Photo Print.

Print 4 × 6 cm photos (Vietnam passport, Thai visa) from iPhone

By Mohamed Elatabany · Updated 10 October 2026

A 4 × 6 cm photo is 40 × 60 mm, about 1.575 × 2.362 inches — much smaller than a 4 × 6 inch print. Vietnam’s passport rules and Thailand’s visa pages ask for 4 × 6 cm. In Photo Print, enter 40 × 60 mm, crop to fill and print at 100%.

Size is only one requirement.

Check the issuing authority’s current rules for the portrait itself — background, expression, lighting and age of the photo. Photo Print prints the exact size you enter; it does not check a photo against any government’s requirements.

Do not confuse centimetres and inches

“4 × 6” on a photo shop menu almost always means 4 × 6 inches (10 × 15 cm). A passport photo of that size would be rejected. Always enter 40 and 60 with the unit set to millimetres.

What the official guidance says

Vietnam’s passport photo rules (Ministry of Public Security Circular 31/2023) call for 4 × 6 cm on a white background, explained by provincial police such as Thái Nguyên Police. Thailand’s Ministry of Foreign Affairs lists 4 × 6 cm photos for visa applications on its visa page.

Make the sheet

  1. In Photo Print, open Settings and set units to millimetres.
  2. Start a layout and add your portrait from the photo library.
  3. Open the photo and type 40 for width and 60 for height. Enter millimetres exactly; do not round to inches.
  4. Choose Fill so the portrait covers the rectangle, then drag and zoom to position the face.
  5. Add copies, and choose the paper loaded in your printer: 4 × 6 in, A4 or US Letter.
  6. Print with AirPrint, or save a PDF and print it at Actual size / 100%. Measure one photo with a ruler before trimming.

What resolution do I need?

At 300 pixels per inch, aim for at least 473 × 709 pixels after cropping.

How many fit on a 4 × 6 inch sheet?

Four: two 40 mm columns (80 mm) across the 101.6 mm side and two 60 mm rows (120 mm) down the long side, with room for cut lines.

Check scaling with a free printer test sheet

Next steps

Written by Mohamed Elatabany, developer of Photo Print. App instructions are based on Photo Print; printer behaviour varies. Send a correction or ask for help.