also: さんじっぷん
noun
thirty minutes; half an hour
Standard time duration; used in schedules, cooking, travel, and everyday timing.
ここから駅まで歩いて３０分かかります。
It takes thirty minutes to walk from here to the station.
３０分後にまた電話します。
I'll call you again in thirty minutes.
Common numeric spelling; the reading さんじゅっぷん is the most frequent modern pronunciation.
Kanji spelling; also read as さんじっぷん, a less common but valid reading.
Kanji spelling with the older reading さんじっぷん; still used by some speakers.
Also means 'half an hour', but less common than ３０分 and slightly more formal or literary.
Compound of 三十 (さんじゅう, 'thirty') and 分 (ふん, 'minute'), with regular sound change from さんじゅうふん to さんじゅっぷん. The variant さんじっぷん reflects an older reading of 三十.