What DPI should I use for printing?

Commercial offset printing and photo labs typically require 300 DPI at the final print size. Large-format inkjet (banners, posters viewed from 1+ meters) often accepts 100–150 DPI. Billboards and trade-show displays viewed from 3+ meters can work at 30–72 DPI. Screen display is 72–96 PPI.

What is the difference between DPI and PPI?

PPI (pixels per inch) describes digital image resolution — how many pixels exist per inch of the image file. DPI (dots per inch) technically describes printer output — how many ink dots the printer places per inch. In everyday usage for image prep, the two terms are used interchangeably, and this calculator treats them as equivalent.

My image DPI is below 300 — is the print ruined?

Not necessarily. DPI requirements depend on viewing distance. A photo at 200 DPI still looks excellent from arm's length. A poster at 100 DPI looks fine when viewed from 1–2 meters. Use the quality rating as a guide, not an absolute rule.

What is a megapixel and how does it relate to print size?

One megapixel = 1 million pixels. A 12 MP camera produces roughly 4000×3000 pixels. At 300 DPI that yields a maximum print of about 13×10 inches before quality drops. This calculator shows you those limits for any image size.

Does upscaling an image improve print quality?

No. Upscaling (increasing pixel dimensions in software) does not add real detail — it interpolates and can make prints look softer. Always start with a high-resolution original. AI-based upscalers like Topaz Gigapixel can recover some detail, but they are not a substitute for a high-resolution source.

DPI for Print Calculator

Name: DPI for Print Calculator
Availability: InStock
Author: Nham Vu

Enter your print dimensions and target DPI to get the required pixel count, or enter pixel dimensions and print size to find the effective DPI.

DPI / Resolution Calculator

Print Size

Width

Height

Target DPI

Common print sizes (inches)

Enter values and click Calculate

DPI Reference

DPI	Use case	Viewing distance
600+	Fine art / offset lithography	<15 cm
300	Photo lab, brochure, magazine	Arms length
150–200	Poster, foam board	~1 m
72–100	Large-format banner	2–4 m
15–30	Billboard / building wrap	10+ m

Summary

Enter your print dimensions and target DPI to get the required pixel count, or enter pixel dimensions and print size to find the effective DPI.

How it works

Choose a mode: "Find required pixels" to plan a shoot or check specs, or "Find effective DPI" to evaluate an existing image.
Enter the target print width and height in inches or centimeters.
For required-pixel mode, set the target DPI (300 for professional print, 150 for large-format, 72 for screen).
For effective-DPI mode, enter your image's pixel width and height.
The calculator multiplies (or divides) dimensions by the DPI value and returns results with a quality rating.

Use cases

Check whether a photo has enough resolution for a specific print size before ordering.
Find the minimum megapixels needed for a large-format banner or poster.
Determine the ideal canvas size when creating artwork for print in Photoshop or Illustrator.
Validate stock photo resolution against client print specifications.
Plan camera settings or scanning resolution for an upcoming print job.
Compare DPI requirements across standard print types: business cards, brochures, posters, and billboards.

Frequently Asked Questions

Last updated: 2026-07-15 · Reviewed by Nham Vu