ができたら

if/when ... is ready

→ が
phrase Rare #19,998
if/when ... is ready Used after a noun to mean “if/when ... is ready, finished, or possible.” The exact meaning depends on the noun and context.
JA: 準備ができたら出発しましょう。
EN: When we're ready, let's leave.

夕飯の支度ができたら呼ぶ

I’ll call you when dinner’s ready.

子どもができたら分かるよ

You’ll understand once you have kids.

用意ができたらすぐ電話してね

Call me as soon as you're ready.

あなたとあのレストラン食事ができたらよかったのに

I wish I could have had a meal with you at that restaurant.

子どもができたら分かるさ

Once you have kids, you'll understand.

用意ができたらかけて

Let me know when you're ready.

余裕ができたらすぐにでも新しい車を買うつもりです

As soon as I can afford it, I plan to buy a new car.

支度ができたら行きましょう

Let's go once you're ready.

から出してすぐにこれをやり遂げることができたら--ああなんてことだ

If I could accomplish this right out of the box—oh my goodness.

— ウィキッド ふたりの魔女 (2024)