Paper Size Lookup

• Paper size reference tool covering the full range of sizes — ISO A/B/C series, North American standards (Letter, Legal, and more), photo sizes, and special specifications
• Each size shows both millimeters (mm) and inches (in) plus its aspect ratio; tap a card for common uses. Filter by category, search by name, and copy any size with one click — a handy reference for designers and print professionals

1. Open the tool page; no download or installation needed
2. Search by name in the box at the top, or pick a category from the dropdown (All / ISO A/B/C / North American / Photo / Special)
3. Click any size card to see its dimensions, aspect ratio, and common uses, then hit Copy to save that size's details

• This tool is completely free and requires no sign-up
• Everything runs locally in your browser — your data never leaves your device

Free online paper size lookup tool, supports full series of paper size comparison including ISO A/B/C series, North American standards, photo sizes, special specifications, etc. Provides dual unit display in millimeters (mm) and inches (in), aspect ratio calculation, common usage explanations, an essential paper specification reference tool for designers and printing professionals.

Open the tool page; no download or installation needed Search by name in the box at the top, or pick a category from the dropdown (All / ISO A/B/C / North American / Photo / Special) Click any size card to see its dimensions, aspect ratio, and common uses, then hit Copy to save that size's details

This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device

Yes, Paper Size Lookup is completely free. No download or installation required — it runs right in your browser.