How to Use the Pixel Print Size Calculator

1 Pixels to Print Size

Input digital resolution(px), select dpi/ppi. It will calculate print size at that density. You can switch among inches, cm, or mm.

2 Print Size to Pixels

Input print size, units (in/cm/mm), dpi. It will calculated the corresponding resolution. Prize size x DPI = Resolution.

3 Pixel Aspect Ratio

Input resolution (px), it will auto calculate the integer aspect ratio. You can also select a template for calculation.

4 Resolution Scale

Input the multiple factor to scale the resolution. e.g. (400, 500) x0.5=(200,250) px. Hit Reset to clear everything.

5 Image Size Finder

Load an image to analyze its resolution, aspect ratio, total pixels, and the target print size at the designated dpi.

6 DPI/PPI

Select DPI for print size calculation. Go 300dpi for high quality print or 150dpi for billboard viewing from a distance.

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Pixel to Print Size Chart and Typical Format


This Pixel to Print Size Chart provides a quick, practical reference for matching digital image resolution to common print formats. By aligning pixel dimensions with recommended DPI and typical use cases, it helps ensure your images print sharp, proportionate, and fit for their intended purpose.

Format (W × H) Common Name Recommended DPI Typical Use Resolution
3.5 × 5 in Small Standard 300 Photo wallets, Greeting card inserts 1050 × 1500
4 × 6 in Standard Photo (4R) 300 Everyday prints, Photo albums 1200 × 1800
5 × 7 in Medium Print (5R) 300 Framed photos, Desktop display 1500 × 2100
8 × 10 in Portrait/Enlargement 300 Framed portraits, professional portfolios 2400 × 3000
8.5 × 11 in US Letter Size 300 Documents, presentation, artwork 2550 × 3300
11 × 17 in Ledger/Tabloid 250 Small posters, spreadsheets prints, architectural drawings 2750 × 4250
16 × 20 in Poster/Wall Art 200 Wall displays, art reproductions 3200 × 4000
24 × 36 in Large Format Poster 150 Event promotion, large retail graphics 3600 × 5400
48 × 72 in Banner/Exhibition 100 or less Billboards, trade show displays (viewed from a distance) 4800 × 7200+

Printable Wall Art Size Guide

Not sure which print size will look best on your wall? This handy wall art size guide shows the most common sizes compared against a standard 80 inch sofa for scale. You can also download this image for quick reference when planning your prints.

Digital Download

Pixel Resolution Knowledge Base

Units of Measurement

Inches and centimeters: 1 inch equals 2.54 cm.

Pixels: the smallest unit in a digital image.

DPI (dots per inch): how many ink dots a printer puts down in an inch.

PPI (pixels per inch): how many pixels fit into an inch of a digital or printed image.

Common DPIs

600 DPI: When fine details are critical for restoration, exhibition-quality prints

300 DPI: the gold standard for sharp photo prints, postcards, and albums.

200–250 DPI: fine for medium prints such as posters up to about 20 × 30 inches.

150 DPI: acceptable for large posters or wall art.

72–100 DPI: used for very large prints or banners that are viewed from a distance.

File Formats

JPEG: small files, good for everyday prints, but lossy compression can show artifacts.

TIFF: large files, keeps all details, often required by professional printers.

PNG: ideal for graphics, logos, or anything needing transparency.

Frequently Asked Questions

1. What a pixel to print size calculator does?

A Pixel to Print Size calculator converts a digital image's resolution (pixels) into a physical print size (inches, cm, or mm) based on a selected DPI.

Formula: Print size (inches) = Pixels ÷ DPI

With this calculator, you can check how large a photo can be printed without quality loss. Generally, 300 DPI is recommended for high-quality prints. For instance, if your digital image is 2400 x 3000 resolution, you can expect the maximum print size to be 8 x 10 inches (2400 ÷ 300 and 3000 ÷ 300).

If you want to print at a larger physical size, such as 16 × 20 inches, while keeping the same digital resolution at 2400 x 3000, then the density is only 150 DPI. To maintain 300 DPI high-quality printing, you need to upscale the digital image to 4800 x 6000.

2. What a print size to pixel calculator does?

A Print Size to Pixel calculator works in reverse: it tells users how many pixels are required to achieve a desired physical print size at a specific DPI.

Formula: Pixels = Print size (inches) x DPI

Here are some primary use cases: Preparing files before designing or exporting, checking if an image must be upscaled, setting correct canvas size in Photoshop, Illustrator, Procreate, etc.

3. Why does my image look blurry when printed?

This usually happens when the image does not have enough pixels for the chosen print size. If you increase print size without increasing resolution, the printer stretches existing pixels, causing blur.

Use the Print Size to Pixels calculator to confirm whether your image meets the required DPI. If the resolution is not enough, you can use Aiarty Image Enhancer to upscale photos and images to the desire resolution, with option to adjust AI enhancement strength for natural, high-fidelity results.

4. How large can I print my photo?

Depends on viewing distance and the print quality you prefer (measured by DPI), you can calculate the recommended print size according to the digital image resolution (pixels). In most cases, you can select 300DPI, enter the digital resolution, the tool above will calculate the recommended print size.

When viewing from distance, 200DPI is acceptable, then the print size will be larger for the same digital resolution.

5. How to use the pixels to inches converter?

Go to the calculator above, input digital resolution (width x height), and select the desired DPI/PPI. The pixel to print size calculator will output the print size in inches. You can also switch unit to centimeters or millimeters.

6. How to use the image size finder?

Drag and drop image to the Analyze Image box above. It will display image resolution, aspect ratio, and total pixels (Megapixel - Mpx). With the designated DPI/PPI, it will also calculate the recommended print size.