Indicates that quantities or degrees are approximately equal; about the same.
彼と私の年は同じくらいだ。
He and I are about the same age.
この二冊の本はページ数が同じくらいだ。
These two books have about the same number of pages.
明日の気温は今日と同じくらいらしい。
Tomorrow's temperature is expected to be about the same as today's.
コーヒーと紅茶、どちらが高い？—だいたい同じくらいだよ。
Which is more expensive, coffee or tea? — They're about the same.