How to Say 30 in English: Visual Phonetics, Audio Cues, and the 21 to 30 Cheat Sheet
By Maya Lin-Takahashi
Mastering cardinal numbers is half the equation. You will also use 30 in calendar dates, birthdays, and sports statistics, which require ordinal numbers. In English, the ordinal form of 30 is thirtieth (/ˈθɜːrtiəθ/).
Writing dates presents distinct orthographic rules. In American English, speakers write "April 30th" or "April 30," yet pronounce it as "April thirtieth." In British usage, the inverted order "the 30th of April" remains standard. Notice the suffix shift: the final "-y" in thirty transforms into "-ieth," introducing an extra syllable (/i.əθ/) with a second soft "th" sound at the end.
Colloquial speech also spawns phrases like "thirty-something," describing someone aged 30 to 39. In finance and pricing, fluent speakers rarely pronounce exact change with full syllables. An item costing $30.50 gets parsed as "thirty fifty," stripping conjunctions completely to accelerate transaction speed.
Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.
