Passport Photo Sizes and Digital Specs

Passport photo sizes are quoted in inches, millimetres or pixels depending on who publishes them. The US uses 2 x 2 inches, much of Europe and the UK 35 x 45 mm, Canada 50 x 70 mm, and online applications set their own pixel dimensions and file size limits. Head size, measured from chin to crown, is set as a range, and background color rules vary from plain white to light grey.

These guides convert between the units, explain what DPI means for a printed photo, compare head size and background rules across documents, and list the pixel and kilobyte limits of the main upload portals.

To convert a size yourself, the photo size calculator turns millimetres or inches into pixels at any DPI and lists every document's published size. The exact spec of each document, from print size to file limits, is on its own page under all documents.