Convert Celsius to Fahrenheit
Celsius to Fahrenheit is the temperature conversion for reading a metric thermometer in a country that uses Fahrenheit. Unlike distance, temperature scales don't just stretch — they also shift — so the formula has both a multiply and an add.
Celsius to Fahrenheit conversion table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 1 | 33.8 |
| 2 | 35.6 |
| 3 | 37.4 |
| 5 | 41 |
| 10 | 50 |
| 20 | 68 |
| 50 | 122 |
| 100 | 212 |
| 500 | 932 |
| 1,000 | 1,832 |
The formula
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32:
°F = °C × 9/5 + 32
The 9/5 (1.8) reflects that a Celsius degree is larger than a Fahrenheit degree, and the +32 lines up the two scales' freezing points.
A worked example
Convert a warm 30°C day to Fahrenheit:
30 × 9/5 + 32 = 54 + 32 = 86°F
Three anchor points worth memorizing
- 0°C = 32°F — water freezes
- 37°C = 98.6°F — body temperature
- 100°C = 212°F — water boils
If you can recall those, you can sanity-check almost any conversion at a glance.
A quick mental estimate
Double the Celsius value and add 30. For 30°C that gives 30 × 2 + 30 = 90°F — close to the exact 86°F. It's rough, but good enough to know whether to reach for a coat.
When you'll use it
Reading weather forecasts abroad, following recipes and oven temperatures across regions, and interpreting body-temperature readings between metric and imperial thermometers.
Frequently asked questions
What is the Celsius to Fahrenheit formula?
Multiply by 9/5 (that's 1.8) and then add 32: °F = °C × 9/5 + 32. The ×1.8 handles the different degree size, and the +32 shifts the freezing point.
What is 37°C in Fahrenheit?
98.6°F — normal human body temperature. It's a useful anchor point to remember alongside 0°C = 32°F and 100°C = 212°F.
Why isn't there a single multiplication like other conversions?
Because the two scales don't share a zero. Celsius puts 0 at water's freezing point; Fahrenheit puts 0 much colder. The +32 in the formula accounts for that offset.