400°F in °C
400°F is 204.44°C. To convert Fahrenheit to Celsius, take away 32, then divide by 1.8.
Formula from NIST.
Show the workings
| Step | Sum | Answer |
|---|---|---|
| Take away 32 | 400 − 32 | 368 |
| Divide by 1.8 | 368 ÷ 1.8 | 204.444 °C |
Where the figures come from
- Fahrenheit reading at the freezing point used in the conversion: 32 °F. Source: NIST Guide to the SI, Appendix B.9: factors for units listed by kind of quantity. Checked 14 November 2026.
- Fahrenheit degrees in one Celsius degree: 1.8. Source: NIST Guide to the SI, Appendix B.9: factors for units listed by kind of quantity. Checked 14 November 2026.
Nearby temperatures
| °F | °C |
|---|---|
| 250°F | 121.11°C |
| 275°F | 135°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 |
| 425°F | 218.33°C |
| 450°F | 232.22°C |
| 475°F | 246.11°C |
| 500°F | 260°C |
How to convert Fahrenheit to Celsius
The US National Institute of Standards and Technology gives the conversion as °C = (°F − 32) ÷ 1.8. So to go from °F to °C, take away 32, then divide by 1.8. For example, 400°F is 20444°C.. See NIST's table.
The two scales meet at −40, where −40°C and −40°F are the same temperature.