Standard Frame Sizes Chart

Print sizes, the mats and frames they pair with, and the measurements that matter when you plan the wall before the frame arrives.

Reference chart

Plan the wall before the frame shows up

Frame shopping and wall planning use different numbers. The print is one size, the mat opening is another, the advertised frame size matches the print, and the outer edge of the moulding, the only dimension the wall cares about, is bigger than all of them. This page maps the standard sizes to each other so you can lay out a wall with the calculator before anything arrives in a box.

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Written by Joshua Shepelsky

Role Developer

Last reviewed

Scope Frame, mat, and print size standards plus weight estimates

Standard print, mat, and frame pairings

These are the pairings sold everywhere in the US market. The pattern: each print size mats up into the next frame size, with 1.5 to 3 inches of mat showing per side.

Advertised frame size matches the unmatted print it fits. Outer moulding adds roughly 1 to 3 inches to each dimension.
Print size Typical matted frame Mat border showing Common use
4 × 6 8 × 10 ~2 in Snapshots, desk and shelf frames
5 × 7 8 × 10 or 11 × 14 1.5–3 in Portraits, small gallery wall fillers
8 × 10 11 × 14 ~1.5–2 in The standard gallery wall workhorse
11 × 14 16 × 20 ~2.5 in Medium prints, pairs above furniture
16 × 20 20 × 24 or 22 × 28 2–3 in Statement prints, above consoles
18 × 24 24 × 30 ~3 in Large prints, above sofas in pairs
24 × 36 27 × 40 or 30 × 42 1.5–3 in Posters, single-piece focal walls

The calculator wants the outer edge

Enter the outside dimensions of the moulding in the calculator, not the advertised size. A "16 by 20" frame with a chunky 1.5-inch moulding is really 19 by 23 on the wall, and in a tight gallery wall that 3-inch difference eats an entire gap. Once a frame is in hand, measure the outer edge with a tape. Before it arrives, add the seller's listed moulding width twice to each advertised dimension.

Aspect ratios explain the cropping

Phone and DSLR photos are 3:2 or 4:3. Most standard frames are neither: 8 by 10 is 5:4, and 11 by 14 is 14:11. Printing a 3:2 photo to fit an 8 by 10 mat means losing about a fifth of the long side to cropping. If the composition cannot take the crop, print 8 by 12 instead, which keeps 3:2, and mat it into an 11 by 14 or 12 by 16 frame with an off-standard mat opening.

Typical framed weights

Weight decides the hardware, and glass is most of the weight. These are realistic ranges for wood-moulding frames with regular glass; acrylic glazing cuts the total by a third or more, and stretched canvas without glass weighs a fraction of a framed print the same size.

Estimated hanging weights for framed prints with glass. Weigh the real frame when it matters; see the hardware guide for ratings.
Frame size Framed print with glass Stretched canvas Hardware class
8 × 10 2–3 lb <1 lb Small hook or adhesive strips
11 × 14 3–5 lb 1–2 lb Standard picture hook
16 × 20 5–8 lb 2–3 lb Standard picture hook
24 × 30 10–15 lb 3–5 lb Large hook or anchor, two points
27 × 40 15–25 lb 5–8 lb Anchors or stud, two points
30 × 40+ 20–35 lb 6–10 lb Toggle class or French cleat

Mat width changes spacing, not just looks

A wide mat adds built-in breathing room around the image, so matted frames tolerate tighter gaps in a grouping. Frames with 3-inch mats can sit 2 inches apart and still feel airy, while full-bleed canvases at the same gap look crowded. If you mix matted and unmatted pieces on one wall, open the gaps toward the top of the 2-to-4-inch range so the unmatted pieces get the air the mats already have.

Picking a size for the wall span

Working backward from the wall beats working forward from the print. Measure the span the art should own: two-thirds to three-quarters of the sofa, buffet, or headboard below it, or the open wall section between trim. Then buy the frame, or the group of frames plus gaps, that fills that span. A quick sanity check with the calculator's layout preview shows whether one 27 by 40 or two 18 by 24s better fill the space before you spend anything.

Before you order frames

  • Measure the wall span the art should fill, not the whole wall.
  • Check the print's aspect ratio against the mat opening for crop loss.
  • Add the moulding width twice to get the true outer size.
  • Estimate weight from the chart and match the hardware class.
  • Test the layout in the calculator before purchasing.

Supplies you'll need

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Related guides

Once the sizes are set, the picture hanging height guide turns them into a nail position. The hardware guide matches the weight column above to specific anchors, and the gallery wall spacing guide covers how outer sizes and gaps add up across a full arrangement.