Passport Photo Head Size Rules (2026): Chin-to-Crown Examples, Country Ranges, and Composition Checks
Compare passport photo head-size rules, chin-to-crown ranges, and composition patterns for U.S., UK, Canada, Australia, and other biometric workflows before you crop or print.
Why head size matters as much as photo size
Many people correctly learn the outer frame size first, then assume the job is done. In practice, passport photo size and head size inside that frame are separate checks. A 35x45 or 2x2 photo can still fail if the face is too small, too large, or vertically positioned outside the published range.
That is why authorities publish head-size or composition rules in several different ways: some give an exact chin-to-crown measurement in millimetres, some define the acceptable face zone as a percentage of the image height, and some rely on a biometric crop template or online validator. This page compares those rule styles so users do not confuse “correct outer size” with “accepted composition.”
Use this guide together with the passport photo size comparison, the mm to pixels calculator, and the relevant country page. The size page answers which format you need. This page answers how large the face should sit inside that format.
How authorities express head-size rules
| Rule pattern | How it is published | Examples | Best next page |
|---|---|---|---|
| Exact mm chin-to-crown range | The authority gives a minimum and maximum head or face height inside the printed frame. | UK, Canada, Australia | UK / Canada / Australia |
| Percentage-based digital composition | The authority expresses head height or eye line as a percentage of the full digital image. | U.S. visa composition template | U.S. passport guide |
| Biometric framing with portal or booth validation | The route may rely on a biometric template or upload validator rather than a simple public mm rule. | Many 35x45 biometric and e-photo workflows | Biometric photo requirements |
Those different publication styles are why users often get inconsistent advice online. One market talks about a 29–34 mm head zone, another talks about 50–69% of image height, and another simply tells users to follow the official template. They are all trying to control the same outcome: a face that fills the right amount of the frame without looking cropped or distant.
Representative official head-size examples
| Workflow | Photo size | Published head-size rule | Why it matters | Best next page |
|---|---|---|---|---|
| U.S. passport and U.S. visa | 2 × 2 in / 50.8 × 50.8 mm | Head height about 1 in to 1 3/8 in (about 25–35 mm); visa template also uses digital composition percentages | A square 2x2 print can still fail if the head is too small, too large, or the eyes sit outside the digital composition band. | U.S. passport guide |
| UK passport | 35 × 45 mm | Head should measure 29–34 mm from chin to crown in the printed photo | The UK uses a 35x45 frame, but the face cannot simply be centred by eye; crown-to-chin size still matters. | UK passport guide |
| Canada passport | 50 × 70 mm | Face height should be 31–36 mm from chin to natural top of head | Canada uses a larger print format than most markets, so print size and face height both have to be checked together. | Canada passport guide |
| Australia passport | 35–40 mm wide × 45–50 mm high | Chin to crown should be 32–36 mm | Australia allows a small physical-size band, but the face still has to stay inside the published chin-to-crown range. | Australia passport guide |
The U.S. workflow is a good example of why outer size alone is not enough. A square 2x2 inch photo can still fail if the head does not occupy roughly the right proportion of the image. Canada shows the opposite problem: the print frame is larger than a standard 35x45 format, but the face still has a strict 31–36 mm target.
If your document route does not publish a simple millimetre band, do not guess. Use the country guide and, if needed, the official composition template or portal checker. That is safer than copying a “biometric” crop from a different country that happens to use a similar outer frame.
Practical checks before export or print
- Start with the correct outer format first, then check whether the face sits inside the correct chin-to-crown or composition zone.
- Do not assume two countries that both use 35x45 mm share the same head-size interpretation.
- If the authority uses digital composition percentages, compare the preview against the official template rather than eyeballing the crop.
- If you print at home, keep the print scale at 100% / actual size; scaling errors can change the effective face-height measurement.
- For online submission, check file size, format, and portal-specific validators after the crop is correct.
This is also why the best companion pages for this guide are the DPI and pixels hub, the print layouts hub, and the digital upload guide. They solve the next failure mode after composition: export and submission.