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📄 Paper Size Guide

Look up A4, Letter, Legal, ISO A/B/C, photo, and common paper sizes with millimeter, inch, and pixel references for print and PDF layout.

A4
210 × 297 mm
Width × Height
Custom Size Matcher

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Look up ISO A/B/C series, North American Letter and Legal, JIS B, Chinese traditional sizes, and common photo sizes. The tool shows millimeters, inches, and pixel dimensions for a custom DPI, plus visual comparison, printable-area calculation, custom-size matching, and grouped reference tables. Use it for design files, print layout, PDF page setup, office documents, and photo preparation. A4 and Letter are close but not identical, and portrait or landscape changes orientation rather than the underlying paper size. Pixel dimensions depend on DPI and do not guarantee print quality by themselves. For bleed, margins, binding, or commercial printing, confirm the printer template and device requirements.