A passport-size photo is a standardized ID photo used for passports and similar documents. The exact size depends on the country, but a common standard is 2 x 2 inches (51 x 51 mm) for U.S. passports, while many other countries use 35 x 45 mm.

Quick Scoop

For a proper passport photo, the image usually needs to be:

  • Color, not black-and-white.
  • Taken against a plain white or light background.
  • Frontal, with a neutral expression and clear visibility of the face.

Common Sizes

Country/Use| Common Size
---|---
U.S. passport| 2 x 2 inches (51 x 51 mm) 15
India passport| 2 x 2 inches / 50 x 50 mm / 5 x 5 cm may be accepted depending on the office 8
Many countries in Europe| 35 x 45 mm 39
Hong Kong travel document| 40 x 50 mm 10

In simple terms

If someone says “passport size photo,” they usually mean a small, official- looking headshot formatted to the exact dimensions and rules required by that country’s passport office.

If you want, I can also give you the passport photo size for your country or a ready-to-use checklist.