Celsius to Fahrenheit Converter
The exact formula both ways — with fevers, weather, and oven marks charted.
Type in either field — the other updates instantly.
Celsius to Fahrenheit chart
| Celsius | Fahrenheit |
|---|---|
| -40 °C | -40 °F |
| -18 °C | -0.4 °F |
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 38 °C | 100.4 °F |
| 40 °C | 104 °F |
| 100 °C | 212 °F |
| 160 °C | 320 °F |
| 180 °C | 356 °F |
| 200 °C | 392 °F |
| 220 °C | 428 °F |
37°C = body temp · 38°C = fever line · 180°C = moderate oven
How this is calculated
°F = °C × 9⁄5 + 32 · °C = (°F − 32) × 5⁄9
Body temperature 37°C is 98.6°F, a 180°C oven is 356°F, and −40 is the one point where both scales agree. Temperature is an affine conversion — multiply AND shift — which is why doubling °C never doubles °F.
The chart pins the temperatures people actually check: fever thresholds (38°C/100.4°F), weather from freezing to heatwave, and the common oven settings (160/180/200/220°C).
Celsius to Fahrenheit is the direction of a metric traveller reading an American weather forecast or oven. The two scales cross at −40°, which is the only temperature where both read the same, and they diverge from there — a fact worth remembering because it is the fastest way to check a conversion has not been done backwards.
The formula multiplies by 9/5 and adds 32, and the addition is why temperature cannot be converted by a simple factor: the scales have different zero points as well as different step sizes. A consequence people miss is that a temperature difference converts differently from a temperature — a 10°C rise is an 18°F rise, not 50°F.
Frequently asked questions
What is the Celsius to Fahrenheit formula?
°F = °C × 9/5 + 32. Example: 20°C × 1.8 + 32 = 68°F. Going back: °C = (°F − 32) × 5/9, so 98.6°F − 32 = 66.6 × 5/9 = 37°C.
What is 37 degrees Celsius in Fahrenheit?
98.6°F — normal body temperature. The common fever threshold of 38°C is 100.4°F, which is why that pair appears in every clinic leaflet and in the chart above.
What temperature is the same in both scales?
−40. Setting °C = °F in the formula gives x = 1.8x + 32, so x = −40. It is the only crossing point, and a favorite trick question.
What is 180°C in Fahrenheit for baking?
356°F — recipes usually round it to 350°F. The chart carries 160/180/200/220°C (320/356/392/428°F), the four settings most ovens and recipes actually use.