Celsius to Fahrenheit Converter
Convert Celsius (°C) to Fahrenheit (°F). Results update as you type, with a conversion table and the formula below.
1 °C =
33.8 °F
°C to °F conversion table
| °C | °F |
|---|---|
| 1 | 33.8 |
| 2 | 35.6 |
| 3 | 37.4 |
| 4 | 39.2 |
| 5 | 41 |
| 6 | 42.8 |
| 7 | 44.6 |
| 8 | 46.4 |
| 9 | 48.2 |
| 10 | 50 |
| 15 | 59 |
| °C | °F |
|---|---|
| 20 | 68 |
| 25 | 77 |
| 30 | 86 |
| 40 | 104 |
| 50 | 122 |
| 60 | 140 |
| 70 | 158 |
| 80 | 176 |
| 90 | 194 |
| 100 | 212 |
How to use
- Type the °C value to convert.
- The result appears instantly in °F; the swap button reverses direction.
- For common values, check the conversion table below.
Frequently asked questions
How many °F is 1 °C?+
Temperature isn't proportional — it follows the formula °F = °C × 9/5 + 32. Example: 25 °C → 25 × 1.8 + 32 = 77 °F.
Is there a quick way to estimate Fahrenheit in my head?+
Subtract 30 and halve it. 70°F becomes (70−30)÷2 = 20°C, close to the true 21.1°C. Use the calculator above when it needs to be exact.
How accurate are the results?+
The math uses internationally standardized definitions; only the display is rounded to significant digits. Accurate enough for school, work and daily life.
How do I convert °F back to °C?+
Hit the swap arrows in the middle of the converter above — the direction flips and your value is kept.
Is it really free?+
Yes. No sign-up, no install, no usage limits. The site is ad-supported.
Unit guide
The formula
°F = °C × 9/5 + 32. Example: 25 °C → 25 × 1.8 + 32 = 77 °F.
Celsius and Fahrenheit place zero differently (water freezes at 0 °C = 32 °F), so the conversion needs both a multiply and an offset. The converter above applies this exact formula.
When is this conversion needed?
Useful for foreign weather forecasts, oven temperatures in recipes, US travel and science material.
Where Celsius meets Fahrenheit
American weather forecasts, oven temperatures in English recipes, and thermometers bought abroad. The two scales differ in both their zero point and their step size, so unlike every other conversion here it takes more than a single multiplication — there is a 32 to subtract or add.