Calculate Ord N

ORD N is a mathematical function that returns the ordinal number for a given integer. This calculator helps you quickly determine the ordinal suffix (st, nd, rd, or th) for any positive integer.

What is ORD N?

ORD N is a function that converts a cardinal number (like 1, 2, 3) into its ordinal form (1st, 2nd, 3rd). This is commonly used in English to indicate the position in a sequence.

Ordinal numbers are essential in various contexts, including rankings, dates, and ordered lists. For example, "1st place" or "the 3rd quarter" use ordinal numbers.

How to Calculate ORD N

Calculating ORD N involves determining the correct suffix for a given integer. The rules for ordinal suffixes in English are as follows:

Numbers ending in 1 (except 11) use "st" (e.g., 1st, 21st, 31st)
Numbers ending in 2 (except 12) use "nd" (e.g., 2nd, 22nd, 32nd)
Numbers ending in 3 (except 13) use "rd" (e.g., 3rd, 23rd, 33rd)
All other numbers use "th" (e.g., 4th, 11th, 12th, 13th)

This calculator applies these rules automatically to provide the correct ordinal number.

Formula

ORD N Formula

The ORD N function follows these logical rules:

If N ends with 1 and does not end with 11, return "st"
If N ends with 2 and does not end with 12, return "nd"
If N ends with 3 and does not end with 13, return "rd"
Otherwise, return "th"

Examples

Here are some examples of how ORD N works:

1 → 1st
2 → 2nd
3 → 3rd
4 → 4th
11 → 11th
12 → 12th
13 → 13th
21 → 21st
22 → 22nd
23 → 23rd
100 → 100th

FAQ

What is the difference between cardinal and ordinal numbers?: Cardinal numbers (1, 2, 3) represent quantity, while ordinal numbers (1st, 2nd, 3rd) represent position or order.
Are there exceptions to the ordinal suffix rules?: Yes, numbers ending in 11, 12, or 13 always use "th" regardless of the last digit.
Can ORD N be used for negative numbers?: No, ORD N is designed for positive integers only. Negative numbers do not have standard ordinal forms.
Is ORD N the same in all languages?: No, ordinal suffix rules vary by language. English follows the rules shown here, while other languages may have different patterns.