📄 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
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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.