How to change the Datatype of Existing Field

Hi Folks,

I have a requirement to change the datatype of a particular field.
More specifically, I need to change the datatype of a field called Contract Expiry, from Data to DateTime datatype.

I can’t remove and recreate a filed as it is already being used for several records, so is there any other way to achieve the same.

Thanks is advance.

is this data to datetime? or date to datetime?

It’s Date (sorry for the spelling mistake)

I need to convert the filed from Date to DateTime.

Is there any solution available for this? Except deleting the field and re-create the same with the new Data type