How do I know if my photo has high enough resolution for printing?

For professional magazine and photo prints, 300 DPI (dots per inch) is the industry standard. A 3000 x 2000 pixel image can be printed cleanly at 10 x 6.6 inches at 300 DPI. For larger viewing distances like posters, 150 DPI is acceptable.

What is the difference between image resolution and DPI?

Resolution refers to the total number of pixels in your digital image (e.g., 1920 x 1080 = 2.07 Megapixels). DPI (Dots Per Inch) is a printing density metric that tells a printer how many of those pixels to squeeze into an inch of paper.

Can I check image dimensions without uploading the photo online?

Yes. This tool reads the image header and pixel buffer locally on your device via the HTML5 File and Image APIs. Your pictures are never sent to external servers.

How are megapixels calculated?

Megapixels are calculated by multiplying pixel width by pixel height and dividing by 1,000,000 (e.g., 4000 x 3000 = 12,000,000 pixels = 12.0 Megapixels).

Which image file formats can I inspect?

You can inspect PNG, JPG, JPEG, WebP, AVIF, BMP, GIF, SVG, and ICO files.

Image Resolution & DPI Checker

Check image dimensions (width/height), megapixels, aspect ratio, and print sizes at 300 DPI / 150 DPI online.

100% free
Private in browser
No signup
No watermarks

Drop or Select Any Image

Resolution

3840 × 2160

pixels

Megapixels

8.29 MP

million pixels

Aspect Ratio

16:9

(1.78:1)

Orientation

Landscape

↔ Horizontal

Physical Print Dimensions by DPI DensityCalculated from native pixels

300 DPI (Magazine / Photo)

12.8″ × 7.2″

32.5 × 18.3 cm

150 DPI (Poster / Wall Art)

25.6″ × 14.4″

65.0 × 36.6 cm

72 DPI (Standard Web Screen)

53.3″ × 30.0″

135.5 × 76.2 cm

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About Image Resolution & DPI Checker

The Image Resolution & DPI Checker lets you inspect full technical metrics for any photo or graphic instantly in your browser. Find out exact pixel dimensions, camera megapixels, simplified aspect ratios (16:9, 4:3, 1:1), file weight, and calculate optimal physical print dimensions in inches and centimeters for 300 DPI fine art or 150 DPI poster printing.

How to use Image Resolution & DPI Checker

Drop or select any image file (PNG, JPG, WebP, SVG, GIF, AVIF, or TIFF).
Instantly view pixel dimensions, total megapixels, and aspect ratio.
Check physical print size tables calculated at standard 300 DPI, 150 DPI, and 72 DPI.
Copy the comprehensive image specifications report to clipboard.

Key features

Instant detection of native pixel width, height, and megapixel count (MP)
Calculates simplified aspect ratios (e.g. 16:9, 4:3, 3:2, 1:1)
Physical print dimension calculations at 300 DPI (magazine/fine art) and 150 DPI (posters)
Zero file uploads — 100% private in-browser metadata extraction

Frequently asked questions

How do I know if my photo has high enough resolution for printing?: For professional magazine and photo prints, 300 DPI (dots per inch) is the industry standard. A 3000 x 2000 pixel image can be printed cleanly at 10 x 6.6 inches at 300 DPI. For larger viewing distances like posters, 150 DPI is acceptable.
What is the difference between image resolution and DPI?: Resolution refers to the total number of pixels in your digital image (e.g., 1920 x 1080 = 2.07 Megapixels). DPI (Dots Per Inch) is a printing density metric that tells a printer how many of those pixels to squeeze into an inch of paper.
Can I check image dimensions without uploading the photo online?: Yes. This tool reads the image header and pixel buffer locally on your device via the HTML5 File and Image APIs. Your pictures are never sent to external servers.
How are megapixels calculated?: Megapixels are calculated by multiplying pixel width by pixel height and dividing by 1,000,000 (e.g., 4000 x 3000 = 12,000,000 pixels = 12.0 Megapixels).
Which image file formats can I inspect?: You can inspect PNG, JPG, JPEG, WebP, AVIF, BMP, GIF, SVG, and ICO files.