Celsius to Fahrenheit
Convert temperatures from Celsius to Fahrenheit.
Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to convert degrees Celsius to degrees Fahrenheit
0 °C = 32 °F. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level.
Formula: °F = °C × 9/5 + 32
Examples
- 20 °C = 68 °F
- 37 °C = 98.6 °F
- -10 °C = 14 °F
°C to °F conversion table
| Degrees Celsius (°C) | Degrees Fahrenheit (°F) |
|---|---|
| -40 °C | -40 °F |
| -30 °C | -22 °F |
| -20 °C | -4 °F |
| -10 °C | 14 °F |
| -5 °C | 23 °F |
| 0 °C | 32 °F |
| 5 °C | 41 °F |
| 10 °C | 50 °F |
| 15 °C | 59 °F |
| 20 °C | 68 °F |
| 21 °C | 69.8 °F |
| 22 °C | 71.6 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 35 °C | 95 °F |
| 37 °C | 98.6 °F |
| 40 °C | 104 °F |
| 50 °C | 122 °F |
| 60 °C | 140 °F |
| 100 °C | 212 °F |
| 180 °C | 356 °F |
| 200 °C | 392 °F |
Values are rounded to 2 decimal places.
How to use Celsius to fahrenheit
- Enter the values you want to calculate and choose the relevant units or settings.
- The result updates as you type. Adjust the available settings if needed.
- Review the result, then use Copy result or a download link when available.
Useful next steps
How Celsius to fahrenheit works
This converter changes a temperature in degrees Celsius into degrees Fahrenheit as you type, using the exact formula °F = °C × 9/5 + 32. It accepts decimals, negative values and scientific notation such as 1e3, and rounds the answer to 12 significant digits. It converts absolute temperatures only, so it is not suitable for temperature differences, and values below absolute zero (−273.15 °C) are rejected. The conversion runs in your browser.
Before you start
Check whether your number is an actual temperature or a change in temperature. Use a period as the decimal point, since a comma such as 1,5 is not accepted.
A worked example
Entering 37 °C returns 98.6 °F, and 20 °C returns 68 °F. Entering −40 returns −40, the one point where both scales match.
Continue your workflow: Length, Weight, Temperature.
Common questions
What is the formula to convert Celsius to Fahrenheit?
Multiply the Celsius temperature by 9/5 (or 1.8) and add 32. For example, 25 °C × 1.8 = 45, and 45 + 32 = 77 °F. To go the other way, subtract 32 from the Fahrenheit value and multiply by 5/9.
Is there a quick way to estimate Fahrenheit in my head?
Double the Celsius value and add 30. That gives 70 °F for 20 °C, close to the exact 68 °F. The shortcut drifts further off at very hot or very cold temperatures, so use the exact formula or this converter when precision matters, such as for cooking or medical readings.
How do I convert a temperature change, not a temperature?
Do not add 32. A change of 1 °C equals a change of 1.8 °F, so a 10 °C rise is an 18 °F rise. This tool always adds the 32 degree offset, so entering 10 here would give 50 °F, which is wrong for a difference.
At what temperature are Celsius and Fahrenheit the same?
At −40. Entering −40 °C in this converter returns exactly −40 °F. Above that point the Fahrenheit number is always higher than the Celsius number, and below it the Fahrenheit number is lower.
What is normal body temperature in Fahrenheit?
37 °C is commonly quoted as normal body temperature, and this converter shows it as exactly 98.6 °F. Healthy body temperature varies a little from person to person and through the day, so treat 98.6 °F as a reference point rather than a strict rule.