How to convert Fahrenheit to Celsius
°C = (°F − 32) × 5/9
subtract 32 first, then multiply by 5/9 (÷ 1.8)
Shortcut: Subtract 30 and halve: 70 °F ≈ 20 °C (exactly 21.1 °C).
°F to °C table
| Fahrenheit | Celsius |
|---|---|
| −40°F | −40°C |
| 0°F | −17.78°C |
| 10°F | −12.22°C |
| 20°F | −6.67°C |
| 32°F | 0°C |
| 40°F | 4.44°C |
| 50°F | 10°C |
| 60°F | 15.56°C |
| 65°F | 18.33°C |
| 68°F | 20°C |
| 70°F | 21.11°C |
| 72°F | 22.22°C |
| 75°F | 23.89°C |
| 80°F | 26.67°C |
| 90°F | 32.22°C |
| 98.6°F | 37°C |
| 100°F | 37.78°C |
| 212°F | 100°C |
| 300°F | 148.89°C |
| 325°F | 162.78°C |
| 350°F | 176.67°C |
| 375°F | 190.56°C |
| 400°F | 204.44°C |
| 450°F | 232.22°C |
Values are calculated with exact factors and rounded for the table; the converter above shows full precision.
Worked examples
70°F to degrees Celsius
(70 − 32) × 5/9
21.11°C
98.6°F to degrees Celsius
(98.6 − 32) × 5/9
37°C
350°F to degrees Celsius
(350 − 32) × 5/9
176.67°C
Questions
What is 70 °F in Celsius?
About 21.11 °C.
What is 350 °F in Celsius?
About 176.67 °C; recipes often say 175–180 °C.
Is 100 °F a fever?
It is about 37.78 °C, above the usual 37 °C reference. Thresholds vary by method and person, so ask a clinician.
Related conversions
- Celsius to Fahrenheit (the reverse)
- Temperature converter: every temperature unit, with the full drawing
The history: Fahrenheit, Celsius and Kelvin: the story of three scales.