Temperature Converter
A fast, private temperature converter. Pick your units, type a value, and the conversion appears instantly — in either direction. Everything runs on your device, so nothing you enter is ever uploaded.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to convert
- 1
Choose your units
The tool opens on the most common pairing. Change either unit from its dropdown, or hit the swap button to flip the direction.
- 2
Type a value
Enter a number in either box. The other side updates instantly as you type — convert either way without pressing a button.
- 3
Copy or compare
Copy the result to your clipboard, or scan the common-values table below for quick at-a-glance conversions.
Why use Temperature Converter?
100% private
Every conversion is computed locally in your browser. Nothing you enter ever leaves your device.
Instant & two-way
Results update live as you type, in either direction — no “convert” button and no page reloads.
Accurate
Conversions use exact, standards-based factors, so you get the same answer a trusted reference would.
Works on any device
No install and no account — it runs in any modern browser on desktop, tablet or phone.
Celsius, Fahrenheit and Kelvin
Temperature is the one everyday conversion that isn’t a simple multiply — the scales have different zero points. °F = °C × 9/5 + 32, and Kelvin is Celsius shifted by 273.15. This converter handles all three, live in both directions.
Anchors worth remembering
Water freezes at 0 °C / 32 °F and boils at 100 °C / 212 °F; body temperature is 37 °C / 98.6 °F; a comfortable room is 21 °C / 70 °F; and −40° is where the two scales meet. Weather math shortcut: double the Celsius and add 30 for a rough Fahrenheit.
Frequently asked questions
What units does the temperature converter support?
It covers the common temperature units (°C, °F, K and others). Choose any two from the dropdowns and convert between them instantly.
Does anything get uploaded to a server?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is uploaded, stored or logged, and it keeps working offline once the page has loaded.
Is it free?
Yes — completely free, with no account, no watermark and no limits on how much you convert.