24 × 24 frame size
A nominal 24×24 frame names a 24×24-inch square insert, equal to 60.96×60.96 cm. A 24×24 outer mat may display a smaller picture; a full 24×24 sheet needs a larger board if a surrounding mat is wanted.
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.
24 × 24 inches in cm, mm and both orientations
| Measurement | Portrait / listed order | Landscape / reversed order |
|---|---|---|
| Inches | 24 × 24 | 24 × 24 |
| Centimeters | 60.96 × 60.96 | 60.96 × 60.96 |
| Millimeters | 609.6 × 609.6 | 609.6 × 609.6 |
| 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 24 × 24 sheet
Compare a frame described for a 24 × 24-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.
24 inches and 60 centimeters are different edges
A 60×60 cm sheet is about 23.622×23.622 inches. A nominal 24×24 rectangle is larger by 9.6 mm along each dimension. Rounding both to “about two feet” hides that difference. Keep the exact sheet size when using the metric converter, and get actual back-opening and visible-opening measurements from a particular frame specification. The conversion does not establish an allowance or make neighboring nominal labels interchangeable.
A rectangular picture can keep its composition
A 16×20 photo behind a 24×24 outer board remains rectangular. At the sample overlap, its 15.75×19.75 window leaves 4.125-inch side borders and 2.125-inch top and bottom borders. Reprinting the image to fill a 24×24 square is different: a 4:5 image scaled to 24 inches wide becomes 24×30, losing 6 inches of scaled height in total. That removes 20% of its scaled image area. Decide whether to retain the rectangular composition before choosing the window.
A full square print needs a larger surround
For a full 24×24 sheet, the 23.75×23.75 example window gives equal 2.125-inch borders in a 28×28 board or 3.125-inch borders in a 30×30 board. These are original geometry examples, including possible custom cuts. For a gallery arrangement, obtain the completed frame’s exterior dimensions separately: the 24-inch insert or the larger outer mat does not describe the molding’s outside edges.
With a mat around a full 24 × 24 print
These centered examples use ⅛ inch overlap on each artwork edge, producing a 23.75 × 23.75-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) |
|---|---|---|---|
| 28 × 28 | 23.75 × 23.75 | 2.125 | 2.125 |
| 30 × 30 | 23.75 × 23.75 | 3.125 | 3.125 |
Window = artwork − 2 × overlap
Centered border = (outer board − window) ÷ 2
Open this 28 × 28 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 24 × 24 outer board
This reverses the question: keep the nominal frame at 24 × 24, 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) |
|---|---|---|---|
| 20 × 20 | 19.75 × 19.75 | 2.125 | 2.125 |
| 16 × 20 | 15.75 × 19.75 | 4.125 | 2.125 |
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 24 × 24 frames
Is a 24×24 frame two feet square?
Its nominal insert reference is two feet on each edge. That statement does not describe its front visible opening or outside dimensions.
Can a 20×20 print use a 24×24 outer mat?
The centered example has a 19.75×19.75 cut window and 2.125-inch borders. Verify the intended artwork size, actual window and product allowances before selecting a frame.
Does rotating a square change the size calculation?
The 1:1 nominal geometry stays the same. The image may have an intended top, and the product’s orientation specifications still need checking.
Compare related frame sizes
Return to the frame-size directory · Work backward from a frame you already own · Understand mat terminology