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Temperature Converter — Celsius, Fahrenheit, Kelvin & Rankine

Convert C ⇄ F ⇄ K ⇄ °R instantly with exact scientific formulas — weather, cooking, lab work.

Quick answer: Free temperature converter: C to F, F to C, Kelvin and Rankine — exact formulas, instant results, works offline.

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How to use

  1. Type the temperature.
  2. Pick the from and to scales.
  3. The converted value appears instantly.

About this tool

Temperature is offset math, not simple multiplication — this tool applies the exact formulas (°F = °C × 9/5 + 32, K = °C + 273.15) live as you type, with sensible rounding for weather and full precision for lab use.

FAQ

How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32 — the tool does it live: 20 °C = 68 °F, 37 °C = 98.6 °F.
Why can't temperature use simple ratios?
Because scales have different zero-points (offsets), unlike length or weight — the tool handles the offset math exactly.
Does it support Kelvin for science homework?
Yes — Kelvin and Rankine are included, with the exact 273.15 offset.
What is minus 40 in both scales?
−40 is the point where C and F meet — type it and see.
Works offline?
Yes — all math is local.
Cooking conversions?
Perfect for oven settings: 180 °C = 356 °F (often rounded to 350–355 in recipes).

Questions people ask about Temperature Converter

Collected from live search results on 31 Aug 2026 (search-engine "people also ask" boxes plus the questions published on ranking pages).

How to convert C to F easily?
The Toolfyra Temperature Converter runs entirely in your browser: open it, enter your input and the result appears instantly. No sign-up, no file upload, no watermark, and it works on phones as well as desktop.
What temperature is 20 C to F?
The Toolfyra Temperature Converter runs entirely in your browser: open it, enter your input and the result appears instantly. No sign-up, no file upload, no watermark, and it works on phones as well as desktop.
What is 1 C to 1 F?
The Toolfyra Temperature Converter runs entirely in your browser: open it, enter your input and the result appears instantly. No sign-up, no file upload, no watermark, and it works on phones as well as desktop.
How warm is 40 °C in Fahrenheit?
The Toolfyra Temperature Converter runs entirely in your browser: open it, enter your input and the result appears instantly. No sign-up, no file upload, no watermark, and it works on phones as well as desktop.
How to calculate temperature conversion?
The Toolfyra Temperature Converter runs entirely in your browser: open it, enter your input and the result appears instantly. No sign-up, no file upload, no watermark, and it works on phones as well as desktop.
How to convert F to C easily?
The Toolfyra Temperature Converter runs entirely in your browser: open it, enter your input and the result appears instantly. No sign-up, no file upload, no watermark, and it works on phones as well as desktop.

People also searched

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