Convert degrees Celsius to degrees Fahrenheit
Enter any value to calculate the result instantly.
degrees Celsius to degrees Fahrenheit formula
Multiply the Celsius value by 9/5, then add 32. Temperature scales require an offset because zero Celsius and zero Fahrenheit represent different physical temperatures.
Conversion table
Use these reference values for a quick comparison. The calculator above accepts positive, negative, decimal, and large values when they are meaningful for the quantity.
| degrees Celsius | degrees Fahrenheit |
|---|---|
| -40 C | -40 F |
| 0 C | 32 F |
| 10 C | 50 F |
| 20 C | 68 F |
| 37 C | 98.6 F |
| 100 C | 212 F |
How to use this converter
Enter the source measurement in the first field. CalUnit applies the displayed formula and updates the destination value immediately. You can use decimals and negative values, copy the result into your work, and compare it with the reference table. Keep the original unit beside the starting measurement so another reader can verify the calculation. For a different unit pair, open the complete temperature conversion guide or the multi-unit temperature converter.
When this conversion is useful
Celsius is used for weather in most countries, while Fahrenheit is common in the United States. For ovens, also check whether the appliance uses fan-assisted settings.
Accuracy and rounding
The formula is exact between the scales. Sensor and forecast uncertainty remains unchanged by conversion, so avoid adding unsupported precision.
Standards references
CalUnit checks physical unit relationships against authoritative measurement references. See the NIST Guide to the SI conversion factors and the BIPM SI Brochure. Regional cooking measures and digital storage conventions are identified separately because their names can represent more than one definition.