PX to DPI (PPI) Converter

PX → DPI (PPI) Converter

Image Width (px)

Image Height (px)

Enter your image pixel dimensions.

Mode

Compute DPI from physical size Compute physical size from DPI

Units

Target Width

Target Height

Provide the intended print/display size to get DPI (PPI). Use inches/cm/mm.

DPI (PPI) Result:

            X-axis: —,
            Y-axis: —,
            Effective (min): —
          

Print Guideline:

—

💡 Quick Presets:

📊 Quick Reference

Print Size from your pixels

            @150 DPI: —

            @240 DPI: —

            @300 DPI: —

            @350 DPI: —

DPI needed for common sizes

            4×6 in: —

            5×7 in: —

            8×10 in: —

            A4 (8.27×11.69 in): —

Live Preview (relative scale for print size)

The box approximates physical size proportionally (not true-to-life on screens).

Preview

PX to DPI Converter

DPI (Dots Per Inch) measures the number of printed dots that fit into one inch. It’s a key concept in printing, scanning, and digital imaging. While pixels (px) represent on-screen units, DPI defines the print density.

For example:

A 300 DPI image is considered print quality.
A 72 DPI image is typically used for web and screens.

Why Use a PX to DPI Converter?

Pixels and DPI are connected through image dimensions and print size. A converter helps you:

Calculate the print size of an image based on pixels and DPI.
Ensure designs meet printing standards (magazines, posters, business cards).
Adjust images for web vs print output.
Save time compared to manual math.

How to Use the Converter

Enter your image pixel dimensions (width & height).
Input your target DPI value (commonly 72, 150, or 300).
Get the equivalent print size (inches or cm).

Example:

Image: 3000 × 2400px
DPI: 300
Print size: 10 × 8 inches

Formula:

Inches = Pixels ÷ DPI

PX to DPI Conversion Examples

Pixels (Width)	Pixels (Height)	DPI	Print Size (inches)
1200px	800px	300	4 × 2.67 in
2400px	1800px	300	8 × 6 in
3000px	2400px	300	10 × 8 in
600px	400px	72	8.3 × 5.5 in

Best Practices for DPI

Web graphics: 72 DPI is sufficient (screens display pixels, not DPI).
Print documents: Use at least 300 DPI for sharp results.
Large posters: 150 DPI may be acceptable since viewers are farther away.
Scanning photos: Scan at 300–600 DPI for high-quality reproduction.

FAQs

Does increasing DPI increase image quality?
No. Increasing DPI without adding pixels won’t improve quality — it only changes how the existing pixels are mapped when printed.

What is the standard DPI for printing?
Most professional printing uses 300 DPI.

Is DPI the same as PPI?

DPI (dots per inch) refers to printing.
PPI (pixels per inch) refers to digital images/screens.

Can I convert DPI without changing pixels?
Yes. DPI affects print size but not the total number of pixels in an image.What DPI should I use for posters or billboards?
Since viewers are farther away, 150–200 DPI is often enough for large prints.