What is the size of a 3 inch photo please? (cm) It is better to ask for a picture for reference!

The size of a 3-inch photo is 5.5 x copy 8.4cm, about the size of a playing card.

Corresponding size of commonly used ID photos:

1-inch 25mm x 35mm; 2-inch 35mm x 49mm; 3-inch 54mm x 82mm.

Wedding photo 40mm x 60mm; Hong Kong and Macao Travel Permit 33mm x 48mm; Visa to the U.S. 50mm x 50mm.

Japanese visa 45mm x 45mm; large two-inch 35mm × 45mm; passport 33mm × 48mm.

Graduate photo 33mm × 48mm; driver's license 21mm × 26mm; car license 60mm × 91mm.

Identity card 22mm × 32mm The size of the mainland's second-generation identity card has been changed to: 26mm × 32mm (resolution 350dpi).

Expanded Information:

Photo background color:

1, white background: used for passports, visas, driver's licenses, ID cards, second-generation ID cards, driver's licenses

2, white background: for passports, visas, driver's licenses, ID cards, second generation ID cards, driver's licenses, black-and-white ID cards, health insurance cards, Hong Kong and Macao Travel Permits, etc.

2, blue background: for graduation certificates, work certificates, resumes, etc. (blue values are: R:0 G:191 B:243 or C:67 M:2 Y:0 K:0).

3, red background: for insurance, health insurance, IC card, temporary residence permit, wedding photo? (Red color value is:R:255 G:0 B:0 or C:0 M:99 Y:100 K:0).