How to Choose the Right Picture Frame Size for 18×22 Photos? | Mat Or No Mat

An 18×22 print needs an 18×22 frame for a snug fit, or a larger frame if you plan to add a mat border.

When you’re picking a frame for an 18×22 photo, the first decision isn’t color or style — it’s whether you want a mat. That single choice determines the frame size you buy. For an exact 18×22 print, the standard match is an 18×22 frame without a mat, which fits artwork that measures 18 inches by 22 inches without trimming. The sizing steps below walk through measuring correctly and choosing between a snug fit and a matted look.

Measure The Image, Not The Paper

The most common mistake is measuring the paper size instead of the image itself. Many prints include white borders or bleed around the edges, so the visible image may be smaller than the sheet you’re holding. Adobe’s framing guide lists measuring the actual image area as the first step.

Lay the print flat on a clean surface and measure height and width edge to edge. Record the numbers in inches, and add centimeters or millimeters as well if you might buy from a mixed-standard seller. If the print has a white border you plan to trim, do that before measuring so the frame fit stays accurate.

• Measure the image area you want visible, not the white border.
• Lay the photo flat — never measure while it’s curled or bent.
• Trim first if trimming is part of the plan.

Match Orientation And Aspect Ratio

Orientation matters more than people expect. An 18×22 photo is a portrait orientation, so the frame needs to match that layout — a landscape 22×18 frame will not fit properly. Adobe’s picture frame sizing guide specifically calls out checking orientation before ordering.

Aspect ratio is the other silent factor. Standard frame sizes like 16×20, 18×24, and 24×36 each carry their own ratios, so confirm the frame’s opening matches your print’s dimensions.

When To Size Up For A Mat

If you want a mat around the photo, choose a frame larger than 18×22. The frame must accommodate both the print and the mat border, so the mat’s outside edge becomes the number that matters. Measure the outer edge of the mat to determine the minimum frame size — this is the measurement trusted sources tell you to take when a mount is involved.

One caveat: some manufacturers cut mat windows slightly smaller than the print so more image shows through. This is a manufacturer-specific practice, not a universal standard, so check the product listing’s window dimensions if the mat comes pre-cut.

Wall Space And The Final Check

Before ordering, consider where the frame will hang. An 18×22 print on a wide wall may work better grouped with smaller pieces than standing alone.

Confirm the frame’s orientation and intended display location before checkout. If the artwork is valuable or archival, precise measurement prevents the need for trimming or visible cropping later.

Once you’ve measured and decided on the mat question, you’re ready to compare options. Our tested roundup of the best 18 x 22 picture frames covers the top-rated picks for both snug fits and matted setups.

Framing Decisions At A Glance

FAQs

What happens if I put an 18×22 print in an 18×24 frame?

The print will fit within the frame’s width, but you’ll have two extra inches of empty space along one edge. That gap either needs a mat to look intentional, or the print will shift and appear off-center. If you’re not adding a mat, stick with the exact 18×22 size for a clean, snug fit.

Can I trim an 18×22 photo to fit a smaller frame?

You can, but only if the print has enough white border or bleed so trimming doesn’t cut into the image. Measure the visible image area first and confirm the frame’s opening is at least that large. For valuable or archival prints, avoid trimming entirely and buy the correctly sized frame instead.

Do standard frames come in 18×22 or is it a custom size?

Most major frame retailers and online marketplaces stock this size regularly, so you won’t need a custom order for a basic 18×22 frame without a mat.