sent to OneClickWorks.
What happens when I leave the page?
In-memory input and generated download links are released when the page is reset, replaced, or closed. OneClickWorks does not persist tool content.