A4 Print Size in Inches, mm & cm — Complete Guide
A4 is the world's most common paper size. Here's everything you need to know about A4 dimensions and how many photos fit on one sheet.
210 × 297
millimeters
21 × 29.7
centimeters
8.27 × 11.69
inches
2480 × 3508
pixels at 300 DPI
What is A4 Size?
A4 is the international standard paper size defined by ISO 216. It measures 210 × 297 millimeters (21 × 29.7 cm or 8.27 × 11.69 inches). A4 is used in most countries except North America, where Letter size (8.5 × 11 inches) is standard.
A4 vs Letter Size
A4 is slightly narrower but taller than US Letter. A4 is 210mm wide while Letter is 216mm (8.5 inches). However, A4 is 297mm tall compared to Letter's 279mm (11 inches). You cannot print A4 on Letter paper without scaling.
How Many Photos Fit on A4?
The number of photos depends on the photo size and your spacing/margin settings. With default 4mm spacing and 8mm margins:
- Passport photos (35×45mm): Up to 28 copies
- 2×2 inch US visa (51×51mm): Up to 15 copies
- 4×6 inch (4R): 2 copies
- 5×7 inch (5R): 2 copies (rotated)
- 8×10 inch (8R): Does not fit on A4
Print A4 at Home
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