International paper and envelope size reference

Tool powered by Paper Sizes on Paper Sizes.

Paper size chart: envelope sizes, photo sizes, legal and tabloid dimensions, A5 paper, ISO A/B series, and mm or inch conversions in the browser.

What is Paper Sizes?

Paper size chart: envelope sizes, photo sizes, legal and tabloid dimensions, A5 paper, ISO A/B series, and mm or inch conversions in the browser.

What Paper Sizes offers

Paper size chart for envelope sizes, photo sizes, legal and tabloid dimensions, A5 paper, and mm or inch conversion.

  • Envelope sizes and dimensions

    International and US envelope tables for mail, packaging, and print templates.

  • Photo sizes and picture sizes

    Photography format dimensions in mm and inches for print and digital workflows.

  • Legal, Letter, and tabloid paper

    Confirm legal size paper dimensions, US Letter, and tabloid paper size against A3 and related ISO entries.

  • A5 paper and ISO A/B series

    A4, A5, A3, and B formats with width and height for notebooks, flyers, and booklet imposition.

  • Paper size chart and unit conversion

    Convert between mm, cm, inches, and points for design and production handoff.

How to use this reference

Open the matching Paper Sizes chart—envelopes, legal, A5, or photography—then copy dimensions into your layout tool.

  1. Pick the right family

    Start with envelopes, ISO A, US, or photography depending on your deliverable.

  2. Open the matching chart page

    Use in-page navigation to envelope sizes, legal dimensions, or A5 paper entries.

  3. Copy dimensions in your unit

    Paste mm or inch values into InDesign, Figma, or production briefs.

  4. Add bleed and margins separately

    Paper dimensions are trim size—extend artboard for bleed per your print vendor.

  5. Open Paper Sizes in a new tab if needed

    Compare pages and deep links may work better outside a restricted iframe.

Tips for accurate print setup

Standards differ by region.
  • 01

    Confirm region before layout

    A4 and US Letter are not interchangeable—pick the standard your audience expects.

  • 02

    Match units to the tool

    Use mm for print specs; px only when converting at a stated DPI.

  • 03

    Check portrait versus landscape

    Swap width and height when orientation changes even if the format name stays the same.

  • 04

    Document envelope and insert pairs

    Folded inserts must fit envelope sizes—verify both in the chart.

Who this is for

Print, product, and documentation workflows.

  • Print and packaging designers

    Set trim sizes, envelopes, and dielines from a trusted chart.

  • Document template authors

    Configure Legal, Letter, or A4 templates with correct paper dimensions.

  • Photography and lab workflows

    Reference photo sizes before ordering prints or building galleries.

  • Global product teams

    Compare international paper sizes when shipping multi-region collateral.

Why open Paper Sizes

Official reference without replacing the publisher site.

  • Stable directory path

    Link `/papersizes` in specs; Hero attribution points to Paper Sizes.

  • Broad format coverage

    Envelopes, ISO, US, and photography in one publisher reference.

  • This site does not host the database

    Charts update on Paper Sizes; we include and document honest use.

Frequently Asked Questions

Quick answers about this tool—open a question to read more.