покупать vs купить

pokupat' vs kupit' — buy regularly/process vs buy once

What it really means

Покупать is imperfective: buying as a process, habit, or general activity. Купить is perfective: buy one item or complete one purchase. The choice follows the usual Russian aspect contrast rather than a difference in the goods bought.

Use покупать with frequency and routines; use купить for a completed purchase, a request, or a future one-time plan.

Examples in natural speech

Мы покупаем хлеб здесь каждую неделю.
We buy bread here every week.
Она любит покупать книги.
She likes buying books.
Я купил билеты вчера.
I bought the tickets yesterday.
Купи, пожалуйста, молоко.
Please buy milk.
Завтра я куплю новый телефон.
Tomorrow I will buy a new phone.

Common mistakes

Do not use покупать for a completed one-off result such as “I bought it yesterday”; use купил. Conversely, покупать is right for “Where do you buy groceries?”

Memory tip

Купить closes one purchase; покупать leaves the buying open, repeated, or in progress.

Frequently asked questions

What is the future of покупать?

Я буду покупать; it often suggests a process or repeated buying.

How do I say buy this?

Купи это for one completed purchase.

Can купить mean shop?

For the activity of shopping, prefer покупать or ходить за покупками.

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