Postcard size: standard dimensions and maximum size

The size of a postcard is regulated in international mail. We show you how big a postcard is by default and how big it can be.

Postcard: standard size and maximum dimensions

• By default, a postcard is in DIN A6 format and is 10.5 x 14.8 cm in size.
• The formats DIN A5 (14.8 × 21.0 cm) and DIN long (11.0 × 22.0 cm) are also common postcard sizes.
• The maximum dimensions for a postcard are 12.5 x 23.5 cm. The minimum dimensions are 9 x 14 cm.
• Furthermore, a postcard must be at least 1.4 times longer than it is wide.
• The paper thickness is also regulated: the paper must weigh at least 150 grams per square meter. The upper limit is 500 grams per square meter.

In the next article we will show you how to print postcards yourself using Word.