A5 compared with A4
A4 vs A5
A4 measures 210 × 297 mm (8.27 × 11.69 in); A5 measures 148 × 210 mm (5.83 × 8.27 in).A4 is 62 mm wider. A4 is 87 mm taller.
Try a comparison
AFirst paper
210 × 297 mm
BCompare with
148 × 210 mm
All measurements update together.
At a glance
Both sheets shown at the same scale
A4PortraitA5Portrait
Proportional preview · not actual print size
A5 minus A4
Scale A4 to fit inside A5
The details, side by side
A4 and A5: dimensions in the selected orientation.
| Measurement | AA4 | BA5 |
|---|---|---|
| Width | 210 mm | 148 mm |
| Height | 297 mm | 210 mm |
| Area | 62370 mm² | 31080 mm² |
| Aspect ratio (width : height) | 1 : 1.41 | 1 : 1.42 |
Print scale uses the orientations shown above and excludes printer margins and bleed. Rotate a sheet to explore a different fit.
Area difference
A5 has 50.17% less area than A4, using A4 as the baseline.
Print scaling
A4 onto A5: 70%. A5 onto A4: 141%. These portrait-to-portrait scales exclude printer margins and bleed.
Enter the percentage in your print dialog's Custom Scale field, select the destination paper size, and check the preview for the printer's unprintable margins.
Aspect ratios
A4: 1.41:1; A5: 1.42:1 (long edge to short edge, rounded to two decimal places).
Which should you use?
Choose A4 when your document template or recipient requests it, and A5 when that format is required. A4 offers more room for layouts and diagrams; the smaller sheet takes less space for compact documents.
A4 vs A5 FAQ
What is the size difference between A4 and A5?
A4 measures 210 × 297 mm (8.27 × 11.69 in); A5 measures 148 × 210 mm (5.83 × 8.27 in). A4 is 62 mm wider. A4 is 87 mm taller.
How does A5 compare with A4 in area?
A5 has 50.17% less area than A4, using A4 as the baseline.
What scale prints A4 on A5, and vice versa?
A4 onto A5: 70%. A5 onto A4: 141%. These portrait-to-portrait scales exclude printer margins and bleed.
Do A4 and A5 have the same aspect ratio?
A4: 1.41:1; A5: 1.42:1 (long edge to short edge, rounded to two decimal places). Their proportions are approximately the same, allowing for whole-millimetre rounding.