に当たる【にあたる】

The expression に当たる is used to indicate that something corresponds to, is equivalent to, amounts to, or falls on something else. It connects two things by showing their relationship or equivalence.

Corresponds to / Is equivalent to

Used to express that something is equivalent to or corresponds to something else, often when explaining relationships between people, concepts, or categories.

Amounts to / Equals

Used when expressing that a quantity or value is equivalent to another, especially in numerical or proportional contexts.

Falls on / Coincides with

Used to indicate that a date, year, or occasion coincides with a particular event or milestone.

Notes

The verb あたる当たる conjugates as a regular godan verb, so you will also see forms like にあたります当たります (polite), にあたった当たった (past), and にあたらない当たらない (negative). に当たる is different from the related expression に当たって, which means "on the occasion of" and is used when undertaking something new or important.