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Paper Size Converter

A4, Letter, A3, B5 and 60 more in mm, inches, points and pixels at any DPI.

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Quick Tool Overview

The Paper Size Converter gives the exact dimensions of more than 60 paper sizes — ISO A, B and C, JIS, Letter, Legal, ANSI and architectural — in millimetres, inches, points and pixels at any resolution.

What it does
Converts paper sizes into every unit
You give it
A paper size, orientation and DPI
You get back
mm, cm, inches, points, pixels and megapixels
Best for
Print design, PDFs and preparing artwork
Converters Free, unlimited use No sign-up Runs in your browser

About the Paper Size Converter

Designing for print means translating a paper size into whatever your software counts in. A layout program wants points, an image editor wants pixels at a resolution, a printer’s spec sheet is in millimetres and an American client talks about Letter and Tabloid in inches.

Choose any of more than 60 sizes — ISO A, B and C, the DL envelope, Japanese JIS B, North American Letter, Legal and Tabloid, ANSI and architectural sheets — pick portrait or landscape and a resolution, and every dimension is given at once: millimetres, centimetres, inches, PostScript points and pixels, with megapixels and the aspect ratio. The rest of that size family is tabled underneath for comparison.

Key features of the Paper Size Converter

Over 60 standard sizes

ISO A, B and C series, DL, JIS B, North American, ANSI and Arch sheets in one list.

Pixels at any DPI

Choose 72, 96, 150, 300 or 600 DPI, or type your own resolution.

Points for layout software

PostScript points are given for InDesign, Illustrator and PDF work.

Portrait or landscape

Orientation swaps every dimension, including the pixel size.

Whole family compared

The rest of the chosen size’s series is tabled underneath for quick comparison.

How to use the Paper Size Converter

  1. 1

    Choose the paper size

    Sizes are grouped by family: ISO A, B, C, JIS B, North American, ANSI and Arch.

  2. 2

    Set the orientation

    Portrait or landscape swaps width and height everywhere.

  3. 3

    Pick a resolution

    300 DPI for print, 96 for CSS pixels, 72 for PDF points — or enter a custom DPI.

  4. 4

    Read the dimensions

    Copy millimetres, inches, points or pixels, and compare against the rest of the family.

Frequently asked questions

2480 × 3508 pixels. A4 is 210 × 297 mm, which is 8.27 × 11.69 inches, multiplied by 300 dots per inch.

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