Temperature Converter
Type in any field — Celsius, Fahrenheit, Kelvin or Rankine all update instantly.
°C · °F · K · °R
Water freezes at 0°C, boils at 100°C
Water freezes at 32°F, boils at 212°F
0 K is absolute zero — no negative values
Fahrenheit-scaled absolute temperature
Common Reference Points (click a row to load it)
| Reference | °C | °F | K |
|---|
Temperature Converter – Celsius, Fahrenheit, Kelvin & Rankine
Free online temperature converter. Instantly convert between Celsius, Fahrenheit, Kelvin and Rankine, with a quick-click reference table for common temperatures.
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Features of Temperature Converter
- Four scales, one tool — Celsius, Fahrenheit, Kelvin, and Rankine all convert at once, so you never need to hunt for a second converter for a less common scale
- Live, bidirectional conversion — type into any field and the other three update instantly; there’s no separate “convert” button to click
- Physically accurate limits — Kelvin and Rankine are prevented from going negative, since temperatures below absolute zero aren’t physically possible
- Click-to-load reference table — common temperatures (freezing and boiling water, body temperature, room temperature, oven baking heat, and the sun’s surface) are one click away, shown in all three main scales at once
- No sign-up, no limits, no ads interrupting the tool — just type and read the result
- 100% private — all conversion happens locally in your browser; nothing you enter is sent anywhere
How to Use the Temperature Converter?
- Type a value into any field. Enter a number into Celsius, Fahrenheit, Kelvin, or Rankine — it doesn’t matter which one you start with.
- Read the converted values instantly. The other three fields update automatically as you type, with no button to press.
- Use the reference table for common temperatures. Click any row — like “Water boils” or “Normal human body temperature” — to instantly load that value into all four fields.
- Reset anytime. Click “Reset to 25°C” to return to a clean starting point.
Tip: If you’re converting a recipe, oven temperature, or weather reading between Celsius and Fahrenheit, the reference table’s “Oven — moderate bake” and water freezing/boiling rows are a fast way to sanity-check that your converted number looks right before you rely on it.