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Free Design Calculators

Paper Size Converter

Convert common ISO and US paper standards between millimetres, centimetres, and inches.

What this tool does

Translate common paper standards without manual unit conversion.

The converter includes ISO A0–A5 plus US Letter, Legal, and Tabloid dimensions.

It switches orientation and converts nominal dimensions between millimetres, centimetres, and inches.

Use the tool

Convert standard paper sizes

Choose a paper standard, unit, and orientation to see its dimensions.

Standard paper dimensions

ISO A-series dimensions are nominal millimetre standards. US Letter, Legal, and Tabloid values are converted from inches.

Converted paper size

210.0 × 297.0

mm · portrait

How to use it

Three quick steps

  1. 1Select the intended paper standard.
  2. 2Choose the output unit and orientation.
  3. 3Use the result with bleed, safe area, and printer-specific requirements.

Worked example

Prepare an A4 landscape document

Convert A4 to inches and switch orientation.

The tool reports the nominal landscape width and height.

FAQ

Questions about the paper size converter

Practical details about using the tool and understanding its result.

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From one asset to the whole workflow

Keep print specifications connected to the artwork and approval trail.

Draftroom keeps projects, creative files, feedback, revisions, and approvals connected in one workspace.

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