Fahrenheit to Celsius converter
To convert Fahrenheit to Celsius, subtract 32 and divide by 1.8. For example, 350 °F is 176.67 °C.
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350 degrees Fahrenheit =
176.667°C
Formula: °C = (°F − 32) ÷ 1.8
Show the steps
- Subtract 32: 350 − 32 = 318
- Divide by 1.8: 318 ÷ 1.8 = 176.667 °C
Definitions used: t/°C = (t/°F − 32) / 1.8; t/°C = T/K − 273.15.
Source: NIST SP 811, Appendix B.8, checked on .
How to convert degrees Fahrenheit to degrees Celsius
The two scales have different zeros and different step sizes, so the conversion takes two operations. NIST writes the rule as: t/°C = (t/°F − 32) / 1.8.
°C = (°F − 32) ÷ 1.8
Worked example: 350 °F to °C
- Subtract 32: 350 − 32 = 318
- Divide by 1.8: 318 ÷ 1.8 = 176.667 °C
- Answer: 350 °F = 176.667 °C.
Degrees Fahrenheit to degrees Celsius chart
| Degrees Fahrenheit (°F) | Degrees Celsius (°C) |
|---|---|
| -40 | -40 |
| 0 | -17.7778 |
| 32 | 0 |
| 40 | 4.44444 |
| 50 | 10 |
| 60 | 15.5556 |
| 68 | 20 |
| 70 | 21.1111 |
| 72 | 22.2222 |
| 75 | 23.8889 |
| 80 | 26.6667 |
| 90 | 32.2222 |
| Degrees Fahrenheit (°F) | Degrees Celsius (°C) |
|---|---|
| 98.6 | 37 |
| 100 | 37.7778 |
| 104 | 40 |
| 212 | 100 |
| 300 | 148.889 |
| 325 | 162.778 |
| 350 | 176.667 |
| 375 | 190.556 |
| 400 | 204.444 |
| 425 | 218.333 |
| 450 | 232.222 |
| 500 | 260 |
Values rounded to 6 significant digits. Type any other number in the converter at the top of the page.
What is 350 °F in Celsius?
350 °F is 176.67 °C. Recipes usually round it to 180 °C. 400 °F is 204.44 °C and 450 °F is 232.22 °C.
How do you convert Fahrenheit to Celsius in your head?
Subtract 30 and halve the result. 80 °F → 50 → 25 °C (exact: 26.67 °C). Good for weather; too rough for cooking or medicine.
More questions about degrees Fahrenheit and degrees Celsius
What is 98.6 °F in Celsius?
98.6 °F is 37 °C.
What is 100 °F in Celsius?
100 °F is 37.78 °C. A fever of 104 °F is 40 °C.
What is 72 °F in Celsius?
72 °F, a common thermostat setting, is 22.22 °C.
Is the formula the same as multiplying by 5/9?
Yes. Dividing by 1.8 is the same as multiplying by 5/9; NIST writes it as t/°C = (t/°F − 32)/1.8.
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Sources and limits
- NIST SP 811, Appendix B.8
NIST Special Publication 811, Guide for the Use of the SI, Appendix B.8: Factors for Units Listed Alphabetically (page updated August 18, 2025).
National Institute of Standards and Technology. Edition or effective date: . Text in force when checked on .
This is a calculation aid, not an official measurement service. Results are rounded to 6 significant digits for display. For trade, engineering, medical dosing or legal documents, confirm the figure in the official source. Nothing you type leaves your browser.