Celsius to Fahrenheit Converter
°F = °C × 9/5 + 32
1 degree Celsius equals 33.8 degrees Fahrenheit
How to convert Celsius to Fahrenheit
These formulas convert temperature readings. For a temperature difference, use only the scale factor: do not add or subtract the zero-point offset.
°F = °C × 9/5 + 32Multiplying by 9/5 converts the size of a degree, and the addition of 32 lines up the two zero points, which sit at different temperatures.
68 °F = 20 × 9/5 + 32Celsius to Fahrenheit conversion table
Common values in degrees Celsius, converted to degrees Fahrenheit.
| Degrees Celsius (°C) | Degrees Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -20 | -4 |
| -10 | 14 |
| 0 | 32 |
| 10 | 50 |
| 20 | 68 |
| 25 | 77 |
| 30 | 86 |
| 37 | 98.6 |
| 50 | 122 |
| 100 | 212 |
Frequently asked questions
Is a change of 1 °C the same as a change of 1 °F?
No. A change of 1 °C is a change of 1.8 °F. Apply only the scale factor to a temperature difference; the offset applies to temperature readings.
About these units
degree Celsius°C
Water freezes at 0 °C and boils at 100 °C at standard atmospheric pressure. The everyday scale in most of the world.
degree Fahrenheit°F
Water freezes at 32 °F and boils at 212 °F at standard atmospheric pressure. The everyday scale in the United States.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.