RatioReady
Free Tool

Frame Size Finder

Pick a frame size, see exactly how many pixels you need at 300 DPI, the aspect ratio it matches, and whether your image will fit cleanly.

An overhead arrangement of empty matte black picture frames in different sizes on a wooden desk with a brass measuring tape

1. Pick a frame size

Or enter custom (inches)

Orientation

2. What this frame needs

Pixels needed @ 300 DPI:

2,400 × 3,000 px

7.2 megapixels total

Aspect ratio4:5
At 200 DPI1,600 × 2,000
At 150 DPI1,200 × 1,500
Three frame sizes shown with their pixel requirements at 300 DPI: 8x10 needs 2400x3000, 16x20 needs 4800x6000, 24x36 needs 7200x10800
From a small 8×10 to a statement 24×36 — pixel requirements scale with frame size at 300 DPI.

Standard Frame Sizes Quick Reference

Frame Aspect Ratio Pixels @ 300 DPI MP
4×6"2:31,200 × 1,8002.2
5×7"5:71,500 × 2,1003.2
8×10"4:52,400 × 3,0007.2
11×14"11:143,300 × 4,20013.9
12×16"3:43,600 × 4,80017.3
12×18"2:33,600 × 5,40019.4
16×20"4:54,800 × 6,00028.8
18×24"3:45,400 × 7,20038.9
20×30"2:36,000 × 9,00054.0
24×36"2:37,200 × 10,80077.8

When you’d use this tool

Frame planning is constant work for any wall art seller. These are the four scenarios where I reach for this tool most:

  1. Sizing a custom commission to fit a specific frame the buyer owns. A buyer says "I have an 11×14 frame at home" — you compute 3,300 × 4,200 pixels at 300 DPI, check your source has enough resolution, and ship without surprises.
  2. Auditing your existing listings for sharpness. Old listings often have files sized for one frame but advertised as compatible with several. The finder lets you spot-check whether your file actually meets 300 DPI for every frame size you list.
  3. Planning a 5-ratio bundle. Most successful Etsy wall art listings include 5 size variants (4×6, 8×10, 11×14, 16×20, 24×36 typically). Use the finder to confirm your master image supports the largest variant before you commit.
  4. Quoting a non-standard frame request. Buyers occasionally request odd sizes — 14×18, 22×28, 30×40 — that don't match standard ratios. The finder shows whether the closest standard ratio is close enough to crop from, or if you need a dedicated file.

Common frame-sizing mistakes

Five frame mistakes that account for most "my print didn't fit" support tickets I've seen.

1. Sizing to outer frame dimensions instead of photo opening

A "10×12 frame" usually has an 8×10 photo opening — the extra 2 inches is the mat and frame width. Always size your file to match the printed area, never the outer frame.

2. Forcing an image into a non-matching ratio

An 8×10 (4:5) image stretched to fit 11×14 (≈1:1.27) will look distorted. Either crop the image to the new ratio (losing some content) or design separately for each ratio. Never stretch.

3. Adding mat space inside the digital file

The mat is a physical piece of paper the buyer adds, not part of your file. If you include white border space in the file expecting it to function as a mat, the buyer's mat will overlap and crop your image awkwardly.

4. Mixing US and ISO frame sizes

A US 16×20 frame is not the same as an A2 (16.5×23.4 inches). If a buyer asks for "an A2 print", don't ship a 16×20 file. Use the finder to verify which standard the buyer's frame uses.

5. Forgetting frame size affects required upscaling

A source image that comfortably prints at 8×10 (7.2 MP needed) falls short for 24×36 (78 MP needed) by a factor of 11. The same image needs aggressive AI upscaling for the bigger frame. Plan upscaling around your largest target frame, not your smallest.

Need to fit any frame? Ratio Ready outputs sized files for every standard frame in seconds — wall art converter, poster maker, AI upscaler.

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Frame size questions

Related tools and guides

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