Celsius to Fahrenheit Converter
Convert Celsius to Fahrenheit instantly. °F = (°C × 9/5) + 32. Use the converter above, or the formula, worked example and table below for common temperatures.
Live formula: 1 c → f
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How to Use the Celsius to Fahrenheit Converter
- 1. Enter a value in the left input field — the converter is already set to Celsius (°C) to Fahrenheit (°F).
- 2. Read the instant converted value and review the live formula line.
- 3. Use the swap button to reverse the direction, or copy either amount.
- 4. Check the table below for common °C to °F conversions.
Celsius to Fahrenheit Converter Formula
°F = (°C × 9/5) + 32
Worked example: 25 °C × 9/5 + 32 = 77 °F — Room temperature. 100 °C = 212 °F, the boiling point of water.
Celsius (°C) to Fahrenheit (°F) Conversion Table
| From Unit | To Unit | Input | Result |
|---|---|---|---|
| Celsius (°C) | Fahrenheit (°F) | -40 | -40 |
| Celsius (°C) | Fahrenheit (°F) | -20 | -4 |
| Celsius (°C) | Fahrenheit (°F) | 0 | 32 |
| Celsius (°C) | Fahrenheit (°F) | 10 | 50 |
| Celsius (°C) | Fahrenheit (°F) | 20 | 68 |
| Celsius (°C) | Fahrenheit (°F) | 25 | 77 |
| Celsius (°C) | Fahrenheit (°F) | 30 | 86 |
| Celsius (°C) | Fahrenheit (°F) | 37 | 98.6 |
| Celsius (°C) | Fahrenheit (°F) | 100 | 212 |
Did You Know?
- Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at standard atmospheric pressure.
- −40 °C and −40 °F are the same temperature — the only point where the two scales meet.
Frequently Asked Questions
What is 25 °C in Fahrenheit?
25 °C equals 77 °F (25 × 9/5 + 32 = 77).
What is the Celsius to Fahrenheit formula?
°F = (°C × 9/5) + 32. Multiply the Celsius temperature by 9, divide by 5, then add 32.
At what temperature are Celsius and Fahrenheit equal?
At −40°. −40 °C equals −40 °F — the two scales cross at that point.
Why does the US use Fahrenheit?
Fahrenheit predates the metric system and stayed in everyday use in the United States, while most of the world adopted Celsius. Weather, cooking and thermostats in the US still use Fahrenheit.