Convert Celsius to Fahrenheit
Convert Celsius to Fahrenheit instantly with the exact formula (°F = °C × 9/5 + 32), a quick table and the reverse conversion.
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How to use Celsius to Fahrenheit Converter
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Open Celsius to Fahrenheit Converter on this page. It loads right in your browser.
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Add your file, text or values and adjust the settings.
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About this tool
This converter turns Celsius into Fahrenheit as you type, using the exact formula °F = °C × 9/5 + 32. It is handy for weather forecasts, cooking and oven settings, body temperature and travel.
How to convert Celsius to Fahrenheit
Use the formula °F = °C × 9/5 + 32.
°F = °C × 9/5 + 32
Worked example
25 °C → 77 °F
Quick mental estimate
For a rough figure: double the Celsius value and add 30 (25 °C ≈ 80 °F). For the reverse, subtract 30 and halve.
Celsius to Fahrenheit table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -10 | 14 |
| 0 | 32 |
| 10 | 50 |
| 20 | 68 |
| 25 | 77 |
| 30 | 86 |
| 35 | 95 |
| 37 | 98.6 |
| 40 | 104 |
| 100 | 212 |
| 180 | 356 |
Quick reference
- -10 °C = 14 °F
- 10 °C = 50 °F
- 25 °C = 77 °F
- 35 °C = 95 °F
- 40 °C = 104 °F
- 180 °C = 356 °F
Where Celsius and Fahrenheit are used
Celsius is used for weather and cooking in most of the world, while the US uses Fahrenheit. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F); normal body temperature is about 37 °C (98.6 °F).
Tips
- Use the swap button to convert Fahrenheit back to Celsius.
- Choose 0 to 6 decimals; the full-precision value is used internally.
- The side panel also shows the value in every other unit of the same type.
Why use this converter
It is free, needs no sign-up and runs entirely in your browser, so it keeps working even offline once the page is loaded. Need the opposite? Use the Fahrenheit to Celsius converter or the full unit converter.
Features
- Instant Celsius to Fahrenheit conversion as you type
- Exact factor: °F = °C × 9/5 + 32
- Quick conversion table of common values
- Swap button for Fahrenheit to Celsius
- Choose 0 to 6 decimal places
- Works offline in your browser
Frequently asked questions
How do I convert Celsius to Fahrenheit?
Use the formula °F = °C × 9/5 + 32. 25 °C = 77 °F.
What is 100 °C in Fahrenheit?
100 °C equals 212 °F.
Is the conversion exact?
Yes. The tool uses the internationally defined conversion factor and only rounds the displayed result to the decimals you choose.