Passport Photo Size Guide: mm, cm, Inches & Pixels
Every official passport photo dimension, converted and explained. 35x45mm and 2x2 inch in pixels, centimeters and inches, per-country requirements, face framing rules, and print sizes, all in one place.
Quick answers
35 × 45 mm passport photo: all conversions
The 35x45mm rectangle is the ICAO biometric standard used by India, Pakistan, the UK, and Schengen countries. If your printer or editor asks for pixels instead of millimeters, use the conversions below. For online uploads, portals often specify their own pixel size, for example Passport Seva wants exactly 630x810 px.
| Unit | Value |
|---|---|
| Millimeters | 35 × 45 mm |
| Centimeters | 3.5 × 4.5 cm |
| Inches | 1.38 × 1.77 in |
| Pixels at 300 DPI | 413 × 531 px |
| Pixels at 600 DPI | 827 × 1063 px |
| Aspect ratio | 7:9 |
2 × 2 inch passport photo: all conversions
The 2x2 inch square is the US standard for passports and visas. It is not interchangeable with 35x45mm: submitting the wrong shape is one of the most common reasons applications get rejected, even when the photo itself looks fine.
| Unit | Value |
|---|---|
| Inches | 2 × 2 in |
| Millimeters | 51 × 51 mm |
| Centimeters | 5.08 × 5.08 cm |
| Pixels at 300 DPI | 600 × 600 px |
| Pixels at 600 DPI | 1200 × 1200 px |
| Aspect ratio | 1:1 (square) |
Passport photo size in pixels
Pixel size depends on DPI (dots per inch). At the standard 300 DPI used for printing, a 35x45mm passport photo is 413x531 pixels, and a 2x2 inch US photo is 600x600 pixels. For online uploads, ignore DPI and use the portal number: 630x810 px for India Passport Seva, at least 350x467 px for Pakistan NADRA, and 600x600 px minimum for the US. SnapID digital downloads render at 630x810 px for 35x45mm presets, which is sharper than the 300 DPI minimum.
| DPI | 35 × 45 mm | 2 × 2 in |
|---|---|---|
| 72 | 99 × 128 px | 144 × 144 px |
| 96 | 132 × 170 px | 192 × 192 px |
| 150 | 207 × 266 px | 300 × 300 px |
| 300 | 413 × 531 px | 600 × 600 px |
| 600 | 827 × 1063 px | 1200 × 1200 px |
Formula: pixels = millimeters x DPI / 25.4. So 35mm at 300 DPI = 35 x 300 / 25.4 = 413 pixels.
Passport photo aspect ratio: 7:9 and 1:1
The aspect ratio is the shape of the photo, written as width:height. The 35x45mm passport photo has a 7:9 portrait ratio, while the 2x2 inch US photo is a perfect 1:1 square. When you convert a photo to passport size, matching this ratio is what keeps faces from looking stretched or squeezed.
| Document | Aspect ratio | Photo size |
|---|---|---|
| 35 × 45 mm | 7:9 | Portrait rectangle for India, Pakistan, UK, Schengen |
| 2 × 2 in | 1:1 | Perfect square for USA passport and visa |
| 25 × 35 mm | 5:7 | Portrait rectangle for stamp size photos |
SnapID locks the crop box to the correct ratio for every preset, so the 7:9 or 1:1 shape is always exact. If you crop manually in another editor, set a custom 7:9 ratio for 35x45mm photos and 1:1 for US visa photos.
Passport photo size by country
Always match the document you are applying for, not the country you live in. An Indian passport and an Indian OCI card need different photos.
| Document | Photo size | Background | Notes |
|---|---|---|---|
| India Passport (Passport Seva) | 35 × 45 mm | Pure white | 630x810 px JPEG, 10-250KB for online upload |
| India OCI Card | 35 × 35 mm | Light blue | Square format; white is not accepted |
| Pakistan Passport (NADRA / DGIP) | 35 × 45 mm | Pure white | 600 DPI; head 32-36mm; under 350KB for portal |
| Pakistan CNIC / NICOP | 35 × 45 mm | Blue | Blue background is mandatory |
| USA Passport / Visa | 2 × 2 in | Pure white | 600x600 px minimum digital |
| UK / Schengen Visa | 35 × 45 mm | Pure white | ICAO compliant, no shadows |
Face framing rules (why photos get rejected)
- Face height (chin to crown) must be 70 to 80 percent of the photo height.
- For 35x45mm that means a head height of 32 to 36mm.
- Leave about 3.5mm of space between the top of the hair and the top edge.
- Face the camera directly, both eyes open, neutral expression, mouth closed.
- No glasses, no hats, no hair across the eyes. Religious head coverings are allowed with the full face visible.
Digital upload requirements by portal
Online forms reject photos that are too big, too small, or in the wrong format more often than any framing mistake. Match these numbers exactly.
| Portal | Dimensions | File size |
|---|---|---|
| Passport Seva (India) | 630 × 810 px | 10KB – 250KB JPEG |
| NADRA / DGIP (Pakistan) | 350 × 467 px min | under 350KB JPEG |
| US Visa / Passport | 600 × 600 px min | JPEG |
Required background colors
| Document | Background |
|---|---|
| Most passports & visas (India, Pakistan, USA, UK, Schengen) | Pure white |
| Pakistan CNIC / NICOP | Blue |
| India OCI card | Light blue |
Printing: how many fit on a 4×6 sheet
A standard 4x6 inch photo print is the cheapest way to get physical copies. Cut along the guides after printing.
| Photo size | Photos per 4×6 sheet |
|---|---|
| 35 × 45 mm | 6 copies |
| 2 × 2 in | 4 copies |
Print at 100 percent scale with "fit to page" turned off, on matte or semi-matte photo paper. Measure the first print with a ruler before cutting.
Photo size FAQs
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