Paper Size Converter
Look up ISO A, B, and C series plus US Letter, Legal, and Tabloid sizes in mm, inches, points, and pixels.
ISO and US paper dimensions in print and pixel units
ISO 216 A, B, and C series sizes follow √2 aspect ratios; North American Letter, Legal, Tabloid, and Executive sizes use inch-based definitions. This reference converts each portrait size into millimeters, centimeters, inches, PostScript points (72 per inch), and pixels at your chosen DPI, useful for print layouts, PDF export, and image resolution planning.
Common uses
- Pick pixel dimensions for full-bleed A4 artwork at 300 DPI before sending to a print shop.
- Compare US Letter against A4 when designing international document templates.
- Look up point sizes for LaTeX, InDesign, or CSS
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To convert arbitrary pixel widths and DPI into print size, use DPI PPI Size Converter.
Frequently Asked Questions
Which DPI should I use?
300 DPI is standard for commercial offset and inkjet photo printing. 72 DPI matches classic screen points; adjust the field to match your export preset.
Are landscape sizes included?
Dimensions are listed in portrait orientation. Swap width and height for landscape (for example A4 landscape is 297 × 210 mm).
Where do the millimeter values come from?
ISO A/B/C sizes use the standard 841 mm × 1189 mm A0 base with halving on the long edge. US sizes use official inch measurements converted to millimeters.
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