No, but by using Replace Field Contents, you can change the case of every record in your table for a given field so that could save you some effort.
Make a back up copy of your file
Click in the field.
Select Replace Field Contents from the Records menu
Select the calculation option and enter Proper ( YourTable::YourFieldName )
Perform the Replace
Don't do this on a mult-user system at a time when other users might be editing the same records.