Writing ordinal numbers can be surprisingly confusing. One small suffix can make the difference between correct and incorrect English. If you’ve ever wondered 22th or 22nd, the answer is simple: 22nd is correct, while 22th is incorrect.
This matters when you’re writing a 22nd birthday, a date, a ranking, an anniversary, or a 22nd monthsary. In this guide, we’ll explain why 22nd is the correct form, how ordinal numbers work, and how to avoid this common mistake.
22th or 22nd: Which One Is Correct?
The correct form is:
22nd
The incorrect form is:
22th
Here’s the difference at a glance:
| Form | Correct? | Word Form |
| 22nd | Yes | Twenty-second |
| 22th | No | Not standard English |
The number 22 is pronounced twenty-two. When you turn it into an ordinal number, it becomes twenty-second.
Therefore:
22 = twenty-two
22nd = twenty-second
The nd comes from second.
Why Is It 22nd Instead of 22th?
The easiest way to understand 22nd or 22th is to look at the ordinal word.
The cardinal number is:
twenty-two
The ordinal number is:
twenty-second
Since second is abbreviated as nd in ordinal numbers, 22 becomes:
22nd
This follows the same pattern as:
- 2nd = second
- 22nd = twenty-second
- 32nd = thirty-second
- 42nd = forty-second
- 52nd = fifty-second
So 22th doesn’t follow standard English ordinal spelling.
22nd or 22th in Dates
Dates are one of the most common situations where people encounter this question.
If you’re using an ordinal form, you can write:
March 22nd
Not:
March 22th
You can also write:
the 22nd of March
For example:
- January 22nd
- February 22nd
- April 22nd
- June 22nd
- September 22nd
- December 22nd
However, keep in mind that many formal writing styles simply use the number without an ordinal suffix:
March 22
That’s also correct. But if you choose to use a suffix, 22nd is the correct one.
22th or 22nd Birthday
If someone is celebrating their twenty-second birthday, the correct expression is:
22nd birthday
For example:
Happy 22nd birthday!
She is celebrating her 22nd birthday this weekend.
His 22nd birthday was a memorable one.
The incorrect version is:
Happy 22th birthday!
Why? Because you’re saying:
twenty-second birthday
not:
twenty-two-th birthday
The ordinal word second determines the ending.
22th or 22nd Monthsary
The same principle applies to a 22nd monthsary.
If you’re using “monthsary” to describe the twenty-second month of a relationship, the correct form is:
22nd monthsary
For example:
Happy 22nd monthsary to us!
Today marks our 22nd monthsary.
We’re celebrating our 22nd monthsary together.
Not:
Happy 22th monthsary!
Is “monthsary” standard English?
“Monthsary” is an informal word commonly used in some varieties of English, especially in social and relationship contexts. It combines month and the -sary ending associated with words such as anniversary.
In formal writing, you may prefer:
22nd month together
or:
22 months together
But if you use the word monthsary, the ordinal form is 22nd monthsary, not 22th monthsary.
22nd or 22th Anniversary
The correct form is also 22nd anniversary.
For example:
Today is our 22nd anniversary.
The organization celebrated its 22nd anniversary.
They are preparing for their 22nd wedding anniversary.
The incorrect version is:
22th anniversary
Again, the reason is that 22nd represents twenty-second.
22nd or 22th in Rankings
Ordinal numbers describe position in a sequence or ranking.
For example:
She finished 22nd in the race.
The company ranked 22nd nationally.
He came in 22nd place.
This was the team’s 22nd consecutive victory.
In each case, 22nd is correct because you’re describing position.
Cardinal vs. Ordinal: 22 vs. 22nd
Understanding cardinal and ordinal numbers makes this rule much easier.
22 is a cardinal number
A cardinal number tells you how many.
There are 22 students in the classroom.
Here, 22 represents a quantity.
22nd is an ordinal number
An ordinal number tells you where something comes in a sequence.
She was the 22nd student to arrive.
Here, 22nd represents position.
A useful way to remember the difference is:
22 = twenty-two = quantity
22nd = twenty-second = position
The Pattern Around 22nd
Look at the numbers immediately before and after 22:
| Number | Ordinal | Word Form |
| 19 | 19th | nineteenth |
| 20 | 20th | twentieth |
| 21 | 21st | twenty-first |
| 22 | 22nd | twenty-second |
| 23 | 23rd | twenty-third |
| 24 | 24th | twenty-fourth |
The sequence is:
21st → 22nd → 23rd → 24th
This makes 22nd much easier to remember.
The Basic Rule for Ordinal Suffixes
English ordinal numbers commonly use three special endings:
- Numbers ending in 1 → st
- Numbers ending in 2 → nd
- Numbers ending in 3 → rd
- Most other numbers → th
For example:
- 21st
- 22nd
- 23rd
- 24th
- 25th
However, there is an important exception:
- 11th
- 12th
- 13th
So the number 22 follows the nd pattern because its final two digits are 22.
