ID & Passport Photo Size Guide
Last updated: 2026-06-25
The most common passport photo is 35mm x 45mm, while US passport/visa photos are 51mm x 51mm (2x2 in). Pixel size = mm / 25.4 x DPI, and 300 DPI is recommended for printing.
Pick a use and DPI below to see the mm size and print pixels together. (For reference.)
Look up a size
Size
0 × 0 mm
| Item | Value |
|---|---|
| Width (mm) | |
| Height (mm) | |
| Width (px, selected DPI) | |
| Height (px, selected DPI) | |
| Width (px, 300 DPI) | |
| Height (px, 300 DPI) |
The sizes shown are commonly used reference values. For official submissions such as passports, verify the latest requirements with the relevant authority, e.g. the U.S. Department of State passport photo guidance.
How to use
- Choose a use — select the photo use you need, such as passport, ID, or business size.
- Choose print DPI — enter a print resolution (for example, 300 DPI).
- View the size — the mm size and width/height in pixels for that DPI are shown in a table.
ID & passport photo sizes by use case
ID photos use different sizes depending on where you submit them. The 35mm x 45mm passport size is the international standard in many countries, while a 30mm x 40mm ID photo is common for everyday documents. The table below lists commonly used sizes with print pixels at 300 DPI.
| Use | mm (W×H) | cm | px (300 DPI) |
|---|---|---|---|
| Passport photo | 35 × 45 | 3.5 × 4.5 | 413 × 531 |
| ID photo | 30 × 40 | 3.0 × 4.0 | 354 × 472 |
| Business size | 50 × 70 | 5.0 × 7.0 | 591 × 827 |
| National ID card | 35 × 45 | 3.5 × 4.5 | 413 × 531 |
| Driver's license | 35 × 45 | 3.5 × 4.5 | 413 × 531 |
| Resume photo | 30 × 40 | 3.0 × 4.0 | 354 × 472 |
| US visa / passport | 51 × 51 | 5.1 × 5.1 | 602 × 602 |
The pixel formula is pixels = mm / 25.4 x DPI (1 inch = 25.4mm). For the same size, a higher DPI means more pixels and better print quality. For printing rather than screen display, 300 DPI or higher is recommended. For more detail, see the complete ID photo size guide.
Frequently asked questions (FAQ)
What are the standard ID photo sizes?
Common ID photo sizes include 35mm x 45mm (the international passport standard used in many countries), 50mm x 70mm for larger business prints, and 51mm x 51mm (2x2 inches) for US passport and visa photos. Requirements vary by issuer, so always check the official guidance.
What is the standard passport photo size?
Many countries use a 35mm x 45mm passport photo with a head height (crown to chin) of roughly 32-36mm on a plain white background. US passport and visa photos are different at 51mm x 51mm (2x2 inches).
How do I convert mm to print pixels?
Pixels = mm / 25.4 x DPI. For example, 35mm printed at 300 DPI is 35 / 25.4 x 300 = about 413 pixels. For good print quality, 300 DPI or higher is recommended.
What background color should an ID photo have?
Passport and most official ID photos require a plain white or off-white background. Some company or school submissions allow light blue or gray, so follow the issuer's guidance. Shadows, patterns, and borders are not allowed.
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Last updated: 2026-06-25