Explanation
Expresses a limit or extent; 'it's only up to...', 'no more than...'.
Formation
Verb (dictionary/ない form) + までだ, い-Adjective + までだ, Noun + までだ
Detailed explanation
The ～までだ grammar point is used to emphasize that something goes only up to a certain limit or extent. It can also imply 'it's only this and nothing more.'
Examples
Kare to wa tomodachi made da. Sore ijou no kankei dewa arimasen.
With him, it's only friendship—nothing more.
Nomihoudai wa kuji made da. Sore ikou wa tsuika ryoukin ga hitsuyou da.
The all-you-can-drink deal is only until nine. After that, there's an extra charge.
Watashitachi no jouhou wa kinou made da. Sore ikou no appudeeto wa arimasen.
Our information only goes up to yesterday; there are no further updates.
Kare no chishiki wa chuugakusei reberu made da. Sore ijou wa rikai dekinai.
His knowledge is only at a junior-high level. He can't understand anything more advanced.
Practice
Grammar content sourced from hanabira.org.