Celsius to Fahrenheit Converter
Convert Celsius (°C) to Fahrenheit (°F) instantly. Free online temperature converter with conversion table and formula.
Why Convert Temperature from Celsius to Fahrenheit?
The United States and a few other countries use Fahrenheit (°F) as their primary temperature scale. If you're traveling to these countries, following American recipes, or reading weather reports from US sources, you'll need to convert Celsius to Fahrenheit.
Understanding temperature conversions is essential for cooking, weather interpretation, medical purposes, and scientific applications where different measurement systems are used.
What is Celsius?
The Celsius scale (°C), also known as centigrade, is the most widely used temperature scale globally. It is part of the International System of Units (SI) and is used in scientific contexts worldwide.
- Water freezes at 0°C
- Water boils at 100°C (at standard atmospheric pressure)
- Normal human body temperature is approximately 37°C
- Named after Swedish astronomer Anders Celsius
What is Fahrenheit?
The Fahrenheit scale (°F) is a temperature scale used primarily in the United States and some Caribbean nations. It was proposed by physicist Daniel Gabriel Fahrenheit in 1724.
- Water freezes at 32°F
- Water boils at 212°F (at standard atmospheric pressure)
- Normal human body temperature is approximately 98.6°F
- Room temperature is typically around 68-72°F
Celsius to Fahrenheit Conversion Formula
To convert Celsius to Fahrenheit, use the following formula:
Or equivalently:
Conversion Table: Celsius to Fahrenheit
Here is a quick reference table for common Celsius to Fahrenheit conversions:
| Celsius (°C) | Fahrenheit (°F) | Description |
|---|---|---|
| -40°C | -40.0°F | Extreme cold (same in both scales) |
| -20°C | -4.0°F | Very cold winter day |
| -10°C | 14.0°F | Cold winter day |
| 0°C | 32.0°F | Water freezing point |
| 10°C | 50.0°F | Cool day |
| 20°C | 68.0°F | Room temperature |
| 25°C | 77.0°F | Comfortable warm day |
| 30°C | 86.0°F | Hot summer day |
| 37°C | 98.6°F | Human body temperature |
| 40°C | 104.0°F | Very hot day |
| 50°C | 122.0°F | Extremely hot |
| 100°C | 212.0°F | Water boiling point |
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Convert Celsius to Fahrenheit instantly. To do it by hand, multiply by 9/5 (1.8) and add 32 — so 20°C = 68°F. Celsius is the metric temperature scale used in most of the world; Fahrenheit is used mainly in the United States.
How do I convert Celsius to Fahrenheit?
- Enter the temperature in Celsius.
- The Fahrenheit value appears automatically.
- Use it for weather, cooking, or travel.
What is the C to F formula?
°F = (°C × 9/5) + 32
Quick estimate: double the Celsius value and add 30 (25°C → 80°F, close to the exact 77°F).
Quick reference
| Celsius | Fahrenheit |
|---|---|
| 0°C | 32°F (freezing) |
| 20°C | 68°F (room temp) |
| 37°C | 98.6°F (body temp) |
| 100°C | 212°F (boiling) |
Frequently asked questions
What is 0°C in Fahrenheit?
0°C equals 32°F, the freezing point of water.
At what temperature are Celsius and Fahrenheit equal?
At −40°: −40°C is exactly −40°F.
Related tools & guides
- Fahrenheit to Celsius Converter (reverse)
- Temperature Converter (includes Kelvin)
- Celsius to Fahrenheit: formula & chart