Architectural (Arch) sizes
Arch A paper size
Arch A measures 228.6 x 304.8 mm (9 x 12 in). Architectural drawings and blueprints.
228.6 x 304.8millimetres
9 x 12inches
2,700 x 3,600pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 228.6 x 304.8 mm |
| Centimetres | 22.86 x 30.48 cm |
| Inches (decimal) | 9 x 12 in |
| Inches (fraction) | 9 x 12 in |
| Points (1/72 in) | 648 x 864 pt |
| Picas | 54 x 72 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 648 x 864 px | 0.6 MP |
| 96 dpi | 864 x 1,152 px | 1 MP |
| 150 dpi | 1,350 x 1,800 px | 2.4 MP |
| 200 dpi | 1,800 x 2,400 px | 4.3 MP |
| 300 dpi | 2,700 x 3,600 px | 9.7 MP |
| 600 dpi | 5,400 x 7,200 px | 38.9 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) | 234.6 x 310.8 mm | 9.236 x 12.236 in |
| 0.125 in bleed (each side) | 235 x 311.2 mm | 9.25 x 12.25 in |
How many Arch A fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A3 | 1-up | 1-up |
| SRA3 | 1-up | 1-up |
| Tabloid 11 x 17 in | 1-up | 1-up |
| 12 x 18 in | 2-up | 1-up |
| 13 x 19 in (Super B) | 2-up | 2-up |
| B2 (offset) | 4-up | 4-up |
| B1 (offset) | 9-up | 9-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for Arch A
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 228.6 x 304.8 mm | 10 x 13 catalog envelope |
| Folded in thirds | 101.6 x 228.6 mm | #10 envelope, #11 envelope, #12 envelope |
Similar sizes
Frequently asked questions
What are the dimensions of Arch A?
Arch A is 228.6 x 304.8 mm, which is 9 x 12 in (9 x 12 in).
How many pixels is Arch A at 300 DPI?
2,700 x 3,600 pixels at 300 dpi, or 1,350 x 1,800 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.