Celsius to Fahrenheit (°C to °F) Converter – 0, 25, 30, 100°C in °F
Convert Celsius to Fahrenheit and Fahrenheit to Celsius. Free online °C to °F calculator for weather, cooking, HVAC, and science.
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Celsius to Fahrenheit – Instant Calculator
Celsius (°C)
Fahrenheit (°F)
Common Temperature Examples
0 °C = 32 °F
Freezing point of water
25 °C = 77 °F
Room temperature
37 °C = 98.60 °F
Body temperature
100 °C = 212 °F
Boiling point of water
Celsius to Fahrenheit Converter for Weather, Cooking, and HVAC
Instantly convert Celsius to Fahrenheit with this free online calculator. Perfect for weather forecasts, kitchen recipes, HVAC settings, and scientific work. Uses the exact linear conversion formula for precise results.
How to Use
Enter Celsius and see Fahrenheit instantly. Use the swap button to convert °F back to °C. Copy results for quick sharing.
Celsius to Fahrenheit: Definition, History, Uses, and Examples
Definition
Celsius (°C) is a metric temperature scale where 0° is the freezing point and 100° is the boiling point of water at 1 atm. Fahrenheit (°F) is a temperature scale used primarily in the US. The conversion is linear: °F = (°C × 9/5) + 32.
Origin or History
The Celsius scale was proposed by Anders Celsius in 1742 and later inverted to today’s form. The Fahrenheit scale was introduced by Daniel Gabriel Fahrenheit around 1724, based on fixed reference points including a brine mixture and human body temperature.
Current Use
- Weather: Daily forecasts (°C worldwide, °F in the US).
- Cooking: Oven and recipe temperatures (often °F in US kitchens).
- HVAC: Thermostat settings in homes and buildings.
- Science: Data interchange between °C and °F as needed.
Examples
| Celsius (°C) | Fahrenheit (°F) | Context |
|---|---|---|
| 0 | 32 | Water freezing point |
| 25 | 77 | Room temperature |
| 37 | 98.6 | Human body temperature |
| 100 | 212 | Water boiling point |