Celsius to Fahrenheit Converter
Type a value in celsius to get it in fahrenheit, and see the reverse conversion.
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Celsius to Fahrenheit Converter by TheCalcTools
How the Celsius to Fahrenheit Converter works
Fahrenheit and Celsius have different zero points and degree sizes: water freezes at 0 °C = 32 °F and boils at 100 °C = 212 °F. Multiply by 9/5 (1.8) and add 32.
To convert celsius to fahrenheit, multiply by 9/5 (1.8) and add 32. The calculator shows the result to 6 significant figures; the conversion factor itself is exact by definition.
Quick estimate in your head: double it and add 30 (20 °C → 70 °F; exact answer 68 °F).
The formula
Worked example
Using the default values shown in the calculator:
| Value in celsius (°C) | 25 |
|---|
- 25 °C × 1.8 + 32 = 77 °F.
Result:
| Fahrenheit (°F) | 77 |
|---|---|
| 1 °C in °F | 33.8 |
| Your number read as °F, in °C | -3.88889 |
Conversion table
| °C | °F |
|---|---|
| -40 °C | -40 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 40 °C | 104 °F |
| 100 °C | 212 °F |
| 180 °C | 356 °F |
Frequently asked questions
What is 1 degree Celsius in fahrenheit?
1 degree Celsius (°C) equals 33.8 °F.
What is normal body temperature in Fahrenheit?
About 37 °C, which is 98.6 °F.
At what temperature are Celsius and Fahrenheit equal?
−40 degrees.
Sources and further reading
- Wikipedia: Fahrenheit
- Wikipedia: Celsius
- NIST: Guide for the Use of the International System of Units (SI)
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.