Calculate weekday from 02 date columns (included time) then return value at least 0.5 day

Question

I'm practicing on Sharepoint and have an issue which looking for your guide: On sharepoint list, how can to calculate 02 [date & time] columns then return value should be at least 0.5 day as calculated unit. For detail:

StartDate: 6/14/2023 00:00
EndDate: 6/17/2023 12:00

--> return value should be 2.5 days;

Looking for your support on this. Thanks.