# A3 vs A4

> French confusable word pair

## The two words

### A3
*noun · IPA \ɑ.tʁwa\ · frequency rank #20,334*
Format de papier mesurant 420 mm × 297 mm.

### A4
*symbol · frequency rank #18,920*
Format de papier de 210 mm × 297 mm.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/fr/vs/a3-vs-a4