Could vs May

When to use each in English, with meaning, register, and examples.

 CouldMay
Meaningused to express possibility or ability in the pastA month in spring.
CEFR levelA1A2
Usage notesUsed to talk about ability, requests, and possibilities. Considered neutral; avoid in very formal writing.Use 'May' when talking about the month in a date or events, but do not confuse with 'might', which expresses possibility.

Frequently asked questions: Could vs May

What's the difference between "Could" and "May"?

"Could" means: used to express possibility or ability in the past "May" means: A month in spring.

When should I use "Could" and "May"?

They can all be used in everyday English.

Are "Could" and "May" the same CEFR level?

"Could" is at A1, "May" is at A2 on the CEFR scale.

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