Half Letter compared with A5
A5 vs Half Letter
A5 measures 148 × 210 mm (5.83 × 8.27 in); Half Letter measures 139.7 × 215.9 mm (5.5 × 8.5 in).A5 is 8.3 mm wider. Half Letter is 5.9 mm taller.
Try a comparison
AFirst paper
148 × 210 mm
BCompare with
139.7 × 215.9 mm
All measurements update together.
At a glance
Both sheets shown at the same scale
A5PortraitHalf LetterPortrait
Proportional preview · not actual print size
Half Letter minus A5
Scale A5 to fit inside Half Letter
The details, side by side
A5 and Half Letter: dimensions in the selected orientation.
| Measurement | AA5 | BHalf Letter |
|---|---|---|
| Width | 148 mm | 139.7 mm |
| Height | 210 mm | 215.9 mm |
| Area | 31080 mm² | 30161.23 mm² |
| Aspect ratio (width : height) | 1 : 1.42 | 1 : 1.55 |
Print scale uses the orientations shown above and excludes printer margins and bleed. Rotate a sheet to explore a different fit.
Area difference
Half Letter has 2.96% less area than A5, using A5 as the baseline.
Print scaling
A5 onto Half Letter: 94%. Half Letter onto A5: 97%. 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
A5: 1.42:1; Half Letter: 1.55:1 (long edge to short edge, rounded to two decimal places).
Which should you use?
Choose A5 when your document or recipient specifies that ISO format; choose Half Letter for a workflow that requires that US format. Match the document, driver and loaded sheet rather than treating the two names as interchangeable.
A5 vs Half Letter FAQ
What is the size difference between A5 and Half Letter?
A5 measures 148 × 210 mm (5.83 × 8.27 in); Half Letter measures 139.7 × 215.9 mm (5.5 × 8.5 in). A5 is 8.3 mm wider. Half Letter is 5.9 mm taller.
How does Half Letter compare with A5 in area?
Half Letter has 2.96% less area than A5, using A5 as the baseline.
What scale prints A5 on Half Letter, and vice versa?
A5 onto Half Letter: 94%. Half Letter onto A5: 97%. These portrait-to-portrait scales exclude printer margins and bleed.
Do A5 and Half Letter have the same aspect ratio?
A5: 1.42:1; Half Letter: 1.55:1 (long edge to short edge, rounded to two decimal places). Their proportions differ, so fitting one onto the other leaves unused space unless content is cropped.