Celsius to Fahrenheit (°C to °F)
Convert Celsius to Fahrenheit in one step, learn the formula, and use the quick temperature reference table.
Quick answer: To convert Celsius to Fahrenheit, multiply by 9/5 (1.8) and add 32: °F = (°C × 9/5) + 32. For example, 20 °C = (20 × 1.8) + 32 = 68 °F. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F).
Celsius to Fahrenheit formula
The conversion scales by 9/5 and shifts the zero point by 32 degrees:
°F = (°C × 9/5) + 32
Equivalently, °F = °C × 1.8 + 32. The 1.8 factor stretches each Celsius degree, and the +32 accounts for the different freezing point on the Fahrenheit scale.
How to convert °C to °F in 3 steps
- Take the temperature in Celsius (for example, 37 °C).
- Multiply by 1.8 → 37 × 1.8 = 66.6, then add 32 → 66.6 + 32 = 98.6.
- Read the result → 37 °C = 98.6 °F (normal body temperature).
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| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 °C | -40 °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 |
Celsius vs Fahrenheit
Celsius (°C) is used in most of the world and in science, with water freezing at 0° and boiling at 100°. Fahrenheit (°F) is used mainly in the United States. The two scales cross at -40°, where °C and °F are exactly equal.
Frequently asked questions
How do you convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 (1.8) and add 32. For example, 20 °C = (20 × 1.8) + 32 = 68 °F.
What is 0 °C in Fahrenheit?
0 °C equals 32 °F, the freezing point of water.
What is 37 °C in Fahrenheit?
37 °C equals 98.6 °F, which is normal human body temperature.