My and His or Mine and His — Which One Is Correct?

You’ve probably paused mid-sentence and wondered whether “my and his” or “mine and his” sounds right. The confusion appears small. Yet one missing word changes the grammar completely. Many writers mix these forms because both my and mine show possession. They look similar, they sound related, and they often appear in the same sentence structure.

Here’s the problem. “My” needs a noun, while “mine” stands alone. When you pair me with his, the structure often breaks. The sentence becomes uneven, awkward, or technically incorrect. That’s why phrases like “my and his are similar” feel off immediately.

This guide explains the difference clearly. You’ll learn when “mine and his” works, why “my and his” usually fails, and which option sounds most natural in real writing. You’ll also see tables, examples, quick rules, and practical fixes you can use instantly.

My and His vs Mine and His — The Short Answer

If you want the quick rule, here it is:

• “My and his” → usually incorrect
• “Mine and his” → correct in certain structures
• “His and mine” → most natural choice
• “My ___ and his ___” → always correct

The difference comes down to grammar balance. Both sides of the sentence must match. When they don’t match, the sentence sounds wrong.

Quick Comparison Table

Phrase	Correct?	Why	Example
My and his	❌ Incorrect	Determiner + pronoun mismatch	My and his are blue
Mine and his	✅ Correct	Both are pronouns	Mine and his are blue
His and mine	✅ Best	Balanced and natural	His and mine are blue
My car and his car	✅ Correct	Both include nouns	My car and his car

Notice something subtle. English prefers parallel structure. When one side drops the noun, the other must drop it too.

Why “My and His” Sounds Wrong

The phrase “my and his” usually fails because my cannot stand alone. It needs a noun after it. Without one, the sentence feels incomplete.

Look at these examples:

• My and his are broken ❌
• My and his look identical ❌
• My and his were selected ❌

Each sentence feels unfinished. Your brain expects a noun after my. It never arrives.

Now compare corrected versions:

• Mine and his are broken ✅
• His and mine look identical ✅
• My phone and his were selected ✅

The difference is structural. English requires parallel grammar. Both sides must function the same way.

Grammar Breakdown

• My = possessive determiner
• Mine = possessive pronoun
• His = both determiner and pronoun

That flexibility makes his tricky. It works in both positions. My does not.

Understanding Possessive Words (Simple Grammar Breakdown)

To understand “my and his” vs “mine and his”, you need one concept: possessive determiners vs possessive pronouns.

Possessive Determiners

These come before a noun.

Examples:

• my book
• his car
• her phone
• our house
• their idea

You cannot use them alone.

Incorrect:

• This is my ❌
• My is broken ❌

Correct:

• This is my book ✅

Possessive Pronouns

These replace the noun completely.

Examples:

• mine
• yours
• his
• hers
• ours
• theirs

Correct:

• This is mine
• That one is his

These work alone. No noun needed.

Determiner vs Pronoun Table

Possessive Determiner	Possessive Pronoun
My	Mine
Your	Yours
His	His
Her	Hers
Our	Ours
Their	Theirs

This table explains everything. My requires a noun. Mine replaces the noun.

When “Mine and His” Is Correct

You can use “mine and his” when both words replace nouns already mentioned.

Examples:

• Mine and his are identical
• Mine and his were approved
• Mine and his look expensive
• Mine and his arrived late

Each sentence works because both mine and his function as pronouns.

Example With Context

The cars are parked outside.
Mine and his are blue.

The noun cars is understood. No repetition needed.

This structure sounds natural because both parts match.

Why “His and Mine” Sounds More Natural

Even though mine and his is correct, his and mine usually sounds better.

English rhythm often places mine last. It feels smoother when spoken.

Compare:

• Mine and his are ready
• His and mine are ready

The second version flows better. Many style guides recommend this order.

Preferred Usage

Option	Correct	Natural
Mine and his	Yes	Acceptable
His and mine	Yes	Best
My and his	No	Incorrect

Writers often choose his and mine to avoid awkward rhythm.

The Best Way to Fix “My and His”

If you write “my and his”, rewrite the sentence using one of these methods.

Add the Noun Again

This is the clearest fix.

• My car and his car
• My phone and his phone
• My answer and his answer

You can shorten the second noun:

• My car and his
• My phone and his

That structure works perfectly.

Use Pronouns Instead

Replace both with pronouns.

• Mine and his
• His and mine
• Yours and his

This avoids repetition while staying correct.

Rewrite Naturally

Sometimes the best fix is rewriting.

Examples:

• Both his and mine are ready
• The two, his and mine, were selected
• His and mine look identical

These feel more natural in conversation.

Real Sentence Examples — Correct vs Incorrect

Incorrect Examples

• My and his are broken
• My and his look better
• My and his were chosen
• My and his is different

Each sentence lacks a noun after my.

Correct Examples

• Mine and his are broken
• His and mine look better
• My laptop and his were chosen
• His and mine are different

Notice how each corrected version restores balance.

