°F = (°C × 9/5) + 32
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -20 | -4 |
| -10 | 14 |
| 0 | 32 |
| 5 | 41 |
| 10 | 50 |
| 15 | 59 |
| 20 | 68 |
| 25 | 77 |
| 30 | 86 |
| 35 | 95 |
| 37 | 98.6 |
| 40 | 104 |
| 50 | 122 |
| 60 | 140 |
| 80 | 176 |
| 100 | 212 |
| 150 | 302 |
| 200 | 392 |
| 250 | 482 |
To convert Celsius to Fahrenheit, multiply the Celsius temperature by 9/5 (or 1.8), then add 32. The formula is: °F = (°C × 9/5) + 32.
°F = (°C × 9/5) + 32
Convert 25°C to Fahrenheit: (25 × 1.8) + 32 = 45 + 32 = 77°F
Convert 180°C (baking temp) to Fahrenheit: (180 × 1.8) + 32 = 324 + 32 = 356°F
To convert Fahrenheit to Celsius, subtract 32 then multiply by 5/9: °C = (°F − 32) × 5/9.
\u2022 0°C (32°F) is the freezing point of water — when puddles turn to ice.
\u2022 20°C (68°F) is a comfortable room temperature.
\u2022 37°C (98.6°F) is normal human body temperature.
\u2022 100°C (212°F) is the boiling point of water at sea level.
Celsius and Fahrenheit are the two most widely used temperature scales. Celsius (also called centigrade) is used by every country in the world for weather, science, and daily life — except the United States, which uses Fahrenheit for weather forecasts, cooking, and everyday temperature references.
The Celsius scale sets 0° at the freezing point of water and 100° at the boiling point. The Fahrenheit scale sets 32° at freezing and 212° at boiling. This means the two scales overlap at exactly one point: −40°C = −40°F.
Understanding weather in Celsius when you think in Fahrenheit (or vice versa) is the most common reason for this conversion. Quick anchors: 0°C = freezing, 10°C = cool jacket weather, 20°C = pleasant, 30°C = hot, 40°C = dangerously hot. If you hear "it’s 35 degrees" in Europe, that’s 95°F — very hot.
Oven temperatures in recipes from different countries use different scales. A European recipe at 180°C equals 356°F. British recipes may reference gas marks too. Key cooking temps: 150°C = 302°F (slow roast), 180°C = 356°F (standard baking), 200°C = 392°F (hot oven), 220°C = 428°F (pizza, high-heat roasting).
Normal body temperature is 37°C (98.6°F). A fever is generally considered to start at 38°C (100.4°F). High fever is 39.4°C (103°F) or above. If a European thermometer reads 38.5°C, that’s 101.3°F — a definite fever.
For a rough estimate, double the Celsius and add 30. This gives: 10°C → 50°F (exact: 50°F ✔), 20°C → 70°F (exact: 68°F), 30°C → 90°F (exact: 86°F). Not precise, but fast and useful.
The formula is: °F = (°C × 9/5) + 32. Multiply the Celsius temperature by 1.8, then add 32.
0°C equals 32°F — the freezing point of water.
Normal body temperature is approximately 37°C, which equals 98.6°F.
Celsius and Fahrenheit are equal at −40°. That is, −40°C = −40°F.
The Fahrenheit scale was widely adopted before the Celsius scale was developed. While most countries switched to Celsius as part of metrication, the US retained Fahrenheit for everyday use due to cultural familiarity and the cost of switching.