Temperature Converter
Convert any temperature between Celsius, Fahrenheit, Kelvin and Rankine — all four scales shown simultaneously as you type.
Common reference points: Water freezes at 0°C / 32°F / 273.15K | Water boils at 100°C / 212°F / 373.15K | Absolute zero = 0K / −273.15°C
What Does This Tool Do?
Convert temperatures between all four common scales — Celsius, Fahrenheit, Kelvin and Rankine. All values are shown at once and update in real time. Includes common reference points.
Key Features
4 Scales
°C, °F, K and °R simultaneously.
Live Updates
Converts as you type.
Reference Points
Freezing, boiling and absolute zero shown.
Click to Copy
Click any value to copy it.
How to Use
- Enter the temperature value.
- Select the scale you are converting from.
- All four scales update instantly.
Frequently Asked Questions
What is the formula for Celsius to Fahrenheit?▾
°F = °C × 9/5 + 32. Reverse: °C = (°F − 32) × 5/9.
What is Kelvin?▾
Kelvin is the SI base unit of temperature. 0K is absolute zero (the coldest possible temperature). K = °C + 273.15 — there are no negative Kelvin values.
What is Rankine?▾
Rankine (°R) is used in some US engineering fields. Like Kelvin it starts at absolute zero, but uses Fahrenheit-sized degrees. °R = °F + 459.67.
Complete Guide to Temperature Converter
When To Use This Tool
Use Temperature Converter whenever you need fast, accurate output without installing software. This tool is designed for speed, clarity, and repeatable results for day-to-day work.
Best Practices for Accurate Results
- Double-check the format of your input before running the tool.
- Test with a small sample first, then process larger data.
- Use Related Tools to verify, convert, or transform the output.
Why Users Prefer AdeDX
AdeDX tools are browser-based, free to use, and built to work across desktop and mobile devices. Most processing happens directly in your browser for fast performance and improved privacy.