13 × 16 frame size
A nominal 13×16 frame names a 13×16-inch insert, equal to 33.02×40.64 cm. Its 13:16 proportions are close to 4:5 but not identical; a smaller-picture mat and the frame’s exterior use separate dimensions.
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.
13 × 16 inches in cm, mm and both orientations
| Measurement | Portrait / listed order | Landscape / reversed order |
|---|---|---|
| Inches | 13 × 16 | 16 × 13 |
| Centimeters | 33.02 × 40.64 | 40.64 × 33.02 |
| Millimeters | 330.2 × 406.4 | 406.4 × 330.2 |
| Aspect ratio | 13:16 | 16:13 |
Swapping width and height changes portrait to landscape without changing area. 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 13 × 16 sheet
Compare a frame described for a 13 × 16-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 subtle difference from an 8×10 image
Scaling an 8×10 image to 13 inches wide makes it 16.25 inches tall. Filling a 13×16 print therefore removes 0.25 inch of scaled height in total. Fitting the entire image to 16 inches tall gives 12.8×16, leaving 0.2 inch of total side space. The difference is small but can matter to edge text; mat overlap can cover another separately specified strip after printing.
9×12 artwork in a 13×16 outer board
A 13×16 board adds 4 inches to both dimensions of a 9×12 drawing sheet. The sample 8.75×11.75 window then leaves equal 2.125-inch borders. An 11×14 print in that same board produces equal 1.125-inch borders. These two uses explain a 13×16 outer-board comparison without calling either smaller artwork a 13×16 print.
13×16 versus 12×16 and larger boards
A 12×16 sheet is 1 inch narrower while keeping the same height, so a nominal label cannot be substituted in both directions. For a full 13×16 sheet, a 17×20 mathematical board gives equal 2.125-inch borders at the sample overlap. An 18×24 board gives 2.625-inch side borders and 4.125-inch top and bottom borders, a distinctly taller surround. Neither example establishes a supplier’s inventory.
With a mat around a full 13 × 16 print
These centered examples use ⅛ inch overlap on each artwork edge, producing a 12.75 × 15.75-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) |
|---|---|---|---|
| 17 × 20 | 12.75 × 15.75 | 2.125 | 2.125 |
| 18 × 24 | 12.75 × 15.75 | 2.625 | 4.125 |
Window = artwork − 2 × overlap
Centered border = (outer board − window) ÷ 2
Open this 17 × 20 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 13 × 16 outer board
This reverses the question: keep the nominal frame at 13 × 16, 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) |
|---|---|---|---|
| 9 × 12 | 8.75 × 11.75 | 2.125 | 2.125 |
| 11 × 14 | 10.75 × 13.75 | 1.125 | 1.125 |
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 13 × 16 frames
Is 13×16 exactly 4:5?
No. Its ratio is 0.8125 in portrait order; 4:5 is 0.8. Compare fit versus fill before printing an image in the new shape.
What is a landscape 16×13 frame in millimeters?
The nominal rectangle is 406.4×330.2 mm. Actual back-opening clearance and visible-opening dimensions are not included in that conversion.
Can an 11×14 photo use a 13×16 outer mat?
The nominal geometry leaves room around the full sheet. The modeled 10.75×13.75 window has 1.125-inch borders; confirm the exact board, cut window and frame specifications with the supplier.
Compare related frame sizes
Return to the frame-size directory · Work backward from a frame you already own · Understand mat terminology