# when's vs who's

> English confusable word pair

## The two words

### when's
*contraction · IPA /wɛnz/ · frequency rank #22,550*
Contraction of when + is.

### who's
*contraction · IPA /huːz/ · frequency rank #1,512*
Who is.

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