LTLPrintsLarger Than Life
2:3 Aspect Ratio · POSTER STANDARD

12×18" Print Size: Pixels, DPI & Wall Scale Guide

To print a crisp 12×18 inch (30.5 × 45.7 cm) piece at lab-standard 300 DPI, prepare an image of 3,600 × 5,400 pixels (19.44 MP). Native 3:2 camera sensor enlargement for landscapes and travel photos.

12×18" Resolution Table by DPI & Viewing Distance

Print DensityExact Pixels (12×18")With 0.125" BleedMegapixelsMin Viewing DistanceQuality Grade
300 DPI3,600 × 5,400 px3,675 × 5,475 px19.44 MP0.9 ft (11")Excellent (300+ PPI)
240 DPI2,880 × 4,320 px2,940 × 4,380 px12.44 MP1.2 ft (14")Very good (240–299 PPI)
200 DPI2,400 × 3,600 px2,450 × 3,650 px8.64 MP1.4 ft (17")Wall-ready / good at viewing distance (150–239 PPI)
150 DPI1,800 × 2,700 px1,838 × 2,738 px4.86 MP1.9 ft (23")Wall-ready / good at viewing distance (150–239 PPI)
120 DPI1,440 × 2,160 px1,470 × 2,190 px3.11 MP2.4 ft (29")Fair — large/distant viewing only (100–149 PPI)
100 DPI1,200 × 1,800 px1,225 × 1,825 px2.16 MP2.8 ft (34")Fair — large/distant viewing only (100–149 PPI)

Wall Placement Rule

Above a 28"–36" accent table or desk.

Frame & Mat Pairing

18×24 matted frame or magnetic metal poster.

Canvas Wrap Allowance

For a 0.75" wrap, export 14×20" (4200×6000 px). For a 1.5" gallery wrap, export 15.5×21.5".

Test Your Photo for a 12×18" Print

Check my photo at 12×18" →

Runs in your browser — your photos never leave your device. Pick a standard print size or drop any image to inspect its exact DPI at wall scale.

Quick sizes:
Required File Resolution (300 DPI)Aspect Ratio: 2:3

3,600 × 5,400 px

Megapixels19.44 MP
Metric Size30.5 × 45.7 cm
Total Cut Size12" × 18"
Min View Dist.0.9 ft (11")
12" × 18"2:3

With a 1.5" gallery canvas wrap + 0.25" bleed, prepare 4650×6450 px (15.5"×21.5").

Ready to Print

Where to print a 12×18 poster print

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ShutterflyHas standard photo sizes

Everyday photo prints, 4×6 to 24×36 enlargements, and tabletop frames.

Best for: Standard photo enlargements (4×6, 5×7, 8×10, 11×14, 16×20) and gift orders.

Choose 12×18 on their site after you open the link.

Easy Canvas Prints

Fast U.S. stretched photo canvases in standard & custom wall sizes.

Best for: Homeowners printing phone or camera photos on 0.75" or 1.5" gallery wrap.

Society6

Artist-designed peel-and-stick wall murals, art prints, and gallery frames.

Best for: Room-scale wall murals, botanical/retro/kids themes, and independent artist prints.

Ready to Print

Where to print a 12×18 metal print

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DisplateMetal prints with magnetic mount

Thick steel posters mounted with tool-free magnetic wall leaves.

Best for: High-contrast photography, illustration, game rooms, and studios.

Choose 12×18 on their site after you open the link.

CanvasChamp

Budget-friendly custom sizes up to oversized wall formats & split canvases.

Best for: Custom dimensions, multi-panel triptychs, and low entry cost per square foot.

Choose 12×18 on their site after you open the link.

Shutterfly

Everyday photo prints, 4×6 to 24×36 enlargements, and tabletop frames.

Best for: Standard photo enlargements (4×6, 5×7, 8×10, 11×14, 16×20) and gift orders.

Choose 12×18 on their site after you open the link.

12×18" Print Size FAQs

How many pixels is a 12×18 print at 300 DPI?
A 12×18 inch print at 300 DPI requires 3,600 × 5,400 pixels (19.44 megapixels). If your print lab requires a 0.125" full-bleed trim margin on each side, export at 3,675 × 5,475 pixels.
What is 12×18 inches in centimeters and millimeters?
12×18 inches equals 30.5 × 45.7 cm (305 × 457 mm). The total surface area is 216 square inches (1.50 sq ft).
What aspect ratio is a 12×18 print?
A 12×18 print has a 2:3 aspect ratio (decimal 0.6667). Other standard print sizes sharing the exact 2:3 ratio include 4×6", 8×12", 16×24", 20×30", 24×36", 40×60".
Can I print a 12 MP phone photo at 12×18?
A standard 12 MP smartphone photo (3024 × 4032 px) prints at 224 DPI on a 12×18" print. That is plenty sharp for framed wall art and stretched canvas.

Compare Other Standard Print Sizes