Celsius to Fahrenheit Converter
To convert Celsius to Fahrenheit, use the formula F = (C × 9/5) + 32. For example, 25 Celsius equals 77 Fahrenheit. Use the calculator above for your value, or check the examples and reference table below.
Formula
F = (C × 9/5) + 32
Use the temperature formula to convert Celsius values to Fahrenheit.
Example Conversions
0 Celsius (C)
32 Fahrenheit (F)
1 Celsius (C)
33.8 Fahrenheit (F)
25 Celsius (C)
77 Fahrenheit (F)
100 Celsius (C)
212 Fahrenheit (F)
212 Celsius (C)
413.6 Fahrenheit (F)
Conversion Table
| Celsius (C) | Fahrenheit (F) |
|---|---|
| 0 | 32 |
| 1 | 33.8 |
| 10 | 50 |
| 20 | 68 |
| 25 | 77 |
| 32 | 89.6 |
| 37 | 98.6 |
| 50 | 122 |
| 75 | 167 |
| 100 | 212 |
| 212 | 413.6 |
| 273.15 | 523.67 |
How to Convert Manually
Use these steps to convert Celsius values to Fahrenheit without the calculator.
- Write down the value in Celsius (C) that you want to convert.
- Apply the formula: F = (C × 9/5) + 32.
- For example, converting 10 Celsius gives 50 Fahrenheit.
- Label the result as Fahrenheit (F).
About Celsius and Fahrenheit
The degree Celsius is the SI temperature unit for everyday use, with 0 °C at the freezing point and 100 °C at the boiling point of water at standard pressure. It is offset from the kelvin by exactly 273.15. The degree Fahrenheit sets water's freezing point at 32 °F and boiling point at 212 °F, dividing the interval into 180 degrees. The US uses it for weather, cooking, and medicine. The two scales are related by the formula F = (C × 9/5) + 32. Celsius is used in weather forecasts outside the US and in cooking and oven settings in metric countries. Fahrenheit is used in US weather forecasts and thermostats.
Precision and Rounding:Temperature conversions are formula-based, not factor-based, so apply the full formula before rounding. Whole degrees are fine for weather and cooking; lab work, medicine, and HVAC commissioning usually carry one or two decimal places.
See our guide to converting temperature manually for a full walkthrough of the formulas.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Celsius equals59Fahrenheit.
15 C -> 59 F
FAQ
How do I convert Celsius to Fahrenheit?
Use the temperature formula to convert Celsius values to Fahrenheit.
What is the formula for Celsius to Fahrenheit?
The formula is F = (C × 9/5) + 32.
How many Fahrenheit are in 1 Celsius?
1 Celsius equals 33.8 Fahrenheit.
Can I convert Fahrenheit back to Celsius?
Yes. 1 Fahrenheit equals -17.22222222 Celsius, and the related converter can reverse the calculation.
What are common names for Celsius and Fahrenheit?
Celsius is shown as C and may also be searched as celsius, centigrade, °C. Fahrenheit is shown as F and may also be searched as fahrenheit, °F.
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