Celsius to Fahrenheit Converter
°F = (°C × 9/5) + 32 — convert any temperature instantly
Celsius to Fahrenheit Formula
To convert Celsius to Fahrenheit, multiply by 9/5 (1.8) and add 32. To convert back, subtract 32 and multiply by 5/9 (0.5556).
Temperature Conversion Chart
Click any row to load it into the converter above.
| Celsius (°C) | Fahrenheit (°F) | Reference |
|---|---|---|
| -40°C | -40°F | Same on both scales |
| -20°C | -4°F | Cold winter day |
| -10°C | 14°F | Below freezing |
| 0°C | 32°F | Water freezes |
| 10°C | 50°F | Cool day |
| 20°C | 68°F | Room temperature |
| 25°C | 77°F | Warm day |
| 30°C | 86°F | Hot summer day |
| 37°C | 98.6°F | Body temperature |
| 40°C | 104°F | Fever / very hot day |
| 100°C | 212°F | Water boils |
| 180°C | 356°F | Oven — slow bake |
| 200°C | 392°F | Oven — moderate |
How to Convert Celsius to Fahrenheit
The Celsius scale sets 0° as the freezing point and 100° as the boiling point of water. The Fahrenheit scale sets 32° as freezing and 212° as boiling. To go between them, use the formula: °F = (°C × 1.8) + 32.
Quick estimate: Double the °C value and add 30 to get an approximate °F. For 20°C: (20 × 2) + 30 = 70°F (exact: 68°F). Accurate within a few degrees for everyday temperatures.
Oven temperature conversions
- 150°C = 302°F (low/slow oven)
- 175°C = 347°F (moderate oven — most baking)
- 200°C = 392°F (moderately hot oven)
- 220°C = 428°F (hot oven — pizza, bread)
- 250°C = 482°F (very hot oven)
Why Temperature Conversion Matters
- International recipes — European and UK recipes list oven temperatures in °C; US recipes use °F. Incorrect conversion leads to over- or under-baked food.
- Weather forecasts — weather apps from different countries report temperature in different units. Convert to understand conditions when traveling.
- Medical & health — body temperature 37°C (98.6°F) is normal; fever typically begins at 38°C (100.4°F). Thermometers in different countries use different scales.
- Science & chemistry — most scientific work uses Celsius or Kelvin. US lab equipment often displays in Fahrenheit — convert to maintain consistent data.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
Use the formula: °F = (°C × 1.8) + 32. Example: 25°C × 1.8 + 32 = 77°F.
What is 37°C in Fahrenheit?
37°C = 98.6°F. This is normal human body temperature. Formula: 37 × 1.8 + 32 = 98.6°F.
What is 100°C in Fahrenheit?
100°C = 212°F. This is the boiling point of water at sea level (1 atm pressure).
What is 0°C in Fahrenheit?
0°C = 32°F. This is the freezing point of water. Below this temperature, water becomes ice.
What temperature is the same in °C and °F?
−40° is the same in both Celsius and Fahrenheit. This is the only temperature where both scales agree.
How do I convert Fahrenheit to Celsius?
Use: °C = (°F − 32) × 5/9. Example: (98.6 − 32) × 5/9 = 37°C. Use the °F → °C mode above.
What is room temperature in Fahrenheit?
Room temperature is typically 20–22°C = 68–72°F. The most commonly used "standard" room temperature is 20°C (68°F).