How to use this tool
- Pick the kind of measurement: length, weight, temperature and so on.
- Type a value and choose the unit you are converting from and to.
- The answer appears at once, and the table lists the value in every other unit.
Fahrenheit to Celsius chart
| °F | °C | What it means |
|---|---|---|
| 32 | 0 | Water freezes |
| 68 | 20 | Room temperature |
| 98.6 | 37 | Normal body temperature |
| 100.4 | 38 | Fever threshold commonly used |
| 104 | 40 | High fever, seek advice |
| 350 | 177 | Baking (gas mark 4) |
| 425 | 218 | Roasting (gas mark 7) |
US recipes and weather use Fahrenheit; the UK, Pakistan, India and most other countries use Celsius.
Frequently asked questions
What is 100 °F in Celsius?
37.8 °C.
What is 350 °F in Celsius?
176.7 °C, usually rounded to 180 °C in UK recipes.
Is 99 °F a fever?
Not usually. A fever is commonly taken as 100.4 °F (38 °C) or higher.
Need more detail? See the full Unit Converter guide.
Sources and references
- NIST Handbook 44 Appendix C: General tables of units of measurement
- BIPM: The International System of Units (SI Brochure)