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📏 Temperature Converter — °C ⇄ °F ⇄ K

Convert between Celsius, Fahrenheit and Kelvin using the exact official formulas. Free, fast and private — runs entirely in your browser with no uploads or sign-up.

Unit Converter Free · no sign-up Added 2026-08-04
Input
Result

Private by design. This tool runs entirely in your browser — nothing you enter or add is uploaded to any server.

How it works

  1. Enter the value you want to convert.
  2. Pick the unit you are converting from and the unit you want.
  3. The result updates instantly as you type, together with the exact conversion factor.
  4. Temperature conversions use the standard Celsius/Fahrenheit/Kelvin formulas.
  5. Everything happens in your browser — no data is sent to any server.

Examples

  • 25 Celsius (°C) = 77 Fahrenheit (°F).
  • Quick reference: 1 °C = 33.8 °F.
  • Type a new value or swap the dropdowns — the result recalculates instantly.

Frequently asked questions

How do I convert °C to °F?

Enter your value, select Celsius (°C) in the “From” box and Fahrenheit (°F) in the “To” box. For reference, 1 °C = 33.8 °F.

Is my text or data uploaded to a server?

No. The Temperature Converter runs entirely in your browser using JavaScript — nothing you type or paste is sent anywhere, and everything disappears when you close the tab.

Is this tool free to use?

Yes, completely free with no sign-up, no watermarks and no usage limits. Temperature Converter is part of a collection of free tools where new tools are added after review.

Does it work on phones and tablets?

Yes. The layout is fully responsive and all processing is done on your device, so it works on any modern phone, tablet or computer — even offline once the page has loaded.

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