How to Convert Celsius to Fahrenheit
Use this formula:
°F = (°C × 9/5) + 32
Multiply Celsius by 9/5 (or 1.8), then add 32. The 32 aligns the freezing point of water (0 °C = 32 °F).
Worked example: 20 °C to Fahrenheit
20 × 9/5 = 36, then 36 + 32 = 68 °F. So 20 °C = 68 °F (room temperature).
More examples: 0 °C = 32 °F, 100 °C = 212 °F, 37 °C = 98.6 °F. To convert °F to °C, use Fahrenheit to Celsius.
When Is Celsius to Fahrenheit Conversion Used?
Converting from Celsius to Fahrenheit is useful when you have metric temperatures and need US or everyday °F:
- Weather and travel: Most of the world uses °C; the US reports in °F. Converting helps when planning travel or comparing forecasts.
- Recipes and cooking: Oven temperatures may be in °C (metric) or °F (US). Converting ensures correct baking and cooking temps.
- Health and body temperature: Thermometers or medical info may be in °C; US audiences often think in °F (e.g. 98.6 °F).
- Science and education: Results may be in Celsius; converting to Fahrenheit helps when presenting to US readers or for homework.
About Celsius
The Celsius scale sets the freezing point of water at 0 °C and boiling at 100 °C (at standard pressure). It is the standard temperature scale in most countries and in science. Named after Anders Celsius.
About Fahrenheit
The Fahrenheit scale sets the freezing point of water at 32 °F and boiling at 212 °F. It is mainly used in the United States for weather, cooking, and body temperature. Named after Daniel Gabriel Fahrenheit.
Frequently Asked Questions
- How do I convert Celsius to Fahrenheit?
- Use °F = (°C × 9/5) + 32. Example: 20 °C → (20 × 9/5) + 32 = 68 °F.
- What is 0 Celsius in Fahrenheit?
- 0 °C = 32 °F (freezing point of water).
- What is 100 Celsius in Fahrenheit?
- 100 °C = 212 °F (boiling point of water at sea level).
- What is 37 Celsius in Fahrenheit?
- 37 °C = 98.6 °F (normal human body temperature).
- Why do we add 32 in the formula?
- The 32 aligns the zero points so that 0 °C (freezing) equals 32 °F. The 9/5 ratio converts the size of one degree.
- How do I convert Fahrenheit back to Celsius?
- Use °C = (°F − 32) × 5/9. Or use our Fahrenheit to Celsius converter.