UK Passport Photo Head Size (2026): Exact Measurements and Framing Rules

Official UK Passport Photo Head Size

According to HMPO requirements, the distance from your chin to the crown of your head must measure:

• Minimum: 29 millimetres
• Maximum: 34 millimetres

This measurement is taken from the lowest point of your chin to the top of your head (including hair).

What This Means in Practice

In a standard 35mm × 45mm passport photo, your head should:

• Take up approximately 65-75% of the photo height
• Be centred horizontally
• Have a small amount of space above your head
• Show your shoulders at the bottom of the frame

The head should not be touching or nearly touching any edge of the photo.

Why Head Size Matters

Passport photos are used for biometric facial recognition. The systems need:

• Consistent facial feature positioning
• Enough detail to measure eye spacing, nose position, and facial structure
• Standard framing for comparison against existing records

Photos outside the tolerance range cannot be reliably processed by these systems.

Common Head Size Mistakes

Head too small:

• Standing too far from the camera
• Cropping with too much empty space
• Using wide-angle phone camera settings

Head too large:

• Standing too close to the camera
• Cropping too tightly
• Not leaving enough margin for official crop

How to Get Correct Head Size

When taking your photo:

1. Position yourself at arm's length from the camera 2. Have someone else take the photo (avoid selfies) 3. Leave about 10-15cm of space around your head 4. Let a validation tool handle the precise crop

Simple cropping apps don't measure these proportions, which is why manual cropping often fails.

Hairstyles and Head Measurement

Your hair is included in the head measurement. This means:

• Big or voluminous hairstyles may push you over the 34mm limit
• Very flat or short hair gives more margin
• Hair accessories that add height should be removed

The measurement is taken to the top of your hair, not your scalp.