The conversion

750°F = 398.89°C

°C = (°F − 32) × 5/9, so (750 − 32) × 5/9 = 398.89.

750 °F is well outside the range outdoor air occupies on Earth, so there is no useful weather description for it — this page is arithmetic rather than a forecast.

Convert something else

68°F

The range either side

Neighbouring values, for when the number you actually wanted was a degree or two away.

Fahrenheit to Celsius either side of 750 °F.
FahrenheitCelsius
745 °F396.11 °C
746 °F396.67 °C
747 °F397.22 °C
748 °F397.78 °C
749 °F398.33 °C
750 °F398.89 °C
751 °F399.44 °C
752 °F400 °C
753 °F400.56 °C
754 °F401.11 °C
755 °F401.67 °C

The other direction

398.89 °C converts back to 750 °F, which is the same relationship read the other way. Going from Celsius to Fahrenheit, multiply by 9/5 first and then add 32. Adding first is the usual mistake.

The full converter handles any value, in either direction, including kelvin, and shows the formula as it works.