🌡️ Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin using the exact defining formulas (°F = °C × 9/5 + 32; K = °C + 273.15). Temperature scales use offsets, not simple multiplication, so a dedicated converter avoids the most common conversion mistakes.
1 °C = 33.8 °F
1 degrees Celsius = 33.8 degrees Fahrenheit
1 × 1.8 + 32 = 33.8
These scales have different zero points, so the conversion multiplies by 1.8 and then shifts by +32.
Popular temperature conversions
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All temperature units
| Unit | Symbol | Definition |
|---|---|---|
| Celsius | °C | Degrees Celsius (°C) set 0° at the freezing point of water and 100° at its boiling point (at standard pressure). It is the everyday temperature scale in almost every country. |
| Fahrenheit | °F | Degrees Fahrenheit (°F) place water’s freezing point at 32° and boiling point at 212°. It is the everyday temperature scale in the United States. |
| Kelvin | K | The kelvin (K) is the SI base unit of temperature, starting at absolute zero (0 K = −273.15 °C). A change of 1 K equals a change of 1 °C; kelvins are standard in science and engineering. |
| Rankine | °R | Degrees Rankine (°R) form an absolute scale using Fahrenheit-sized degrees: 0 °R is absolute zero. It appears mainly in US thermodynamics engineering. |
Frequently asked questions
How do I convert temperature units?
Choose your two units in the converter above and type a value, the result updates instantly, entirely in your browser. All 4 temperature units on this page are interchangeable, so you can convert in either direction.
Which temperature units can I convert here?
This converter supports 4 temperature units: Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R). Pick any two to convert between them.
What is the most common temperature conversion?
One of the most-used temperature conversions is Celsius to Fahrenheit (°C → °F). Every temperature pair we support is linked below, each with its own formula and table.
Is this Temperature Converter free and private?
Yes. It is free with no sign-up, uses the exact internationally defined conversion factors, and computes every result locally in your browser, nothing you type is uploaded, and the page keeps working offline.