Celsius to Fahrenheit converter
Type a Celsius value and read Fahrenheit instantly, with the other two scales alongside. The formula is °F = °C × 9/5 + 32.
- 0 °C = 32 °F
- 20 °C = 68 °F
- 37 °C = 98.6 °F
- 100 °C = 212 °F
How to convert Celsius to Fahrenheit
°F = °C × 9/5 + 32
A Celsius degree is 1.8 times the size of a Fahrenheit degree (100 of them cover freezing to boiling, against 180 on the Fahrenheit scale), and the two scales put freezing at different numbers: 0 °C and 32 °F. So you multiply first, then add 32. Step through it:
°F = °C × 9/5 + 32
Start with 25 °C: that many Celsius degrees above the freezing point of water.
The mental shortcut, and where it breaks
"Double it and add 30" gets you close for weather: 20 °C becomes 70 °F (exactly 68 °F). At 200 °C it gives 430 °F when the real answer is 392 °F, which matters in an oven. Our Celsius vs Fahrenheit guide plots the error.
°C to °F table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| −40 °C | −40 °F |
| −30 °C | −22 °F |
| −20 °C | −4 °F |
| −18 °C | −0.4 °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 |
| 70 °C | 158 °F |
| 80 °C | 176 °F |
| 90 °C | 194 °F |
| 100 °C | 212 °F |
| 150 °C | 302 °F |
| 180 °C | 356 °F |
| 200 °C | 392 °F |
| 220 °C | 428 °F |
| 250 °C | 482 °F |
Need more rows? The full temperature conversion chart goes from −50 to 300 °C.
Every Celsius value we have a page for
- −40 °C
- −30 °C
- −20 °C
- −18 °C
- −10 °C
- −5 °C
- 0 °C
- 1 °C
- 2 °C
- 3 °C
- 4 °C
- 5 °C
- 6 °C
- 7 °C
- 8 °C
- 9 °C
- 10 °C
- 11 °C
- 12 °C
- 13 °C
- 14 °C
- 15 °C
- 16 °C
- 17 °C
- 18 °C
- 19 °C
- 20 °C
- 21 °C
- 22 °C
- 23 °C
- 24 °C
- 25 °C
- 26 °C
- 27 °C
- 28 °C
- 29 °C
- 30 °C
- 31 °C
- 32 °C
- 33 °C
- 34 °C
- 35 °C
- 36 °C
- 37 °C
- 38 °C
- 39 °C
- 40 °C
- 41 °C
- 42 °C
- 43 °C
- 44 °C
- 45 °C
- 50 °C
- 60 °C
- 70 °C
- 80 °C
- 90 °C
- 100 °C
- 110 °C
- 120 °C
- 130 °C
- 140 °C
- 150 °C
- 160 °C
- 170 °C
- 175 °C
- 180 °C
- 190 °C
- 200 °C
- 210 °C
- 220 °C
- 230 °C
- 240 °C
- 250 °C
- 260 °C
Questions
How do you convert Celsius to Fahrenheit?
Use °F = °C × 9/5 + 32. For example, 20 °C is 68 °F.
What is 0 °C in Fahrenheit?
0 °C equals 32 °F.
What is 100 °C in Fahrenheit?
100 °C equals 212 °F.
Why use Fahrenheit?
Fahrenheit is the everyday scale in the United States and a few other places: water freezes at 32 °F and boils at 212 °F, so there are 180 degrees between them.
Is there a quick way to convert C to F in my head?
Double the Celsius number and add 30. It is close for everyday weather (within about 2 °F between −5 and 25 °C) but drifts badly for oven temperatures, so use the exact formula for cooking.
What temperature is 20 C in Fahrenheit?
20 °C is exactly 68 °F, a comfortable room temperature. 25 °C is 77 °F and 30 °C is 86 °F.
Why is −40 °C the same as −40 °F?
The two scales start at different points but Fahrenheit climbs 1.8 times faster, so they must meet once. Setting C × 9/5 + 32 = C gives C = −40.