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Ordinal Number Converter

1 to 1st, 22 to twenty-second, and back — for a whole list at once.

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Ordinals

Quick Tool Overview

The Ordinal Number Converter turns whole numbers into ordinals — 1st, 22ⁿᵈ or twenty-second — in bulk, following the 11th-12th-13th exception, and converts ordinals back into plain numbers.

What it does
Converts numbers to ordinals and back
You give it
A list of whole numbers or ordinals
You get back
Suffixes, superscripts or words
Best for
Rankings, certificates, dates and social posts
Converters Free, unlimited use No sign-up Runs in your browser

About the Ordinal Number Converter

Ordinal numbers say position rather than quantity — first, second, twenty-third — and their suffixes follow a rule with an awkward exception: 1, 2 and 3 take st, nd and rd, except when the number ends in 11, 12 or 13, which always take th. Get it wrong in a certificate, a leaderboard or a date and it shows.

Paste a list of numbers, one per line, and each becomes its ordinal: a short suffix such as 22nd, a superscript suffix such as 22ⁿᵈ for social posts, the full words twenty-second, grouped digits like 1,001st, or both together. Tick reverse to turn "21st" or "twenty-first" back into 21. Any size of whole number works.

Key features of the Ordinal Number Converter

Correct teen exception

Numbers ending in 11, 12 or 13 always take th, including 111th and 213th.

Five output styles

Suffix, superscript, words, grouped digits, or suffix and words together.

Superscript that pastes anywhere

Unicode ˢᵗ ⁿᵈ ʳᵈ ᵗʰ keeps its look in places without formatting.

Works in reverse

Turn 21st or twenty-first back into 21 for sorting and spreadsheets.

Any size

Very large whole numbers get the right suffix and ordinal words.

How to use the Ordinal Number Converter

  1. 1

    Paste the numbers

    One whole number per line — a ranking, a list of dates, anything.

  2. 2

    Choose the style

    Suffix, superscript, words, grouped digits or both.

  3. 3

    Set the word case

    lowercase, Title Case or UPPERCASE for the written-out ordinals.

  4. 4

    Or reverse it

    Tick reverse to convert ordinals back into plain numbers.

Frequently asked questions

Because eleven, twelve and thirteen are said "eleventh", "twelfth" and "thirteenth". The th rule applies to any number ending in 11, 12 or 13, so 112th and 213th too.

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