How do you pronounce "quantum"?

In American English: /ˈkwɑːntəm/ (KWAHNT-uhm). In British English: /kwˈɒntəm/ (KW-ont). In Canadian English: /ˈkwɑːntəm/ (KWAHNT-uhm). In Australian English: /kwˈɒntəm/ (KW-ont).

Is "quantum" pronounced differently in American and British English?

Yes. In American English it's pronounced /ˈkwɑːntəm/ (KWAHNT-uhm), while in British English it's /kwˈɒntəm/ (KW-ont).

How to Pronounce "quantum"

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quantum

regional

/ˈkwɑːntəm/

KWAHNT-uhm

Syllable Breakdown

kwɑːntquan·əmtum

Source

90%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14