Temperature Converter

Convert temperatures between Celsius, Fahrenheit, and Kelvin without sending the value anywhere.

ValueFromTo

Converted resultEnter a value aboveThe calculation runs locally as you type.

Private by default

This tool processes your input in the current browser tab and does not upload it for processing.

How to convert temperature

Enter a value and choose Celsius, Fahrenheit, or Kelvin as the source and target units. The result updates immediately.

The tool rejects temperatures below absolute zero but otherwise supports finite decimal and scientific-notation input.

No temperature values are sent to analytics or a server. Display rounding does not change the internal result.

Questions

Does the calculator allow values below absolute zero?

No. Inputs representing a temperature below −273.15 °C are rejected.

Why is temperature not converted with one multiplier?

Celsius, Fahrenheit, and Kelvin use different zero points, so conversion requires both scaling and an offset.

Is calculation local?

Yes. The entered value is processed only in the browser.

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