Grammar › Intention › 〜にする
〜にする
"I'll have this one." The go-to phrase for choosing — picking off a menu, settling a plan, making the call yourself.
The short version
Put a noun before にする to mean "I'll go with / I choose that". It's a decision you're actively making. 私はコーヒーにする = "I'll have coffee"; これにします = "I'll take this one".
コーヒーにする — I'll go with coffee
これにします — I'll take this one (polite)
Choosing / ordering
The classic use: deciding what to have or which option to pick. Reach for it at a café, a shop, or any "which one?" moment.
アップルパイにしました。
I decided on apple pie. (the option you settled on)
にしよう — "let's make it…"
The volitional にしよう proposes a choice out loud — "let's go with…", "let's make it…".
じゃあ秋葉原にしよう。
OK then, let's make it Akihabara. (proposing the pick)
Watch out — にする vs になる
にする = you decide; になる = it just happens. Same に, opposite agency. 静かにする is "(I'll) make it quiet / keep quiet" — your choice. 静かになる is "it becomes quiet" — on its own. See なる.
| Form | Who acts | Meaning |
|---|---|---|
| 〜にする | you | decide on / make it… |
| 〜になる | nobody — it just does | become / turn out… |
🗣 For a whole action, use ことにする. にする takes a plain noun. To decide on a verb ("I've decided to quit"), nominalise it first with こと — やめることにする. That's the verb-clause cousin of this same pattern.
Next: つもり — intend to → · なる — to become → · All grammar
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