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~杯はい (hai) Counter

~杯はい counter is used for cupfuls and glassfuls - a cup of coffee, a glass of water, a mug of beer. Importantly, it counts the contents of the container, not the container itself, so it also covers bowls of rice, ramen and other noodles, and even scoops served in a dish. (To count the empty cups or glasses as objects, you would use ~個こ (ko).)

Like ~本ほん, the reading shifts between はい, ぱい and ばい: ぱい after 1, 6, 8, 10, 100 (the small っ numbers), and ばい after 3, 1000, 10000 and in 何杯なんばい.

No.	Kana	Kanji
1	いっぱい	一杯
2	にはい	二杯
3	さんばい	三杯
4	よんはい	四杯
5	ごはい	五杯
6	ろっぱい	六杯
7	ななはい	七杯
	しちはい
8	はっぱい	八杯
	はちはい
9	きゅうはい	九杯
10	じゅっぱい	十杯
	じっぱい
11	じゅういっぱい	十一杯
12	じゅうにはい	十二杯
13	じゅうさんばい	十三杯
20	にじゅっぱい	二十杯
	にじっぱい
21	にじゅういっぱい	二十一杯
100	ひゃっぱい	百杯
1000	せんばい	千杯
10 000	いちまんばい	一万杯
How many	なんばい	何杯

Check out other counters.