Hi Johan,
Go to the list view from the contacts app and make sure your search filter is not put to "1-80 / xxx" but "1-xxx / xxx", this depends on how many records you have. Next tick on the checkbox at the left to select all items and then click on "Action > Export":
After doing this a dialog will popup where you can choose which fields you want to export. Double click the fields you want to export and then click on "Export to file" at the bottom of the dialog:
Afterwards you'll get a CSV with all your contacts.
Regards,
Yenthe