ISO A series
A5 paper size
A5 measures 148 x 210 mm (5.83 x 8.27 in). Notebooks, diaries, flyers, booklets and paperback books.
148 x 210millimetres
5.83 x 8.27inches
1,748 x 2,480pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 148 x 210 mm |
| Centimetres | 14.8 x 21 cm |
| Inches (decimal) | 5.827 x 8.268 in |
| Inches (fraction) | 5 13/16 x 8 1/4 in |
| Points (1/72 in) | 419.5 x 595.3 pt |
| Picas | 34.96 x 49.61 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 420 x 595 px | 0.2 MP |
| 96 dpi | 559 x 794 px | 0.4 MP |
| 150 dpi | 874 x 1,240 px | 1.1 MP |
| 200 dpi | 1,165 x 1,654 px | 1.9 MP |
| 300 dpi | 1,748 x 2,480 px | 4.3 MP |
| 600 dpi | 3,496 x 4,961 px | 17.3 MP |
300 dpi is the usual target for printed photos and artwork; 72–96 dpi is screen resolution.
Document size with bleed
| Bleed | Millimetres | Inches |
|---|---|---|
| 3 mm bleed (each side) | 154 x 216 mm | 6.063 x 8.504 in |
| 0.125 in bleed (each side) | 154.4 x 216.4 mm | 6.077 x 8.518 in |
How many A5 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 2-up | 1-up |
| A3 | 4-up | 2-up |
| SRA3 | 4-up | 4-up |
| Letter | 1-up | 1-up |
| Tabloid 11 x 17 in | 2-up | 2-up |
| 12 x 18 in | 4-up | 2-up |
| 13 x 19 in (Super B) | 4-up | 4-up |
| B2 (offset) | 9-up | 9-up |
| B1 (offset) | 18-up | 18-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for A5
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 148 x 210 mm | 6 x 9 booklet envelope, C5 envelope, Invite envelope |
| Folded in half | 105 x 148 mm | C6 envelope, A6 envelope, DL envelope |
| Folded in thirds | 70 x 148 mm | C7/C6 envelope, #6¾ envelope, C6 envelope |
The √2 system
A5 has an aspect ratio of 1 : 1.4189 — close to √2 (1.4142). Folding or cutting it in half across the long side produces the next smaller size in the series with the same proportions, and two sheets side by side form the next larger size. This is why scaling between sizes in the series (for example on a photocopier) never crops or distorts the page.
Similar sizes
#11 envelope
114.3 x 263.5 mmUS envelopes
Half Letter
139.7 x 215.9 mmUS sizes
Digest magazine
139.7 x 215.9 mmMagazines
Index card 6 × 8
152 x 203 mmCards
A9 envelope
146.1 x 222.3 mmUS envelopes
#12 envelope
120.7 x 279.4 mmUS envelopes
F5
165 x 210 mmMetric series
6 x 9 booklet envelope
152.4 x 228.6 mmUS envelopes
Frequently asked questions
What are the dimensions of A5?
A5 is 148 x 210 mm, which is 5.83 x 8.27 in (5 13/16 x 8 1/4 in).
How many pixels is A5 at 300 DPI?
1,748 x 2,480 pixels at 300 dpi, or 874 x 1,240 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.