Use this free online Celsius to Fahrenheit converter to quickly convert °C to °F. Simply enter the temperature in Celsius, and the tool will instantly display the equivalent in Fahrenheit.
| Celsius | Fahrenheit |
|---|
Formula: °F = (°C × 9/5) + 32
How to Convert Celsius to Fahrenheit
Unlike most unit conversions, Celsius to Fahrenheit is not a simple multiplication — it involves both scaling and an offset, since the two scales have different zero points.
Formula: °F = (°C × 9/5) + 32
Example: Convert 25°C to °F. (25 × 9/5) + 32 = 45 + 32 = 77°F So, 25°C is equal to 77°F.
What is Celsius?
Celsius (°C), also known as centigrade, is a temperature scale where water freezes at 0°C and boils at 100°C at standard atmospheric pressure. It is the standard temperature unit used in most countries around the world.
What is Fahrenheit?
Fahrenheit (°F) is a temperature scale where water freezes at 32°F and boils at 212°F. It is primarily used in the United States and a few surrounding territories for everyday temperature measurements, including weather forecasts.
Celsius to Fahrenheit Relationship
°F = (°C × 9/5) + 32 °C = (°F − 32) × 5/9
Both scales meet at exactly −40 degrees, where −40°C equals −40°F.
°C to °F Conversion Table
| Celsius (°C) | Fahrenheit (°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 |
Solved Examples
Example 1: Convert 15°C to °F. (15 × 9/5) + 32 = 27 + 32 = 59°F
Example 2: Convert 40°C to °F. (40 × 9/5) + 32 = 72 + 32 = 104°F
Example 3: What is normal human body temperature in °F? 37°C converts to 98.6°F, the commonly cited normal body temperature.
Frequently Asked Questions
Multiply the Celsius value by 9/5, then add 32, to get the equivalent in Fahrenheit.
Both scales are equal at −40 degrees −40°C is the same as −40°F.
Not always. Above −40 degrees, Fahrenheit values are higher than Celsius values for the same temperature, but below −40 the relationship reverses.
Fahrenheit is mainly used in the United States for everyday temperature reporting, while most of the world uses Celsius.