What DPI should I use for printing?

300 DPI is the industry standard for commercial offset and digital print. Photo labs and inkjet printers often work well at 240–300 DPI. Large-format prints viewed from a distance (banners, posters) can use 100–150 DPI without visible quality loss.

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. DPI (dots per inch) is a printer property describing ink dot density. In practice, both terms are used interchangeably when calculating required image resolution for print.

My image has fewer pixels than required — can I just upscale it?

Software upscaling (including AI upscalers) can help, but genuine detail cannot be created from nothing. For critical print work, always use a source image that meets or exceeds the required pixel count. For screen use, upscaling is generally acceptable.

What resolution do I need for web and screen use?

Screens are typically 72–96 PPI, but modern high-density (Retina) displays can be 200–400 PPI. For sharp display on HiDPI screens, multiply the CSS pixel dimensions by 2 or 3 to get the required image pixel dimensions.

How is the megapixel count calculated?

Multiply the required width in pixels by the required height in pixels, then divide by 1,000,000. For example, 3508 × 4961 pixels = ~17.4 MP. This number is useful for comparing against camera sensor specs.

Image Resolution Calculator

Name: Image Resolution Calculator
Availability: InStock
Author: Nham Vu

Enter a physical size and DPI/PPI to find the minimum pixel dimensions your image needs to print or display at that quality.

Output Size

Unit

Width

Height

DPI / PPI

72–96 for screen, 150 for draft print, 300 for commercial print, 600 for fine art

DPI Presets

Size Presets

Required Image Size

2550

Width (px)

3300

Height (px)

8.4

Megapixels

17:22

Aspect Ratio

~25 MB

Est. TIFF Size

Quality Tiers at This Size

Size Diagram (scaled)

8.5×11

Output size

Copied!

Summary

Enter a physical size and DPI/PPI to find the minimum pixel dimensions your image needs to print or display at that quality.

How it works

Enter the physical output width and height (inches, cm, or mm).
Select or type your target DPI (dots per inch) — 300 for print, 72–96 for screens.
The tool multiplies each dimension by the DPI to get the required pixel count.
Results show minimum pixel dimensions, total megapixel count, and typical file size estimate.
Use the presets panel for common standards like A4 at 300 DPI or social media sizes.

Use cases

Check if a stock photo is large enough to print at a specific size without quality loss.
Determine the pixel dimensions required before commissioning artwork from an illustrator.
Set the correct canvas size in Photoshop before starting a print project.
Verify a client-supplied image meets minimum resolution requirements for a brochure.
Calculate the right export size from a design tool like Figma or Sketch.
Compare quality tiers — draft (150 DPI), standard (300 DPI), and high-end (600 DPI).

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu