Temperature converter
These are absolute temperatures, not temperature differences. Values below absolute zero are rejected.
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert celsius to fahrenheit
Choose any of the 4 supported units. All conversions within this category share the same calculation engine.
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 °C, the result is approximately 50 °F. To go the other way, edit the result above or swap the units.
These are absolute temperatures, not temperature differences. Values below absolute zero are rejected.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 0 | 32 |
| 10 | 50 |
| 20 | 68 |
| 25 | 77 |
| 37 | 98.6 |
| 50 | 122 |
| 100 | 212 |