You can also see the same pattern in:
- 32nd
- 42nd
- 52nd
- 62nd
- 72nd
- 82nd
- 92nd
Why Do People Write 22th?
The mistake usually happens because people remember that many ordinal numbers end in th.
For example:
- 10th
- 14th
- 15th
- 18th
- 20th
- 24th
Someone may therefore assume that 22 should also be written with th.
But 22 is different because its ordinal word is twenty-second.
The correct abbreviation is:
22nd
Another common reason: typing quickly
When you’re writing a birthday message or social media post quickly, it’s easy to type 22th without thinking about the suffix.
Fortunately, the correction is simple:
22th → 22nd
22nd in a Sentence
Here are some examples showing how 22nd works naturally in sentences.
Correct examples
Today is the 22nd of May.
She finished 22nd in the competition.
Happy 22nd birthday!
We’re celebrating our 22nd monthsary.
This is the company’s 22nd anniversary.
He was the 22nd person to enter the building.
Incorrect examples
Today is the 22th of May.
She finished 22th in the competition.
Happy 22th birthday!
We’re celebrating our 22th monthsary.
This is the company’s 22th anniversary.
The standard ordinal form is 22nd.
How to Remember 22nd or 22th
A simple memory trick is to connect 22nd with the word second.
Think:
2 → second → 2nd
Then:
22 → twenty-second → 22nd
You can also memorize this short sequence:
21st → 22nd → 23rd
The three endings appear in order:
st → nd → rd
Once you know that sequence, you’re unlikely to confuse 22nd with 22th.
Is 22nd Correct in Formal Writing?
Yes. 22nd is a standard ordinal abbreviation and is widely used in English.
However, the exact way you write dates and numbers can depend on the style guide you’re following.
For example, a formal document may write:
March 22
instead of:
March 22nd
Both can be appropriate depending on the context.
But 22th is not the standard alternative.
If you are unsure, especially in professional or academic writing, you can often avoid the issue by writing the date without the ordinal suffix.
Common Mistakes With 22nd
Mistake 1: Writing 22th
Incorrect: 22th
Correct: 22nd
Mistake 2: Confusing 22 with 22nd
Use 22 when you’re talking about quantity:
I have 22 books.
Use 22nd when you’re talking about order:
This is my 22nd book.
Mistake 3: Forgetting the word “second”
The ordinal form is twenty-second, not “twenty-twoth.”
Remembering the full word makes the abbreviation obvious.
Mistake 4: Applying the “th” rule to every number
Many ordinal numbers use th, but 21, 22, and 23 use:
21st → 22nd → 23rd
Frequently Asked Questions
Is it 22th or 22nd?
22nd is correct. 22th is incorrect in standard English.
Why is 22nd correct?
The ordinal form of 22 is twenty-second. Since second is represented by nd in the numerical abbreviation, the correct form is 22nd.
Is 22nd correct for a birthday?
Yes. The correct expression is 22nd birthday.
For example:
Happy 22nd birthday!
Is it 22th or 22nd monthsary?
If you use the informal term “monthsary,” the correct ordinal form is 22nd monthsary.
For example:
Happy 22nd monthsary!
Is 22nd correct for a date?
Yes. If you use an ordinal suffix, write 22nd.
For example:
The event is on June 22nd.
You may also simply write:
June 22
depending on your preferred style.
Is 22th ever correct?
No. 22th is not the standard English ordinal form. Use 22nd.
What is the word form of 22nd?
The word form is:
twenty-second
Is it 22nd anniversary or 22th anniversary?
The correct form is 22nd anniversary.
What comes before 22nd?
The ordinal number immediately before 22nd is:
21st
What comes after 22nd?
The next ordinal number is:
23rd
So the sequence is:
21st → 22nd → 23rd
Is it 22nd place or 22th place?
The correct expression is:
22nd place
For example:
He finished in 22nd place.
What is the difference between 22 and 22nd?
22 is a cardinal number used for quantity, while 22nd is an ordinal number used for position or sequence.
For example:
There are 22 people here.
She was the 22nd person to arrive.
Conclusion: 22th or 22nd?
When choosing between 22th or 22nd, the correct answer is 22nd.
The number 22 becomes twenty-second when it is used as an ordinal number. That’s why the correct abbreviation ends in nd, not th.
Whether you’re writing a 22nd birthday, 22nd monthsary, 22nd anniversary, date, ranking, or position, use 22nd.
The easiest sequence to remember is:
21st → 22nd → 23rd → 24th
So the next time you wonder 22nd or 22th, go with 22nd confidently.
