8 × 8 frame size
An 8×8 frame is a square nominal format. An 8×8 outer mat can instead contain a smaller picture; verify which rectangle the listing names.
Artwork is the full sheet. Nominal frame size is the stated insert reference. The visible opening is the area left after the frame lip or mat covers the edges. Actual frames, mats, rabbets and listed openings vary by manufacturer; these dimensions do not guarantee fit, preservation, hanging safety, load capacity or compatibility.
8 × 8 inches in cm, mm and both orientations
| Measurement | Portrait / listed order | Landscape / reversed order |
|---|---|---|
| Inches | 8 × 8 | 8 × 8 |
| Centimeters | 20.32 × 20.32 | 20.32 × 20.32 |
| Millimeters | 203.2 × 203.2 | 203.2 × 203.2 |
| Aspect ratio | 1:1 | 1:1 |
This is a square, so reversing width and height leaves a 1:1 ratio. Product features determine which orientations a particular frame supports. A matching ratio preserves shape when scaling an image; it does not make different physical sheet sizes interchangeable.
Without a mat: start with the full 8 × 8 sheet
Compare a frame described for a 8 × 8-inch insert. Measure any printed paper margin as part of that sheet. Do not subtract the front lip from the artwork dimensions unless the supplier explicitly asks for a visible-window measurement. The back opening, depth and clearance must come from the specific product; no universal rabbet allowance is assumed here.
A rectangular photo inside a square frame
A full 5×7 sheet is nominally smaller than an 8×8 board. With the sample overlap, a 4.75×6.75 window leaves 1.625-inch side borders but only 0.625 inch at the top and bottom. The result is intentionally uneven. Compare it with a 5×5 square picture, whose centered borders are equal.
Cropping a rectangular image to an 8×8 print
An 8×10 image scaled to fill an 8×8 print loses 2 inches of its height in total. Fitting the whole image to a square instead leaves space on two sides. Choose between these at the image-printing stage; the mat surrounds the resulting physical print and cannot restore cropped content.
Square artwork still has a top edge
Although width and height are equal, a face, horizon or signature gives the artwork an intended orientation. The nominal square dimensions do not describe any stand, hanging arrangement or product orientation features.
With a mat around a full 8 × 8 print
These centered examples use ⅛ inch overlap on each artwork edge, producing a 7.75 × 7.75-inch window. This is an editable illustration, not a prescribed cut. Board sizes are comparison scenarios, including possible custom dimensions; stock availability is not asserted.
| Outer board / nominal frame (in) | Window (in) | Left / right border (in) | Top / bottom border (in) |
|---|---|---|---|
| 12 × 12 | 7.75 × 7.75 | 2.125 | 2.125 |
| 16 × 16 | 7.75 × 7.75 | 4.125 | 4.125 |
Window = artwork − 2 × overlap
Centered border = (outer board − window) ÷ 2
Open this 12 × 12 mat example in the calculator to change the board or overlap. Some suppliers take artwork dimensions and make their own deduction; others want the final window size.
Smaller artwork inside a 8 × 8 outer board
This reverses the question: keep the nominal frame at 8 × 8, then compare smaller pictures. It is useful when a listing says “matted to” a smaller photo size. These are calculated scenarios, not a claim about an included mat.
| Full artwork (in) | Window (in) | Left / right border (in) | Top / bottom border (in) |
|---|---|---|---|
| 5 × 5 | 4.75 × 4.75 | 1.625 | 1.625 |
| 5 × 7 | 4.75 × 6.75 | 1.625 | 0.625 |
Before comparing a frame listing
- Confirm the full sheet and the portion of the image that must remain visible.
- Identify the nominal insert, outer mat board and exact cut window separately.
- Request the actual back opening, rabbet depth and manufacturer tolerances. Width and height alone cannot establish suitability for thick artwork.
- Use the listed outside dimensions for a visual gallery layout; these tables do not provide them.
Questions about 8 × 8 frames
Does an 8×8 print need an 8×8 mat board?
An unmatted frame comparison begins at 8×8. To add a visible mat border, use a larger outer board, such as the 12×12 example below, with a smaller window.
Is an 8×8 frame the same as 20×20 cm?
8×8 inches is 20.32×20.32 cm. A 20×20 cm nominal opening is smaller, even though the labels are close.
Compare related frame sizes
Return to the frame-size directory · Work backward from a frame you already own · Understand mat terminology