If you picture a standard double-bed mattress, a 24×32 inch print covers about a quarter of that surface — it’s a large, substantial format used for fine-art Giclée prints and custom framing. Before you order a frame or order a print, the conversion numbers and real-world fit matter. A 24×36 inch poster is the standard you see in stores; a 24×32 inch is a slightly squarer photographic size with its own framing requirements.
Exact Dimensions and Conversions
The international definition of an inch (2.54 cm exactly, adopted in 1959) makes the math simple: 24 inches multiplied by 2.54 equals 60.96 cm, and 32 inches equals 81.28 cm. That’s roughly 61 cm wide and 81 cm tall. In millimeters, the print is 609.6 × 812.8 mm.
The aspect ratio is 3:4 (1.333), the same as classic four-thirds sensors found in many DSLR and mirrorless cameras from Olympus and Panasonic.
Why It’s Not a Standard Poster Size
A 24×32 inch print sits outside that standard, which matters when you shop for off-the-shelf frames. You won’t find a 24×32 inch poster at the drugstore — you’ll be ordering a photographic or Giclée fine-art print that requires either a custom mat or a frame built to these exact inner dimensions.
How It Compares to A1 Paper
In framing contexts, many shops treat them as close equivalents, but the difference matters for mat openings and frame channels.
Framing a 24×32 Inch Print
Framing this size is the step where most mistakes happen. The print needs either a 24×32 inch mat opening with no outer frame or a 24×36 inch standard frame that holds a 20×30 inch print with an adapter — not a direct drop-in. Always measure the frame’s inside perimeter, not the outer depth, because temperature changes can shift the materials slightly.
If you’re ready to buy, our roundup of the best 24×32 inch frames covers the top custom and ready-made options with exact fit specs and user reviews.
Common Mistakes to Avoid
- Confusing 24×32 with 24×36: The poster standard is 24×36 (A1 equivalent). A 24×32 won’t fit that frame without cropping or adapters.
- Ordering a frame by print dimensions only: The frame must be sized for the mat opening, not the outer edge.
- Using a low-resolution image: Below 240 DPI may look soft at this size; your source image needs at least 1,728 pixels on the short side at 300 DPI.
- Assuming 4:3 ratio fits every sensor: Most phone cameras (16:9) and many DSLRs (3:2) will require cropping to fill the print without white borders.
Printing Requirements At a Glance
| Print Resolution | Minimum Pixel Dimensions | Best Use |
|---|---|---|
| 300 DPI (sharp) | 1,728 × 2,304 px | Fine art, gallery display, close viewing |
| 240 DPI (good) | 1,382 × 1,843 px | Standard photographic print, moderate viewing distance |
| 150 DPI (acceptable) | 864 × 1,152 px | Large wall poster viewed from 3+ feet |
The Right Frame and Mat Size For a 24×32 Print
| Setup | Mat Opening | Outer Frame Size |
|---|---|---|
| Print with mat (no outer frame) | 24 × 32 in | N/A |
| Print in standard 24×36 frame | 20 × 30 in | 24 × 36 in |
| Print with custom mat in 24×36 frame | Cut 1/8–1/4 in smaller than listed | 24 × 36 in |
Measuring Your Print For a Frame
Use a ruler marked in inches. Measure the width from left edge to right edge, then the height from top to bottom. Exclude any white borders you intend to hide under the mat. Add 2–3 inches to those numbers when shopping for a frame that includes a border — that extra margin is what the frame’s outer edge covers.
The when you set the print into the frame, the image sits square with no edges visible and no tension on the paper. If the mat is too tight, the print may buckle; if too loose, it shifts when hung.
Which Devices and Cameras Fit This Ratio Best
The 4:3 aspect ratio (1.333) matches the output of most Micro Four Thirds and traditional four-thirds cameras (Olympus, Panasonic Lumix), as well as many compact cameras and older point-and-shoot models. Cameras with 3:2 sensors (most Canon, Nikon, Sony full-frame and APS-C) or 16:9 sensors (many phone cameras) will need cropping on the long side to fill the full 24×32 inch print without white bars. Plan for that crop when composing the shot.
FAQs
Is 24×32 the same as A1 paper?
No. A1 paper measures 594 × 841 mm (23.4 × 33.1 inches), while 24×32 inches equals 609.6 × 812.8 mm. The print is roughly 15 mm wider and 28 mm shorter than A1, so a frame built for A1 will leave gaps or require a custom mat.
Can I use a 24×36 poster frame for a 24×32 print?
Only if you use a mat adapter. A 24×36 frame holds a 20×30 inch print as standard. You would need a mat cut with a 24×32 opening to center the print inside the larger frame, or the print would float with visible gaps.
What pixel size do I need for a 24×32 print at 300 DPI?
Below 240 DPI, the print may look soft when viewed up close.
What aspect ratio is 24×32?
The aspect ratio is 3:4 (1.333:1). This matches four-thirds camera sensors. Images shot at 3:2 (1.5:1) or 16:9 (1.78:1) will need cropping on the long side to fill the print without borders.
Where can I buy a 24×32 frame off the shelf?
Ready-made 24×32 frames are uncommon at big-box retailers. Most are available through custom framing shops, specialty frame destinations, or online retailers that cut mats to size. Ready-made standard poster frames (24×36) do not fit without a mat.
References & Sources
- Frame Destination. “Guide to Frame and Mat Dimensions for Common Print Sizes.” Documents mat cutting tolerances and frame sizing for 24×32 prints.
- PrettyCool Studio. “Convert Inches to Centimeters.” Provides conversion math for 24×32 dimensions.
- Haus of Prints. “Standard Size for Posters.” Lists common poster sizes and notes 24×36 as the industry standard.
- Happy Moose. “How Big Can I Print My Photos?” Explains DPI requirements and pixel math for large prints.