Passport photos typically use a square 1:1 aspect ratio, meaning the width equals the height. This ensures uniformity for official documents worldwide, with the most common standard being 2x2 inches (51x51 mm) for U.S. passports.

Standard US Ratio

The ratio for U.S. passport photos is precisely 1:1 (square) , as specified by the Department of State. Photos must measure exactly 2x2 inches (51x51 mm) when printed, or 600x600 pixels for digital submissions at 300 DPI or higher. Your head should occupy 1 to 1⅜ inches (25-35 mm) from chin to crown, keeping the image balanced.

Global Variations

While the U.S. sticks to square, other countries differ:

  • India : 2:3 ratio (35x45 mm, like 4.5x3.5 cm).
  • EU/Schengen : Often 3:4 (35x45 mm).
  • UK : 35x45 mm (roughly 7:9).

Country/Region| Dimensions (mm)| Ratio
---|---|---
USA| 51x51| 1:1 1
India| 35x45| 7:9 4
EU Standard| 35x45| 3:4 7
Canada| 50x70| 5:7 6

Always verify with your government's latest guidelines, as specs evolve—U.S. rules remain unchanged into 2026.

Quick Tips

  • Crop precisely : Use apps or services to hit the ratio exactly, avoiding rejection.
  • Head sizing : Eyes 1⅛-1⅜ inches from bottom edge.
  • Print quality : Matte paper, recent photo (within 6 months).

TL;DR : Core ratio is 1:1 square for U.S. (2x2 inches); check country- specific for travel.

Information gathered from public forums or data available on the internet and portrayed here.