/convert/a-series-to-b-series/ Convert A series (size) to B series instantly with a reference conversion table. article A series (size) to B series Converter — 247QuickTools ,{ "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [".tool-intro", ".info-gain-section"] }
📄 Paper Sizes

A series (size) to B series Converter

Convert A series (size) to B series instantly with a reference conversion table.

A series (size) to B series
Common conversions
A series (size) B series
Formula:

How to convert A series (size) to B series

1

Enter your value

Type the number of a series (size) you want to convert into the left box. The result in b series 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 — B series to A series (size). Your current value carries across so you don't have to re-enter anything.

3

About A series (size) and B series

A series (size) and B series are common paper measurements.

Reviewed for 2026. A series (size) ↔ B series 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.