Common Mistakes People Make

Writers often confuse these structures because they sound similar.

Mixing Determiner and Pronoun

Incorrect:

• My and his are blue

Correct:

• Mine and his are blue

Dropping the Noun Incorrectly

Incorrect:

• My and his were selected

Correct:

• My design and his were selected

Overcorrecting With “Mine and His”

Sometimes writers switch everything to mine even when a noun exists.

Incorrect:

• Mine car and his car

Correct:

• My car and his car

Using Informal Speech in Formal Writing

Casual speech sometimes bends grammar.

Example:

• Me and him went shopping

Formal writing requires:

• He and I went shopping

The same principle applies to my and his.

Quick Rule You Can Remember

Use this simple test.

If the noun is missing → use mine
If the noun is present → use my

Examples:

• My book and his book
• My book and his
• Mine and his

All correct.

My and His vs Mine and His in Real Writing

Let’s look at real-world style examples.

Business Writing

Incorrect:
My and his proposal were approved.

Correct:
My proposal and his were approved.

Better:
His and mine were approved.

Academic Writing

Incorrect:
My and his results were similar.

Correct:
Mine and his results were similar.

Better:
His results and mine were similar.

Casual Writing

Incorrect:
My and his look the same.

Correct:
Mine and his look the same.

Best:
His and mine look the same.

Case Study: Fixing Awkward Sentences

Original Sentence

My and his are parked outside.

Problem

The word my has no noun. The sentence breaks.

Fix Option One

My car and his are parked outside.

Fix Option Two

Mine and his are parked outside.

Best Option

His and mine are parked outside.

Each version improves clarity.

Parallel Structure Explained Simply

Parallel structure means matching grammar forms.

Correct:

• Mine and his
• My phone and his phone
• His and mine

Incorrect:

• My and his
• Mine and his phone
• My phone and his

Both sides must match.

Read More: Making a Scene: Meaning, Examples, Synonyms

Visual Grammar Diagram

Incorrect structure:

My → needs noun
His → stands alone

Mismatch occurs.

Correct structure:

Mine → pronoun
His → pronoun

Balanced sentence.

My vs Mine Quick Reference Table

Use	Word	Example
Before noun	My	My phone is new
Without noun	Mine	The phone is mine
Comparison	Mine and his	Mine and his are new
With noun	My phone and his	My phone and his

Memory Trick for My and His vs Mine and His

Think of this simple rule:

My needs backup. Mine stands alone.

Examples:

• My idea → needs noun
• Mine → complete alone

So:

• My and his ❌
• Mine and his ✅

“Mine and His” vs “His and Mine” — Which Should You Use?

Both are correct. One sounds better.

Comparison

Mine and his are ready
His and mine are ready

The second flows more naturally.

English often places mine last for rhythm.

Recommended usage:

• Use his and mine in formal writing
• Use mine and his if sentence flow demands

Advanced Examples With Context

The jackets are expensive.
His and mine cost the same.

The answers were different.
Mine and his didn’t match.

The houses are identical.
His and mine were built together.

Each sentence remains balanced.

My and His in Spoken English

In casual conversation, people sometimes say:

• My and his look similar
• My and his are ready

This happens because speech moves fast. Grammar gets simplified.

However, formal writing requires correctness. Avoid this structure in:

• blog posts
• academic writing
• business emails
• professional documents

Quick Self-Test

Which sentence is correct?

My and his are broken
Mine and his are broken

Correct answer:
Mine and his are broken

Which sentence is correct?

My car and his car are fast
Mine car and his car are fast

Correct answer:
My car and his car are fast

Which sentence sounds best?

Mine and his were selected
His and mine were selected

Best answer:
His and mine were selected

Final Rule Summary

• Never use my and his alone
• Use mine and his when nouns are missing
• Prefer his and mine for natural flow
• Add nouns for clarity when needed
• Keep grammar parallel

Correct:
His and mine are similar

Incorrect:
My and his are similar

FAQs

Is “my and his” ever correct?

Only when followed by nouns.

Correct:
My phone and his phone

Incorrect:
My and his

Should I use “mine and his” or “his and mine”?

Both are correct. His and mine sounds more natural and polished.

Why does “my and his” sound awkward?

Because my requires a noun, while his does not. The sentence becomes unbalanced.

Is this important in formal writing?

Yes. Grammar balance improves clarity, professionalism, and readability.

What is the easiest rule to remember?

If the noun is missing, use mine. If the noun appears, use my.

Conclusion

The difference between “my and his” and “mine and his” comes down to structure. My needs a noun, while mine replaces one. When you write my and his, the sentence becomes uneven. One side lacks support. The result sounds awkward and incorrect.

The safest approach is simple. Use his and mine when nouns are implied. Use my ___ and his ___ when nouns are present. Keep both sides parallel. When in doubt, rewrite the sentence for clarity. This small adjustment instantly improves grammar, flow, and professionalism.