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.
How to use
- Type the temperature.
- Pick the from and to scales.
- 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?
Why can't temperature use simple ratios?
Does it support Kelvin for science homework?
What is minus 40 in both scales?
Works offline?
Cooking conversions?
Rate this tool
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The complete temperature converter guide
Prefer the long version — a worked example, the mistakes people actually make, and answers to real questions? The blog guide Temperature Converter — Complete Guide, Mistakes & FAQ covers all of it step by step.
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