19th or 19st: Which One is The Correct Spelling?

We use numbers for adding dates, listing monthly expenses, bills, and many other things so it is important to write numbers in a way that is understandable to everyone.

If you have to use the number 19 in your conversation which format of it is correct “19th” or “19st”? Obviously the “19th” is the correct format.


Other Incorrect forms of 19th:

  • 19nd
  • 19rd

For Example

It’s my 19nd birthdayFalse
It’s my 19st birthdayFalse
It’s my 19rd birthdayFalse
It’s my 19th birthdayCorrect

How to Decide Which Form Is Correct While Writing?

if you are arranging something you might get confused about adding “the” and “st” in the end, so here I am to assist you with this problem.

Note: Ordinal numbers are used to allocate some positions to things, like 1st position, 2nd, 3rd, and so on.

The Rule for “the”:

You have to add “th” to all ordinal numbers except those that end at 1, 2, and 3.

For Example:

  • Incorrect: 1th, 2th, 3th, 4th, 5th, 6th, 7th, 8th, 9th, 10th.
  • Correct: 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th.

Rule for “St”

“st” is only applicable to those ordinal numbers that end at 1.

For Example:

  • Incorrect: 21th, 3th, 4th, 5th, 6th, 7th and so on.
  • Correct: 21st, 31st, 41st, 51st, 61st, 71st and so on.

The Ordinal Form of the Number That Ends at 1 Has “St” So Why 11th is the Correct Form?

11th is reception because of various reasons, one of the most authentic is its historical origin, as the “-teoða” suffix was used for 1 in older English.

Note: Pronunciation of “-teoða” is “tay-oh-tha”.

The “tay-oh-tha” pronunciation has over-changed and evolved into a newer version which is “th”. So that’s why 11th is still used as 11th instead of 11st because it means “one left over after ten”.

The second Obvious Reason is the influence of other languages like Dutch and German people also use the same form of this.

Result: So that’s why we use 11th form because of historical and other languages influence but because of our traditional linguistic we use “st” for any other number that ends at “1” except 11. so next time consider all rules before adding “St” or “th” to any ordinal number. For 19 the 19th is the correct form.


What About Numbers Ending in 0 (Like 10th)?

Simply add “th” to those ordinal numbers that end with “0”.

For Example: 20th, 30th, and so on.

What if I’m Unsure About an Ordinal Number?

Then take help from fourteen.com and find the exact form of any ordinal number.

Is It Okay to Use Numbers Instead of Writing Them Out as Ordinals?

If it’s tough for you to understand ordinal numbers then use numeral it will make the assignment very easy.

For Example: Use simple 19 instead of 19th. In non-formal writing, you can use any numbers, Roman numbers, or ordinal numbers but make sure if you work at a formal level then try to use accurate ordinal form.