/convert/a4-to-inches/ Convert A4 (mm) to inches instantly. Includes a reference table and formula. article A4 (mm) to inches Converter — 247QuickTools ,{ "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [".tool-intro", ".info-gain-section"] }
📄 Paper Sizes

A4 (mm) to inches Converter

Convert A4 (mm) to inches instantly. Includes a reference table and formula.

Quick answer: To convert A4 (mm) to inches, multiply by 0.0393701. For example, 1 A4 (mm) = 0.0393701 inches. Use the calculator below for any value.
A4 (mm) to inches
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Common conversions
A4 (mm) inches
Formula:

How to convert A4 (mm) to inches

1

Enter your value

Type the number of a4 (mm) you want to convert into the left box. The result in inches appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — inches to A4 (mm). Your current value carries across so you don't have to re-enter anything.

3

About A4 (mm) and inches

A4 paper is 210 × 297 mm. One mm = 0.0394 inches. A4 is 8.27 × 11.69 inches.

💡 Did you know?

A4 = 210 × 297 mm = 8.27 × 11.69 inches. A4 and US Letter (8.5 × 11 in) are frequently confused in international printing. A4 is narrower but taller. Printing A4 content on Letter paper: content fits width but gets cut off at the bottom. Most home printers in the UK are set to A4 by default.

📊 Common conversions at a glance
A4 (mm) inches
210 8.268
297 11.69
420 16.54
594 23.39
841 33.11
1189 46.81
Reviewed for 2026. A4 (mm) ↔ inches conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.