Print files & sizing

Standard Frame & Print Sizes Chart (US + International)

One table with everything: frame size, its aspect ratio, and the pixel dimensions it needs at 300 DPI. Bookmark it before you build a listing.

Updated

Key takeaways
  • Every standard frame size mapped to its aspect ratio and the exact pixels it needs at 300 DPI — the reference chart to bookmark.
  • 4800×6000 pixels.
  • US: 4×6, 5×7, 8×10, 11×14, 12×16, 16×20, 18×24, 24×36.
  • 2480×3508 pixels.

Most size charts skip the one column sellers actually need — the pixels. Here's the complete reference.

US sizes

Size (in)RatioPixels @ 300 DPI
4×62:31200×1800
5×75:71500×2100
8×104:52400×3000
8×122:32400×3600
11×1411:143300×4200
12×163:43600×4800
12×182:33600×5400
16×204:54800×6000
18×243:45400×7200
24×362:37200×10800

International (ISO A)

SizeMillimetresPixels @ 300 DPI
A5148×2101748×2480
A4210×2972480×3508
A3297×4203508×4961
A2420×5944961×7016
A1594×8417016×9933

How to use it

Two rules turn this into listings:

  • List only sizes your file supports. If your master is 4800×6000, you can hit 16×20 at 300 DPI but not 24×36. Don't promise sizes you can't deliver sharply.
  • Group by ratio. All the 2:3 sizes come from one 2:3 file; all the 4:5 sizes from one 4:5 file. Sell master files by ratio, not individual sizes.

Build every size from one image

The free Ratio-Pack Generator reads your pixel count, crops a master for each ratio, tags it 300 DPI, and tells you the largest size each one prints cleanly — so your size list matches this chart automatically.

Ratio-Pack Generator

Turn one image into every print ratio buyers ask for — 300 DPI, cropped in your browser. Free, instant, nothing uploads.

Open the tool →
Questions

How big is each size, really?

The chart above gives ratios and pixels. This one answers the question people actually ask: is it big?

Size (in)CentimetresRatioPixels @ 300 DPIHow big is it?
4×610.2 × 15.2 cm2:31200×1800Small. This is the standard photo-lab print — the one that fits a postcard slot or a small desk frame.
5×512.7 × 12.7 cm1:11500×1500Small and square, roughly the footprint of a CD case. Popular for Instagram-style prints.
5×712.7 × 17.8 cm5:71500×2100Small. About the size of a greeting card, and the usual step up from 4×6.
8×1020.3 × 25.4 cm4:52400×3000Medium, and the most common framed size there is. Slightly narrower and shorter than A4.
11×1427.9 × 35.6 cm11:143300×4200Medium-large. A clear step up from 8×10 and the usual size for a framed piece over a desk.
12×1630.5 × 40.6 cm3:43600×4800Medium-large wall art. Reads as deliberate rather than incidental on a wall.
12×1830.5 × 45.7 cm2:33600×5400Medium-large, and the 2:3 ratio matches most camera photos without cropping.
16×2040.6 × 50.8 cm4:54800×6000Large. Big enough to anchor a wall on its own without a gallery arrangement.
16×2440.6 × 61.0 cm2:34800×7200Large, in the 2:3 photo ratio. Taller than 16×20 at the same width.
18×2445.7 × 61.0 cm3:45400×7200Large. The standard art-print poster size in most shops.
20×3050.8 × 76.2 cm2:36000×9000Very large statement print. Needs a wall cleared for it.
24×3661.0 × 91.4 cm2:37200×10800Very large — the standard big poster. At 91 cm tall it is about the height of a kitchen counter.

Quick answers.

How big is 24×36?

24×36 inches is 61 × 91.4 cm — the standard large poster, about the height of a kitchen counter. It needs 7200 × 10800 pixels at 300 DPI.

How big is 4×6?

4×6 inches is 10.2 × 15.2 cm. It is the standard photo print size, 2:3 ratio, and needs 1200 × 1800 pixels at 300 DPI.

Is 16×20 big?

Yes, 16×20 inches counts as large — 40.6 × 50.8 cm, big enough to anchor a wall on its own. It needs 4800 × 6000 pixels at 300 DPI.

Is 5×5 big?

No. 5×5 inches is 12.7 × 12.7 cm, a small square print roughly the footprint of a CD case. It needs 1500 × 1500 pixels at 300 DPI.

Is 5×7 big?

5×7 inches is small — 12.7 × 17.8 cm, about the size of a greeting card. It is the usual step up from 4×6 and still reads as a desk or shelf print rather than wall art.

Is 4×6 big?

No, 4×6 inches is small — 10.2 × 15.2 cm, the standard photo-lab print. It suits a desk frame or a postcard, not a wall. It needs 1200 × 1800 pixels at 300 DPI.

Is 24×36 big?

Yes. 24×36 inches is 61 × 91.4 cm, the standard large poster — roughly as tall as a kitchen counter. It is the biggest size most home printers and Etsy sellers offer, and it needs 7200 × 10800 pixels at 300 DPI.

Is 8×10 big?

8×10 inches is 20.3 × 25.4 cm — medium, and the most common framed print size there is. It is slightly narrower and shorter than A4, big enough for a desk or shelf but small on a large wall. You need 2400 × 3000 pixels to print it at 300 DPI.

What pixel size is a 24×36 poster?

7200×10800 pixels at 300 DPI. The rule is inches × 300: 24 × 300 = 7200 and 36 × 300 = 10800. 24×36 is a standard US frame size, so one master file at that ratio covers it.

What pixel size is a 16×20 at 300 DPI?

4800×6000 pixels. The rule is inches × 300: 16×300 = 4800 and 20×300 = 6000.

What are the standard printable frame sizes?

US: 4×6, 5×7, 8×10, 11×14, 12×16, 16×20, 18×24, 24×36. International: A5, A4, A3, A2, A1. Grouping them by aspect ratio lets a few master files cover them all.

How many pixels for an A4 print at 300 DPI?

2480×3508 pixels. A4 is 210×297 mm, which at 300 DPI works out to those dimensions.

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