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A paper size to pixels converter based on the Chinese GB/T 148-1997 standard, supporting DPI calculations for common sizes like A4 and A3.
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Designers and print professionals often need to convert physical paper dimensions into digital pixel sizes. Based on the Chinese National Standard GB/T 148-1997, this tool converts the millimeter dimensions of standard A-series and B-series paper into exact pixel values using your specified DPI (dots per inch). The tool processes standard paper sizes and outputs the corresponding width and height in pixels for your target resolution.
Q: What is the pixel size of an A4 paper at 300 DPI?
A: 2480 × 3508 pixels. This is calculated based on the standard A4 dimensions of 210 × 297 mm and 300 pixels per inch.
Q: What DPI is recommended for web design versus print design?
A: Web design typically uses 72 or 96 DPI to ensure display compatibility, while print design requires 300 DPI or higher to guarantee output quality. The exact requirement depends on the printing equipment and materials.
Please enter a positive integer for the DPI value; the recommended range is 72-600. Results are calculated based on standard dimensions, and actual output may vary slightly depending on device precision or software rendering. This tool does not store your inputted DPI values, ensuring your privacy is protected.
We recommend confirming the actual DPI requirements of your target device before use, as different output media have vastly different resolution needs. For example, screen displays usually only require 72-96 DPI, whereas high-end printing requires 300-600 DPI. As a typical example, an A4 size at 300 DPI corresponds to 2480 × 3508 pixels, while at 150 DPI, it corresponds to 1240 × 1754 pixels.
