Translation guide
The English verb 'exist' is used to state that something is present in the world or in a particular place. In Japanese, the most natural way to express this depends on whether the subject is animate or inanimate, and the level of formality. Direct translation with 存在する is often too formal or philosophical for everyday use.
To say that something exists or is present, for non-living things, concepts, or locations.
The most common and natural way to say that an inanimate object, place, or abstract thing exists. Used in casual and neutral contexts.
There is a book on the desk.
There is a big park in this town.
Polite form of ある. Use in formal situations or with people you don't know well.
I have a question. (lit. There is a question.)
Formal, often used in philosophical, scientific, or written contexts. Sounds stiff in everyday conversation.
Many stars exist in the universe.
To say that a living thing exists or is present.
To express that something exists in a specific place.
Pattern: [location] に [subject] が ある (inanimate) / いる (animate). This is the standard way to say 'there is X in/at Y'.
There is beer in the fridge.
There are children in the park.
To talk about the existence of abstract things like problems, rules, or possibilities.
To emphasize the mere fact of existence, often in contrast to non-existence.
English speakers often try to translate 'exist' directly as 存在する, but in most everyday situations, ある or いる is much more natural. 存在する sounds overly formal or philosophical. Use it only when emphasizing the fact of existence itself, or in academic contexts.
ある is for inanimate objects, plants, abstract concepts, and sometimes for people when referring to their presence in a list or as an item (e.g., 兄弟が三人ある is possible but いる is more common). いる is for people, animals, and sometimes for things personified. When in doubt, use ある for things and いる for living beings.
The teacher is in the classroom.