Is it “who” or “whom”?

“Who wrote this?”
“Whom did you send it to?”

Confused? Fair enough. They both sound right.

And that’s because they are. The difference isn’t about correctness; it’s about how each word works in the sentence. In practice, most native speakers don’t think about it (or simply avoid it). They either guess, get it wrong, or just use “who” and move on.

How “who” is used in English

"Who" asks about the person doing something. Take "Who called you?" The action is called, and you're asking which person did it. That person is the subject.

• Who sent this?
• Who made this?
• Who’s handling this?

You’ll see the same thing in statements, where “who” points to the person doing the action:

• The person who wrote this email made a mistake.
• She’s the one who organized the event.
• That’s the colleague who helped me.

How “whom” is used in English

"Whom" asks about the person on the receiving end. Take "Whom did you call?" The action is call, but this time someone else does it. In this case it's you. The person you're asking about is the one being called. Here are some more examples:

• Whom did you visit?
• Whom did you invite?
• Whom are they looking for?

You’ll often see “whom” after words like “to,” “for,” or “with”:

• For whom is this message?
• The person with whom I spoke was helpful.
• To whom did you send the email?

💡A quick tip: In everyday speech, "whom" holds on most strongly right after "to," "for," and "with." So if you remember one thing, let it be that.

How the rule bends in real life

The thing is, in everyday English, most people rarely use “whom,” even when it would be technically correct. Instead, they reshape the sentence and swap it out for “who” because it flows better. Like "Who did you call?" instead of "Whom did you call?", and that's completely normal.

So what changes?

Take a more formal sentence like “To whom did you send the email?” Most people would say, “Who did you send the email to?”

In this case, the sentence is rearranged so that:

1. “who” comes earlier

2. the preposition (“to”) moves to the end

That tweak makes the sentence sound more natural, even though the meaning stays exactly the same.

Here are some more examples:

“With whom are you speaking?” → “Who are you speaking with?”

“For whom is this message?” → “Who is this message for?”

“To whom should I address this?” → “Who should I address this to?”

All of the second versions are what you’ll hear in conversations, emails, and meetings. They’re not considered wrong. They’re just less formal.

So while “whom” hasn’t disappeared completely, it’s mostly limited to formal writing or situations where the tone is more deliberate.

In everyday use, no one is going to stop you mid-sentence to correct it. And if they do . . . you might need better company. Just saying.