Letter Size in Pixels: DPI Table for Print and Screen

US Letter paper is 8.5 × 11 inches (215.9 × 279.4 mm). At 300 DPI — the standard for print — that is 2550 × 3300 pixels. At screen resolution (72 DPI), it is 612 × 792 pixels.

The right pixel dimensions depend entirely on what you are making. Screen mockups, web thumbnails, and high-resolution print all need different DPI. The table below gives you the exact numbers at every common resolution.

Quick Reference: Letter Size Pixel Dimensions

Formula: pixels = inches × DPI. So width = 8.5 × DPI, height = 11 × DPI.

Letter Size in Pixels at Every DPI

DPI (dots per inch) determines how many pixels represent each inch of paper. The same sheet of US Letter paper at 72 DPI and 300 DPI contains the same physical area — but the 300 DPI version holds 17× more pixels.

72 DPI — 612 × 792 pixels

This is the historical baseline for screen display, carried over from early Mac monitor standards. A 612 × 792 pixel image viewed at 100% on a 72 DPI monitor fills a Letter-sized area. Today most monitors run at 96–220 DPI, so 72 DPI images appear smaller than a full screen. Use this resolution for low-fidelity web thumbnails and previews — not for anything printed.

96 DPI — 816 × 1056 pixels

Windows sets its default screen resolution to 96 DPI, making this the standard for digital documents displayed on Windows systems. PDFs exported from Microsoft Word at default settings use 96 DPI for embedded images. If your workflow is office documents destined for screen reading, 816 × 1056 is the correct target.

150 DPI — 1275 × 1650 pixels

The practical minimum for printing readable text and clear images. At 150 DPI, fine detail shows up on paper but edges appear slightly soft under close inspection. Suitable for internal reports, draft proofs, and documents where you want a balance between file size and readability. Not suitable for professional publishing or client-facing print.

300 DPI — 2550 × 3300 pixels

The industry standard for professional print. At 300 DPI, the human eye at normal reading distance cannot distinguish individual dots — output appears continuous and sharp. Use 2550 × 3300 pixels for anything sent to a commercial printer: brochures, posters, book pages, stationery, packaging inserts. Most print service providers require 300 DPI minimum.

600 DPI — 5100 × 6600 pixels

Reserved for high-end output: fine art reproduction, archival scanning, and professional photography print. File sizes are large (an uncompressed TIFF at 600 DPI can exceed 90MB for a single Letter page), so use this resolution only when the output medium justifies it. Most users never need 600 DPI for documents.

Letter vs A4 Size in Pixels

US Letter (8.5 × 11 in) and A4 (8.27 × 11.69 in) are close in size but not identical. A4 is slightly narrower and slightly taller.

This difference matters when exchanging documents internationally. A Word template set to US Letter will not print cleanly on an A4 printer — margins shift and content gets clipped. If you are working with European collaborators or printers, confirm the page size before building the layout.

The aspect ratios differ too: US Letter is approximately 1:1.294, while A4 is approximately 1:1.414 (which is √2, the geometric basis of the ISO 216 paper standard). For a full breakdown of A4 pixel dimensions at every DPI, see our A4 size in pixels guide.

When to Use Which DPI

Picking the wrong DPI wastes time — either you get a blurry print or an unnecessarily huge file. Here is how to choose:

72–96 DPI — Screen only. Web thumbnails, social media graphics, email headers. Anything that will never be printed. Exporting at 300 DPI for a web image creates a file 17× larger with zero visible benefit on screen.

150 DPI — Draft printing. Internal documents, reference prints, proofing passes. Not for anything a client or print service will see.

300 DPI — Default for all professional print. If you are unsure, use 300. Almost every commercial printer, print-on-demand service, and professional design workflow expects 300 DPI. Understanding the difference between resolution and image quality is covered in detail in our image resolution guide.

600 DPI — High-end output only. Scanning original artwork for digital archiving, printing on large-format plotters, or fine art giclee prints. For standard document printing, 600 DPI offers no practical improvement over 300 and doubles the file size.

One exception: Line art and vector content (logos, diagrams, text-heavy illustrations) benefit from higher DPI because hard edges alias more visibly. If your document is mostly black-and-white line art, 600 DPI produces noticeably sharper results.

If you are working with raster images destined for print and need to change image DPI without resampling, the DPI value in the file metadata can be adjusted without altering the pixel dimensions. For other common print and digital dimensions, see our standard photo dimensions guide.

