The print-size formula
Divide the width and height in pixels by the target pixel density. The result is the physical dimension in inches.
Print width in inches = pixel width ÷ DPI
Centimeters = inches × 2.54
Print & design
Print Size Calculator
Convert pixel dimensions and target DPI into physical print size in inches and centimeters before you send artwork to production.
- Free
- No image upload
- Instant browser calculation
Image dimensions
Enter pixels and target DPI
Physical size is calculated as pixels ÷ DPI. No image upload is required.
Quick DPI presets
This calculator uses dimensions only. Your artwork is not uploaded or stored.
Understand the conversion
Pixels define the file. DPI defines the physical size target.
The same pixel file can be printed at different physical sizes. Raising the target pixel density makes the print smaller; lowering it makes the same pixels cover more inches or centimeters.
Example: 4500 × 5400 pixels at 300 DPI
4500 ÷ 300 = 15 inches and 5400 ÷ 300 = 18 inches. In metric units, that is 38.10 × 45.72 centimeters.
300, 200, 150, or 72 DPI?
300 DPI
A common high-detail target for prints viewed closely.
200 DPI
A strong density that can work well in many print workflows.
150 DPI
Often used for larger output or greater viewing distance.
72 DPI
Low for close-view printing; commonly associated with screen-era sizing.
DPI and PPI are not technically the same
PPI means pixels per inch and describes digital image density. DPI means dots per inch and technically describes printer output. Print providers often use “DPI” as shorthand when specifying artwork resolution, so this calculator keeps that familiar label. The conversion itself treats the value as pixels per inch.
A calculated size is not a print-quality guarantee
Real output also depends on the source artwork, scaling method, printer, ink, substrate, print process, sharpening, and viewing distance. Always compare the result with your production provider's current file requirements.
FAQ
Print size calculator questions
How do I calculate print size from pixels and DPI?
Divide each pixel dimension by the target DPI. A 4500 × 5400 pixel image at 300 DPI prints at 15 × 18 inches.
Is 300 DPI always required for printing?
No. 300 DPI is a common target for detailed close-view printing, but larger-format work may use lower pixel density depending on viewing distance, print process, substrate, and provider requirements.
What is the difference between DPI and PPI?
PPI describes pixels per inch in a digital image, while DPI technically describes printer dots. Many print workflows use DPI informally for image-resolution requirements, so this calculator keeps the familiar DPI label while treating the number as pixels per inch for size conversion.
Does MerchQuill upload my image?
No. This tool only needs the pixel width, pixel height, and target DPI you enter. No image file is uploaded or stored.
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