You want to get a MS Excel file from Google Calendar? Provide start date and end date, ..and you will get an Excel File containing all your events within the duration and also the total hours spent. BTW, jdk 1.5 is necessary.

If you put your work hours in Google Calendar then this app may become handy for you, you may want to know total hours worked in a week? You may like to get an excel sheet containing all the working hours with their labels? Then go download it and feel free to modify, extend and distribute to all the people out there who need it like me.. ;)

Update

Now you can convert your google calendar entries to excel directly from the web! Try it from here http://gcal2excel.syamantics.com/. No installation, no hassle! It converts description and location data as well.