Have you ever paused while writing an email and wondered whether you should write “who to contact” or “whom to contact”? You’re not alone. This is one of the most common grammar questions among students, professionals, writers, and English learners.
English grammar can seem confusing because many traditional rules have evolved over time. While whom is still grammatically correct in certain situations, modern English increasingly favors who, especially in everyday conversation and informal writing.
Understanding the difference doesn’t just help you avoid grammar mistakes—it also improves your writing skills, vocabulary, sentence structure, and confidence in both academic and professional communication.
This guide explains everything you need to know, including easy grammar rules, comparison tables, sentence examples, common mistakes, exercises, FAQs, and practical tips that make choosing the correct word simple.
Who vs. Whom: Understanding the Basics
Both who and whom are pronouns that refer to people.
Their difference depends on the role they play in a sentence.
| Pronoun | Function | Similar Pronoun |
| Who | Subject | He, She, They |
| Whom | Object | Him, Her, Them |
Think of it this way:
- Who performs an action.
- Whom receives an action.
Examples
✅ Who called you?
Here, who is doing the calling.
✅ Whom did you call?
Here, whom receives the action of calling.
This subject-versus-object rule is the foundation of using these words correctly.
Why “Who to Contact” Is More Common Today
Although grammar books often teach whom as the correct object pronoun, modern English has changed considerably.
Native speakers now use who in most situations.
You’ll commonly see:
- Who should I contact?
- Do you know who to ask?
- Tell me who to call.
- Who can I email?
These sound completely natural.
Even newspapers, websites, universities, and businesses often prefer who because it feels conversational and reader-friendly.
Only highly formal writing regularly uses whom today.
When “Whom to Contact” Is Grammatically Correct
Use whom when the pronoun functions as the object of a verb or preposition.
Examples
- Whom should I contact?
- Whom did you invite?
- To whom should I send this letter?
- With whom are you traveling?
- For whom is this package?
Notice that someone else performs the action.
The person represented by whom receives it.
A Simple Trick to Decide Between Who and Whom
The easiest grammar shortcut is the he/him test.
Replace the word with he or him.
If he sounds correct, use who.
If him sounds correct, use whom.
Example 1
Who called?
He called.
✅ Use who.
Example 2
You called whom?
You called him.
✅ Use whom.
This trick works surprisingly well in most situations.
Who to Contact or Whom to Contact?
Let’s answer the question directly.
Both expressions can be correct.
In formal English
✔ Whom to contact
Example:
“The brochure explains whom to contact for additional information.”
In everyday English
✔ Who to contact
Example:
“The website tells you who to contact if you need help.”
Today, who to contact is far more common in:
- Websites
- Business communication
- Customer support
- Emails
- Blogs
- Social media
- News articles
Meanwhile, whom to contact appears more often in:
- Legal documents
- Academic writing
- Government publications
- Formal reports
Comparison Table: Which One Should You Use?
| Situation | Recommended Choice |
| Casual conversation | Who |
| Friendly email | Who |
| Blog article | Who |
| Customer service page | Who |
| Text messages | Who |
| School assignments | Either |
| Academic paper | Whom (if following strict grammar) |
| Legal writing | Whom |
| Government documents | Whom |
| Formal letters | Whom |
Sentence Examples in Different Contexts
Everyday Conversation
- Who should I call?
- Do you know who to ask?
- Tell me who to email.
- Who handles customer support?
- Who can solve this problem?
Professional Emails
- Please let me know who to contact.
- Could you tell me who manages this department?
- Who should I reach out to regarding billing?
- I would appreciate knowing who can assist me.
Formal Writing
- Please indicate whom to contact.
- Whom should applicants notify?
- To whom should inquiries be addressed?
- The report identifies whom to consult.
Academic Writing
- Students should determine whom to contact for advising.
- The handbook explains whom to notify.
- Researchers identified whom they interviewed.
Formal vs. Informal English
English varies depending on the audience.
Informal Style
- Who do I ask?
- Who can help?
- Who do I email?
- Who should I contact?
This style sounds natural and friendly.
Formal Style
- Whom should I contact?
- To whom should this request be addressed?
- Whom do you recommend?
This style fits official documents and professional correspondence.
Understanding tone helps improve writing and communication skills.
Common Mistakes English Learners Make
Mistake 1
❌ Whom is calling?
✅ Who is calling?
Mistake 2
❌ Who did you invite? (Technically informal but widely accepted.)
Formal version:
✅ Whom did you invite?
Mistake 3
❌ To who should I send this?
Formal grammar:
✅ To whom should I send this?
Mistake 4
Using whom everywhere because it sounds sophisticated.
Modern readers often find unnecessary use of whom awkward.
Choose clarity over sounding overly formal.
Practical Tips for Better Grammar and Writing
Improving grammar isn’t just about memorizing rules. It’s about understanding how English is actually used.
Helpful habits include:
- Read professionally edited articles.
- Listen to native speakers.
- Practice writing emails.
- Learn sentence structure.
- Review subject and object pronouns.
- Compare formal and informal writing.
- Edit your own work.
- Read your sentences aloud.
- Use grammar checkers as learning tools, not replacements.
- Keep a notebook of grammar patterns.
Over time, choosing between who and whom becomes automatic.
Practice Exercises
Choose the correct answer.
Exercise 1
_____ called you yesterday?
A. Who
B. Whom
Answer:
✅ Who
Exercise 2
You invited _____ to dinner?
A. Who
B. Whom
Answer:
✅ Whom
Exercise 3
_____ should I email about registration?
Answer:
✅ Who (natural)
✅ Whom (formal)
Exercise 4
To _____ should I send my application?
Answer:
✅ Whom
Exercise 5
Do you know _____ can fix this computer?
Answer:
✅ Who
Quick Summary Table
| Question | Correct Answer |
| Subject of sentence | Who |
| Object of verb | Whom |
| Object of preposition | Whom |
| Everyday conversation | Usually Who |
| Formal writing | Often Whom |
| Business emails | Usually Who |
| Legal documents | Whom |
| Unsure? | Use the He/Him Test |
FAQs
1. Is “who to contact” grammatically correct?
Yes. It is widely accepted in modern English and is the preferred choice in most everyday writing and speech.
2. Is “whom to contact” still correct?
Yes. It is grammatically correct when whom functions as the object, especially in formal or academic contexts.
3. Which form is more common today?
Who to contact is far more common in contemporary English, including websites, emails, blogs, and customer support pages.
4. Will using “who” instead of “whom” be considered wrong?
In casual and professional communication, using who is generally acceptable. In very formal writing, some editors may still prefer whom where grammar rules require it.
5. How can I remember the difference?
Use the He/Him Test:
- If he fits, use who.
- If him fits, use whom.
Conclusion
Choosing between who and whom doesn’t have to be difficult. The key is understanding whether the pronoun acts as the subject or the object in a sentence. While traditional grammar favors whom in object positions, modern English increasingly prefers who, especially in conversation, emails, blogs, and everyday writing.
If you’re writing a legal document, academic paper, or highly formal correspondence, whom may still be the best choice. For most other situations, who sounds natural, clear, and perfectly acceptable. By learning the simple He/Him Test, practicing with real-world examples, and paying attention to tone, you’ll develop stronger grammar skills and greater confidence in your writing. Ultimately, effective communication is about choosing the form that best suits your audience while maintaining clarity and correctness.
