UnitSnapCelsius to Fahrenheit
1 °C = 33.8 °F
Converting Celsius to Fahrenheit is what travelers to the United States, cooks following American recipes, and anyone reading a US weather report need to do. Most of the world uses Celsius, so the usual task is turning a familiar Celsius reading into the Fahrenheit number an American oven, thermostat, or forecast expects.
When you need to convert degrees Celsius to degrees Fahrenheit
- Setting an American oven when a European or Asian recipe gives Celsius
- Explaining your local weather to friends or colleagues in the United States
- Reading a fever thermometer reading against US medical advice
- Adjusting a US-made thermostat or air conditioner
How to convert degrees Celsius to degrees Fahrenheit
°F = °C × 1.8 + 32
Example: 25 °C = 77 °F
Common temperatures
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -20 °C | -4 °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 |
| 100 °C | 212 °F |
| 180 °C | 356 °F |
Tips for converting degrees Celsius to degrees Fahrenheit
- Exact formula: multiply by 1.8 (or 9/5) and add 32. Do the multiplication first, then add 32, or the result will be wrong.
- For weather, "double it and add 30" gets within about 2 °F between 0 and 20 °C, but drifts several degrees off in hot weather and frost.
- Each 5 °C step equals exactly 9 °F, so once you know one reference point you can count up or down in steps.
Celsius to Fahrenheit conversion table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 °C | -40 °F |
| -20 °C | -4 °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 |
| 50 °C | 122 °F |
| 60 °C | 140 °F |
| 70 °C | 158 °F |
| 80 °C | 176 °F |
| 90 °C | 194 °F |
| 100 °C | 212 °F |
| 150 °C | 302 °F |
| 200 °C | 392 °F |
| 300 °C | 572 °F |
About the units
Celsius: The degree Celsius is the temperature scale used in most of the world. Water freezes at 0 °C and boils at 100 °C at sea level.
Fahrenheit: The degree Fahrenheit is the temperature scale used in the United States. Water freezes at 32 °F and boils at 212 °F at sea level.
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Frequently asked questions
What is 1 degree Celsius in degrees Fahrenheit?
1 degree Celsius equals 33.8 degrees Fahrenheit.
What is 1 degree Fahrenheit in degrees Celsius?
1 degree Fahrenheit equals -17.22222 degrees Celsius.
How do I convert degrees Celsius to degrees Fahrenheit?
Use the formula °F = °C × 1.8 + 32.
What is 10 degrees Celsius in degrees Fahrenheit?
10 degrees Celsius equals 50 degrees Fahrenheit.
Related conversions
Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated