DPI & Print Size Calculator
Know exactly what pixel dimensions you need for a given print size — or what print size your image can safely deliver. 300 DPI = production-ready, 150 = draft, 72 = web only.
How was this result?
What is DPI and why does it matter for print?
DPI (dots per inch) is the density at which ink is laid down on paper, which for digital design work translates directly to how many pixels you need per physical inch of print. A 300-DPI print at 10 inches wide needs 3000 pixels of source image. Anything less and the print looks soft, pixelated, or jagged at the edges.
The industry defaults exist for a reason: 300 DPIis the minimum commercial print spec for brochures, magazines, packaging, textile, and most fine-art work — it's the density at which the human eye can no longer resolve individual dots at normal viewing distance. 150 DPI is acceptable for draft proofs, large-format banners viewed from distance, and some low-cost textile. 72 DPI is screen-only and will look obviously pixelated on any printed surface.
If your source image doesn't have enough pixels for the print size you need, you have two options: shrink the print, or run the image through our AI Image Upscaler at 2× or 3× to multiply the pixel count. Soft or blurry sources benefit from a pass through the AI Image Sharpener first — sharp pixels upscale cleaner than blurry ones.
What people use the DPI calculator for
Convert pixels to inches for print
The most common use: you've got a 3000×2000 image and need to know how big it'll print at 300 DPI before committing to the production run. The result (10×6.67 inches) plus a clear quality verdict tells you in one glance whether you're production-ready.
Find pixel dimensions for an A4 or Letter print
Click the A4 or US Letter preset, set DPI to 300, and get the exact pixel dimensions (2481×3508 for A4 at 300 DPI). Use this number when creating a Photoshop canvas, sizing a design for your vendor, or exporting from Illustrator for print.
Check if my image has enough resolution for a poster
Enter your image's pixel dimensions, pick the intended poster size at 150 or 300 DPI. The quality verdict tells you whether you're in production-ready territory. If not, enlarge the source with our AI Image Upscaler before sending to the printer.
Calculate DPI for textile and fabric print
Fabric printing typically requires 300 DPI for sharp motif detail; some high-resolution digital textile workflows ask for 600 DPI. Use the calculator to work backwards from your repeat size to the required pixel count, then make sure your pattern file hits the target. When exporting for print, send it to the Format Converter for a TIFF with embedded 300 DPI metadata.
Size a banner or wide-format print
For 24×36 and larger, 150 DPI is usually sufficient because viewing distance is greater. The calculator's 150 DPI preset lets you size files down without sacrificing visible quality — a 24×36 at 150 DPI needs 3600×5400 pixels vs 7200×10800 at 300 DPI, a 75% reduction in working file size.
Check screen vs print size for web-to-print
A 1920×1080 screen image prints at 6.4×3.6 inches at 300 DPI, or 26.67×15 inches at 72 DPI (with visible pixelation). Use this tool to verify that web images have the resolution headroom to also print, or to understand why a web-sized image looks bad on paper.
When to use 72, 150, 300, or 600 DPI
Screen only
Web images, email attachments, social posts, presentation slides. Will look obviously pixelated if printed — never use for print.
Draft / wide-format
Draft proofs, trade-show banners, billboards, large-format signage viewed from distance. Acceptable for some low-end textile runs.
Production standard
Commercial magazines, brochures, packaging, fabric prints, fine art, product photography. The commercial-print default — pick this unless instructed otherwise.
Premium print
High-end photo books, fine-art reproductions, gallery prints, and high-resolution textile when the vendor specifically requests it.
Four steps, no signup
Pick a direction
Pixels → print size if you already have an image and want to know how big it'll print. Print size → pixels if you know the final print dimensions and need to figure out the required resolution.
Enter your numbers
Type the pixel dimensions of your image or the physical width and height of your intended print. Use the paper presets (A4, Letter, 12×12) to skip typing when the target matches a standard.
Choose a DPI
72 for screen-only work, 150 for draft prints, 300 for standard commercial print (brochures, magazines, textiles), 600 for high-end photo books and fine art. Custom DPI input for anything else.
Read the result
Pixels mode returns print size in both inches and centimetres plus a quality verdict. Inches mode returns the exact pixel dimensions you need — use this number when sizing Photoshop canvases or AI upscaler outputs.
Built for real print production
Every online DPI calculator gives you the math. Ours is bidirectional, has paper presets, shows a quality verdict, and connects to the tools that fix insufficient resolution.
Bidirectional conversion
Most calculators only go one way. Ours converts pixels → inches AND inches → pixels, with a single click to switch.
Paper presets built in
A4, A3, US Letter, Tabloid, 12×12 square, 24×36 banner — one click loads the size. Saves typing and avoids rounding errors.
Quality verdict
At a glance: Production-ready (300+), Draft (150+), or Web-only (<150). No guessing whether your numbers are good enough.
Connects to our upscaler
If your image doesn't have enough pixels, one click sends you to the AI upscaler at the right scale. Fixed workflow for low-res-to-print.
Frequently asked
Q.What DPI do I actually need for print?
Q.My image is 3000×2000 px — how big can I print it?
Q.What's the difference between DPI and PPI?
Q.Does DPI change file size or image quality?
Q.What DPI for textile printing?
Q.What DPI for photo books or fine-art prints?
Q.Is this tool really free? Do you store my numbers?
Q.Can I use the output for commercial print?
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