Microsoft Excel calendars. Practical, versatile and free to download and print. These calendar templates are multi-purpose and suitable for a great variety of uses. The files may be used free of charge for non-commercial use. The calendar template in this website can be opened with Microsoft Excel. You can customize in your ideas content. All templates downloadable below are in US letter paper format (as used in the USA, Canada, Mexico, the Philippines and some South American countries). For templates in A4 paper format (the international standard paper size used in all other parts of the world).