Convert Celsius to Fahrenheit
1 °C = 33.8 °F. Type any value below for an instant conversion.
°F
-40 °C = -40 °F
Formula
°F = (°C × 9/5) + 32Worked example: 25 °C × 9/5 = 45, then 45 + 32 = 77 °F
The scales cross at −40°, which is the same temperature in both. For a rough mental conversion, double the Celsius figure and add 30 — 20 °C gives about 70 °F against an exact 68 °F. Body temperature is 37 °C or 98.6 °F.
Celsius to Fahrenheit conversion table
| Celsius (°C) | Fahrenheit (°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 |
Frequently asked questions
How many Fahrenheit are in one Celsiu?
One Celsiu equals 33.8 Fahrenheit.
How do I convert Celsius to Fahrenheit?
Use the formula °F = (°C × 9/5) + 32. For example, 25 °C × 9/5 = 45, then 45 + 32 = 77 °F.
Is this °C to °F conversion exact?
Yes — the formula is an exact definition, and results are rounded only for display.
What is the reverse conversion?
To go the other way, use the °F to °C converter.
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