What pixel size is an 18x24 print at 300 DPI?

An 18x24 inch print at 300 DPI requires a pixel dimension of 5,400 by 7,200 pixels. This calculation comes from multiplying the 18-inch width by 300 dots per inch and the 24-inch height by 300 dots per inch, resulting in 5,400 x 7,200 pixels. This resolution yields an image of about 38.9 megapixels, which is comparable to high-quality photos taken with a 36 to 50-megapixel camera. For Etsy sellers creating print-ready files, this ensures sharp, professional prints without pixelation. To prepare your artwork, set your canvas size in your design software to these pixel dimensions at 300 DPI before exporting the final file for print-on-demand services.

Does 18x24 fit an IKEA RIBBA frame?

Yes — the IKEA RIBBA medium frame (50 x 70 cm) is approximately 19.7 x 27.6 inches, slightly larger than 18x24 inches. The included mat brings the visible area down to about 30 x 40 cm (12 x 16 inches), so an 18x24 print fits inside the 50x70 frame with the mat covering some outer edge. List as 'fits IKEA RIBBA 50x70' to attract this buyer specifically.

What aspect ratio is 18x24?

The 18x24 inch print size corresponds to a 3:4 aspect ratio since 18 divided by 24 simplifies to 3 over 4. This aspect ratio is very common for medium to large wall art because it fits standard frame sizes comfortably. Examples of other print dimensions sharing this 3:4 ratio include 12x16, 9x12, 15x20, and 24x32 inches, all popular frame sizes sold by brands like IKEA worldwide. When preparing designs for Etsy or other print-on-demand platforms, maintaining the 3:4 ratio helps customers find matching frames easily and ensures your artwork looks balanced and professional.

Can I print an 18x24 from a 12 MP iPhone photo?

Not at full sharpness. A 12 MP photo is 4,000 x 3,000 pixels — about 30% of the 39 MP needed for 18x24 at 300 DPI. Either AI-upscale 1.5-2x to reach the sharp 300 DPI target, or accept ~200 DPI quality which works for prints viewed from across a room.

Is 18x24 the same as A2?

No. A2 is 420 x 594 mm (16.5 x 23.4 inches), with a 1:√2 ratio (~1:1.414). 18x24 is 3:4 ratio (~1:1.333). They're close in physical size but use different frames and have different aspect ratios. If you sell internationally, include both as separate file variants — A2 for European buyers without IKEA frames, 18x24 for IKEA RIBBA buyers.

What's the difference between 18x24 and 12x16?

Same aspect ratio (both 3:4), different scale. 12x16 is a smaller medium frame (3,600 x 4,800 px at 300 DPI); 18x24 is a larger medium frame (5,400 x 7,200 px). A single 3:4 master image scales naturally between both sizes — design once at 18x24 dimensions, downscale losslessly to 12x16.

Why do IKEA RIBBA frames have a mat by default?

The mat creates a buffer between the print and the frame edge, gives a more polished look, and accommodates slight variations in print size (so the frame works for both A-size and inch-size prints with mild cropping). For sellers, this means designing with a centered focal point that survives the mat's reduction of the visible area to roughly the inner 12x16 zone.

How do I deliver both 18x24 (US) and A2 (ISO) for international buyers?

To serve both US customers who want an 18x24 inch print and international buyers who prefer the A2 ISO size, you should include separate files for each dimension in your Etsy listing. Etsy allows up to 5 digital files per product, so you can easily add 18x24 inch and A2 sized files to a print bundle without any issues. Clearly naming your files with labels like 'Print_18x24_inches_RIBBA.jpg' and 'Print_A2_ISO.jpg' helps buyers identify which file matches the frame or paper size they need. This practice improves customer satisfaction and reduces confusion around size compatibility when selling print-on-demand art internationally.

Size Guide

18x24 Print Pixel Requirements

An 18x24 print at 300 DPI requires an image size of 5400 x 7200 pixels for optimal quality. This resolution ensures clear, sharp prints on platforms like Etsy and Printify, aligning with standard frame dimensions such as IKEA RIBBA. Use these pixel dimensions to create professional wall art designs that meet print-on-demand specifications.

5 min read · April 26, 2026 · Updated April 26, 2026

An 18x24 inch print at 300 DPI requires 5,400 x 7,200 pixels — 38.9 megapixels total. The math: 18 inches × 300 dpi = 5,400 pixels wide; 24 × 300 = 7,200 tall. This is a 3:4 aspect ratio (the same ratio as 12×16 and 9×12 frames), and it perfectly matches the IKEA RIBBA frame in size 50×70 cm — the most popular medium frame in IKEA's global lineup.

For Etsy sellers shipping internationally, 18x24 is one of the highest-converting sizes because IKEA buyers worldwide already own a frame at this size. Verify your file against the 5,400 x 7,200 target before listing.

The 18x24 pixel answer at every DPI

DPI	Pixels (W × H)	Megapixels	Quality verdict
300 DPI	5,400 × 7,200	38.9	Print-ready (Etsy standard)
200 DPI	3,600 × 4,800	17.3	Good for living-room viewing distance
150 DPI	2,700 × 3,600	9.7	Acceptable for distance only
72 DPI	1,296 × 1,728	2.2	Web only — do not print at this size

39 megapixels is roughly the resolution of a Pro DSLR or a flagship phone shooting at full 48-50 MP. Most native shots fall short by 10-25 MP and benefit from a 2x AI upscale to reach a sharp 18x24 at 300 DPI.

