Celsius to Fahrenheit Converter
Convert °C to °F for weather forecasts, ovens and body temperature, with a full reference table.
The conversion formula
Worked example: a pleasant 25 °C day becomes (25 × 9 ÷ 5) + 32 = 45 + 32 = 77 °F. And the famous crossover: −40 °C and −40 °F are exactly the same temperature.
Temperature is the conversion people need most while travelling: a forecast of 30° means a heatwave in London (86 °F) and a mild day in Miami (30 °F would be below freezing). Cooking adds a second collision — recipes written for one scale and ovens marked in the other — where the table below (and the landmarks 180 °C = 356 °F for baking, 200 °C = 392 °F for roasting) saves dinner.
Useful anchors to memorise: water freezes at 0 °C / 32 °F and boils at 100 °C / 212 °F; normal body temperature is about 37 °C / 98.6 °F; a fever starts around 38 °C / 100.4 °F. For a fast mental estimate, double the Celsius and add 30 — at 20 °C that gives 70 °F versus the exact 68 °F.
°C to °F conversion table
| °C | °F |
|---|---|
| -40 °C | -40 °F |
| -35 °C | -31 °F |
| -30 °C | -22 °F |
| -25 °C | -13 °F |
| -20 °C | -4 °F |
| -15 °C | 5 °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 |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 35 °C | 95 °F |
| 40 °C | 104 °F |
| 45 °C | 113 °F |
| 50 °C | 122 °F |
| 55 °C | 131 °F |
| 60 °C | 140 °F |
| 65 °C | 149 °F |
| 70 °C | 158 °F |
| 75 °C | 167 °F |
| 80 °C | 176 °F |
| 85 °C | 185 °F |
| 90 °C | 194 °F |
| 95 °C | 203 °F |
| 100 °C | 212 °F |
Frequently asked questions
What is the °C to °F formula?
Multiply the Celsius temperature by 9/5 (or 1.8) and add 32. The reverse is: subtract 32, then multiply by 5/9. This page's converter uses a special calculation to handle the +32 offset correctly in both directions.
At what temperature are Celsius and Fahrenheit equal?
−40. It is the single point where the two scales cross, which makes it a handy sanity check for any conversion.
What is 180 °C in Fahrenheit for baking?
356 °F — most recipes round it to 350 °F. Similarly 200 °C = 392 °F (≈400 °F) and 160 °C = 320 °F (≈325 °F).
Is 100 °F a fever?
Normal body temperature averages about 98.6 °F (37 °C), and 100.4 °F (38 °C) is the commonly used fever threshold. 100 °F alone is slightly warm but below that line.