How to Resize to Letter Dimensions

With Pixotter (Fastest)

Pixotter's resize tool runs entirely in your browser — no upload, no account, no waiting.

1. Open pixotter.com/resize.
2. Drop your image onto the tool.
3. Enter the target dimensions. For 300 DPI print: 2550 × 3300. For 96 DPI screen: 816 × 1056.
4. Choose whether to maintain aspect ratio or stretch to exact dimensions.
5. Click Download.

The result is ready in seconds. If you also need to reduce the file size before printing or sharing, run the result through the Pixotter compress tool immediately after resizing — no re-upload needed.

With Photoshop

1. Open your image. Go to Image → Image Size (Alt+Ctrl+I / Option+Cmd+I).
2. Set Resolution to 300 (or your target DPI).
3. Confirm the Width and Height show 8.5 in × 11 in (or 2550 × 3300 px at 300 DPI).
4. Make sure Resample is checked and set to Preserve Details 2.0 for upscaling or Bicubic Sharper for downscaling.
5. Click OK. Save as TIFF or high-quality JPEG for print.

If your source image is smaller than 2550 × 3300 pixels, Photoshop will upscale it — which introduces softness. Always start with the highest resolution source available. For more on resizing without quality loss, see our how to reduce image size guide.

With GIMP (Free)

1. Open your image. Go to Image → Scale Image.
2. Set Width to 2550 px and Height to 3300 px. Change the interpolation to Cubic or NoHalo for best quality.
3. Click Scale Image.
4. Go to Image → Print Size and confirm the resolution is set to 300 PPI.
5. Export via File → Export As to JPEG or TIFF.

With ImageMagick (Command Line)

# Resize to Letter at 300 DPI (2550x3300 pixels)
convert input.jpg -resize 2550x3300! -density 300 output.jpg

# Resize proportionally to fit within Letter dimensions
convert input.jpg -resize 2550x3300 -density 300 output.jpg

Use 2550x3300! (with exclamation mark) to force exact dimensions regardless of aspect ratio. Omit the ! to resize proportionally within the Letter bounding box. Tested with ImageMagick 7.1.1.

FAQ

What is the pixel size of US Letter paper at 300 DPI? US Letter at 300 DPI is 2550 × 3300 pixels. This is the standard for professional print output — enough resolution that individual dots are invisible to the naked eye at normal reading distance.

What size is US Letter in pixels at 72 DPI? At 72 DPI, US Letter is 612 × 792 pixels. This is the historical screen resolution standard, used for low-resolution web mockups and previews. It is not suitable for printing.

Is US Letter the same as A4? No. US Letter is 8.5 × 11 inches (2550 × 3300 px at 300 DPI). A4 is 8.27 × 11.69 inches (2480 × 3508 px at 300 DPI). Letter is wider; A4 is taller. They are not interchangeable in print workflows.

What DPI should I use for printing a Letter-sized document? Use 300 DPI (2550 × 3300 pixels) for any professional or client-facing print work. 150 DPI is acceptable for internal drafts. Anything below 150 DPI will produce visibly soft output on a standard inkjet or laser printer.

Why does my image look blurry when I print it at Letter size? Your image resolution is too low for the print dimensions. If a 612 × 792 pixel image (72 DPI) is printed at Letter size, the printer must stretch each pixel across a much larger area, producing blur. The fix: start with a higher resolution source image, or accept the lower print quality. Upscaling a low-resolution image adds pixels but cannot recover detail that was never captured.

Can I resize my image to Letter dimensions without losing quality? You can resize down (reduce pixel dimensions) without visible quality loss. Resizing up (upscaling) always involves some interpolation — the software must invent pixel data that was not there. Modern upscaling algorithms (Preserve Details 2.0 in Photoshop, Lanczos in GIMP) do this well, but they cannot recover detail that was never in the original. Start with the highest resolution source available.

US Letter is a fixed physical size — 8.5 × 11 inches — but its pixel equivalent shifts with DPI. For print, 2550 × 3300 pixels at 300 DPI is the number to know. For screen, 816 × 1056 at 96 DPI or 612 × 792 at 72 DPI covers most use cases.

If you work across international borders, you will regularly deal with both Letter and A4. See our A4 size in pixels guide for the equivalent DPI table and a deeper comparison of the two standards.