The Fahrenheit and Celsius Conversion formula is C = (F - 32) * 5/9, so replace Fahrenheit with 1800 and solve for Celsius:

C = (1800-32) *5/9

C =1768* 5/9

C = 982.22

So,1800 degrees Fahrenheit is 982.22 degrees in Celsius.

C = (1800-32) *5/9

C =1768* 5/9

C = 982.22

So,1800 degrees Fahrenheit is 982.22 degrees in Celsius.