Why the IKEA RIBBA factor makes 18x24 essential

IKEA's RIBBA frame line is the most-purchased home picture frame in the world. The medium RIBBA size is 50 × 70 cm — almost exactly 18 × 24 inches (the actual conversion is 19.7 × 27.6 inches, but most sellers list the closest US standard, 18x24, since RIBBA accommodates with a small mat).

This matters because:

IKEA is in 50+ countries. A buyer in the UK, Germany, Australia, Japan, or Canada with a RIBBA frame can use your 18x24 print. North-America-only sizes (16x20, 24x36) leave huge international markets unfillable.
RIBBA frames cost £5-15. Buyers don't hesitate at the frame cost. The combo of cheap frame + affordable digital download + in-stock-everywhere-globally is unbeatable for international sales velocity.
RIBBA includes a mat by default. The mat reduces visible image area to roughly 30 × 40 cm (about 12 × 16 inches) inside the 50 × 70 frame. Designs centered in the inner area work for both mat-on and mat-off configurations.

Including 18x24 in your Etsy bundle (alongside ISO A-series for non-IKEA international buyers) opens up most of the European, UK, Australian, and Asian markets that pure US-frame bundles miss.

When buyers specifically want 18x24

International IKEA shoppers. The dominant 18x24 use case. Anyone with a 50×70 cm RIBBA frame — and that's hundreds of millions of households globally — needs 18x24 art. List as "fits IKEA RIBBA 50x70" in the title or description to capture this search directly.
Bedroom or living-room mid-tier statement. Smaller than a 24x36 statement piece but bigger than a 16x20 medium — 18x24 fills the gap for buyers who want significant wall presence without going large.
Gallery wall focal piece (small rooms). In bedrooms, hallways, and small studios where 24x36 would dominate, 18x24 becomes the gallery wall focal point with smaller 8x10s and 11x14s arranged around it.
Office and rental decor. Renters often want significant decor that doesn't damage walls. 18x24 in a Command-strip-mounted frame is the renter sweet spot — meaningful presence, removable, IKEA-affordable.

Common 18x24 sizing mistakes

1. Confusing 18x24 inches with A2 (similar but not identical)

A2 is 420 × 594 mm (16.5 × 23.4 inches), with a 1:√2 ratio. 18x24 is 3:4 ratio (taller relative to width). They're close in size but use different frames and ratios. International buyers with A2 frames need a separate A2 file (4,961 × 7,016 px at 300 DPI), not an 18x24 file.

2. Confusing 18x24 (3:4 portrait) with 24x18 (3:4 landscape)

Same ratio, different orientation. Buyers ordering "18x24" almost always mean portrait (taller than wide). Always confirm orientation in the listing title or thumbnail.

3. Designing edge-to-edge without accounting for the IKEA RIBBA mat

RIBBA's default mat reduces the visible area to ~12×16. If your design has critical content within 3 inches of the edge, the mat covers it. Either keep important content centered, or design two variants (one for mat-on, one for mat-off) and let buyers pick.

4. Sourcing from a 12 MP phone photo and printing 18x24 unscaled

A 12 MP phone photo is 4,000 × 3,000 pixels — about a third of the 39 MP needed for sharp 18x24 at 300 DPI. The print will be visibly soft. Either AI-upscale 1.5-2x or downsize the listed print to 13x10 (the size 12 MP supports natively).

5. Ignoring international shipping considerations

For digital downloads, no shipping issue exists. But if you're upselling printed-and-shipped variants alongside the digital download, 18x24 is heavier and more expensive to ship internationally than 8x10 or 11x14. Build international shipping costs into your pricing for printed 18x24, or offer digital-only for international buyers.

18x24 at a glance

Diagram showing an 18x24 inch wall art print at 5,400 x 7,200 pixels, 3:4 ratio, fits IKEA RIBBA frame at 300 DPI — The 18×24 inch print at 300 DPI — 5,400 × 7,200 px, fits IKEA RIBBA 50×70.

Designing at 3:4 to support 18x24 cleanly

3:4 is one of the four core wall art ratios (alongside 2:3, 4:5, and 1:1). Designing master images natively at 3:4 means a single source supports multiple frame sizes:

9 × 12 inches (3:4): 2,700 × 3,600 px at 300 DPI. Small format.
12 × 16 inches (3:4): 3,600 × 4,800 px at 300 DPI. Medium format.
15 × 20 inches (3:4): 4,500 × 6,000 px at 300 DPI. Less common but supported.
18 × 24 inches (3:4): 5,400 × 7,200 px at 300 DPI. The IKEA RIBBA target.
24 × 32 inches (3:4): 7,200 × 9,600 px at 300 DPI. Large format.

Working from a single 3:4 master at 7,200 × 9,600 (the largest size you plan to support), you can downscale losslessly to all smaller 3:4 sizes including 18x24. This is the cleanest workflow for any seller offering 3:4 variants in their listing.

For 5-ratio Etsy bundles, the 18x24 typically represents the 3:4 slot, paired with 24x36 (2:3), 16x20 (4:5), 11x14 (11:14), and A2 (ISO).

Frequently asked questions

Related guides

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Why 18x24 is essential for international markets.

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Smaller 2:3 sibling — natural pair with 18x24 in a bundle.

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