にもなる

also become; amount to

→ に
phrase Rare #24,115
also become; amount to に marks a resulting state or outcome, も adds “also” or “even,” and なる means “become.”
JA: 彼は来年大学生にもなる。
EN: He’ll also become a university student next year.

君は大統領にもなる事が出来るよね。

You could even become president, couldn't you?

金にもなるしね

It can make money too, you know.

— es[エス] (2001)

もう何時間にもなるぞ

It's been hours already.

— ロード・オブ・ザ・リング/二つの塔 (2002)

それなら彼女の助けにもなるわ。

That would help her, too.

日記をつけることで日々の生活に対する反省の機会を得ることにもなる。

Keeping a diary also gives you an opportunity to reflect on your daily life.

控えめに言ってね私は著名な女性経営者で恐らく政治的な話にもなる

Put it modestly: I’m a prominent female business leader, and this will probably become a political issue as well.

— ブゴニア (2025)

さすがに少しばかり不安にもなる額だ。

It’s enough to make even me a little uneasy.

きっといじめの対象にもなる

They’ll probably get bullied too.

— Departures (2008)

そんなことって…大学生にもなるってのに相変わらずガキだねお前は

Seriously? Even though you're in college, you're still such a kid.

— 天気の子 (2019)