Why millimetres beat “looks about right”
Consulates and passport offices measure prints. An almost-correct crop that drifts by a millimetre can still fail. Passprint presets encode outer size so staff are not estimating with free-transform handles.
Photo dimensions hub
Passport photo size guides — 35×45, 2×2, and 50×70 mm
Millimetre and inch requirements are the top reason photos get rejected. These guides explain exact dimensions, pixel counts at 300 DPI, and which countries use each format.
35×45 mm2×2 in / 51 mm50×70 mm Canada
Size standards
Three sizes dominate studio passport work 35×45 mm, 2×2 inches, and Canada’s 50×70 mm
Most countries outside the Americas use 35×45 mm. The United States standardised on 2×2 inch squares. Canada requires 50×70 mm with IRCC head-height rules. This hub is the navigational map for millimetres and inches — not a substitute for country narrative pages. Open a child size guide for annotated diagrams and pixel math, then jump to India, US, UK, or Canada when you need authority-specific rules. Passprint automates the entire workflow from upload to print-ready sheet in just a few clicks.
Studio challenge
35×45 mm — international standard
Used by India, the UK, Schengen states, and dozens of Asian and Middle Eastern countries for passport and many visa packs.
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Studio challenge
2×2 in — US square format
51×51 mm with strict head-height percentage for US passports and visas — never stretch a rectangle into this square.
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Studio challenge
50×70 mm — Canada
Taller Canadian format with 31–36 mm face height — see the 50×70 mm size guide for IRCC-aligned crops.
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Size comparison
35×45 vs 2×2 vs 50×70 — pick a child guide
Compare outer size, aspect ratio, approximate 300 DPI pixels, and typical markets, then open the detailed size page you need.
Passport photo size matrix
| Spec | 35×45 mm | 2×2 in (US) | 50×70 mm (Canada) |
|---|---|---|---|
| Millimetres | 35×45 | 51×51 | 50×70 |
| Aspect | 7:9 portrait | 1:1 square | 5:7 portrait |
| ~300 DPI pixels | 413×531 | 600×600 | 591×827 |
| Face-height focus | ~70–80% / local bands | 1–1⅜ in chin–crown | 31–36 mm chin–crown |
| Open size guide | 35×45 mm guide | 2×2 in guide | 50×70 mm guide |
Using size guides in studio workflows
35×45 mm depth page
Open the 35×45 guide for annotated diagrams, country lists, and pixel notes. Pair it with India, UK, or Schengen pages when the application channel matters as much as the rectangle.
2×2 inch depth page
The 2×2 guide explains square framing and US head-size inches. Use it for US passport and US visa work; do not convert from 35×45 by stretching.
50×70 mm depth page
Canada’s taller format needs both correct outer size and the 31–36 mm face band. The 50×70 guide and Canada country page should be read together for IRCC jobs.
Pixels at 300 DPI
Studios printing on photo paper should think in 300 DPI. Digital portals may ask for different pixel caps — export sharp from Passprint, then downscale only when a form demands it.
Size hub vs country hub vs how-to
This hub answers “which millimetres?”. The country hub answers “which authority?”. How-to pages answer “how do I shoot or crop?”. Keep those intents separate when you link clients or train staff.
ICAO and face height
ICAO Doc 9303 describes face occupancy as a percentage of image height. Countries may publish millimetre bands on top. See the ICAO hub when you need the international baseline.
Create a sized passport photo
Start with a standard 35×45 preset, or switch to 2×2 / 50×70 after upload.
Try Passprint freeSize hub FAQ
Which passport photo size do I need?
Match the destination form’s published dimensions. When unsure, open the child size guide and the matching country page.
Official references
Passprint uses AI-assisted processing for background replacement, face framing, and sizing. Final acceptance is decided by the issuing authority — always verify against the official references on this page and inspect your printed sheet before submission.
Last reviewed: July 31, 2026
Size guides for studios. 35×45, 2×2, and 50×70 mm.
Understand dimensions, then create compliant photos with Passprint.