Ordinal Number Converter
Type 22, 22nd or "twenty-second" and get the ordinal numeral (22nd), word form (twenty-second), superscript, Roman numeral and the abbreviation in 7 other languages.
Use the Ordinal Number Converter
- Cardinal
- —
- Cardinal words
- —
- Superscript
- —
- Roman numeral
- —
Ranges such as 1-31 expand to every number (up to 1,000 rows).
| Input | Numeral | Word Form |
|---|
Ordinal abbreviation in other languages
n = —| Language | Written | Rule |
|---|---|---|
| Spanish | — | period + º (masc.) / ª (fem.) |
| French | — | 1er / 1re, then e (2e, 21e) |
| German | — | number + period |
| Italian | — | º (masc.) / ª (fem.) |
| Portuguese | — | º (masc.) / ª (fem.) |
| Dutch | — | number + e |
| Swedish | — | :a after 1 or 2 (not 11, 12), else :e |
Ordinal Suffix Rules
Irregular word forms
first, second, third, fifth, eighth, ninth, twelfth — and every ten changes -ty to -tieth (twentieth, fortieth). All other words just add -th (fourth, sixth, eleventh, hundredth, thousandth, millionth).
Ordinal numbers 1 to 100 in words
| 1st | first |
| 2nd | second |
| 3rd | third |
| 4th | fourth |
| 5th | fifth |
| 6th | sixth |
| 7th | seventh |
| 8th | eighth |
| 9th | ninth |
| 10th | tenth |
| 11th | eleventh |
| 12th | twelfth |
| 13th | thirteenth |
| 14th | fourteenth |
| 15th | fifteenth |
| 16th | sixteenth |
| 17th | seventeenth |
| 18th | eighteenth |
| 19th | nineteenth |
| 20th | twentieth |
| 21st | twenty-first |
| 22nd | twenty-second |
| 23rd | twenty-third |
| 24th | twenty-fourth |
| 25th | twenty-fifth |
| 26th | twenty-sixth |
| 27th | twenty-seventh |
| 28th | twenty-eighth |
| 29th | twenty-ninth |
| 30th | thirtieth |
| 31st | thirty-first |
| 32nd | thirty-second |
| 33rd | thirty-third |
| 34th | thirty-fourth |
| 35th | thirty-fifth |
| 36th | thirty-sixth |
| 37th | thirty-seventh |
| 38th | thirty-eighth |
| 39th | thirty-ninth |
| 40th | fortieth |
| 41st | forty-first |
| 42nd | forty-second |
| 43rd | forty-third |
| 44th | forty-fourth |
| 45th | forty-fifth |
| 46th | forty-sixth |
| 47th | forty-seventh |
| 48th | forty-eighth |
| 49th | forty-ninth |
| 50th | fiftieth |
| 51st | fifty-first |
| 52nd | fifty-second |
| 53rd | fifty-third |
| 54th | fifty-fourth |
| 55th | fifty-fifth |
| 56th | fifty-sixth |
| 57th | fifty-seventh |
| 58th | fifty-eighth |
| 59th | fifty-ninth |
| 60th | sixtieth |
| 61st | sixty-first |
| 62nd | sixty-second |
| 63rd | sixty-third |
| 64th | sixty-fourth |
| 65th | sixty-fifth |
| 66th | sixty-sixth |
| 67th | sixty-seventh |
| 68th | sixty-eighth |
| 69th | sixty-ninth |
| 70th | seventieth |
| 71st | seventy-first |
| 72nd | seventy-second |
| 73rd | seventy-third |
| 74th | seventy-fourth |
| 75th | seventy-fifth |
| 76th | seventy-sixth |
| 77th | seventy-seventh |
| 78th | seventy-eighth |
| 79th | seventy-ninth |
| 80th | eightieth |
| 81st | eighty-first |
| 82nd | eighty-second |
| 83rd | eighty-third |
| 84th | eighty-fourth |
| 85th | eighty-fifth |
| 86th | eighty-sixth |
| 87th | eighty-seventh |
| 88th | eighty-eighth |
| 89th | eighty-ninth |
| 90th | ninetieth |
| 91st | ninety-first |
| 92nd | ninety-second |
| 93rd | ninety-third |
| 94th | ninety-fourth |
| 95th | ninety-fifth |
| 96th | ninety-sixth |
| 97th | ninety-seventh |
| 98th | ninety-eighth |
| 99th | ninety-ninth |
| 100th | one hundredth |
Summary
The Ordinal Number Converter turns any whole number from 0 to 999 trillion into its ordinal numeral (1st, 2nd, 3rd, 22nd, 111th) and its written word form (first, twenty-second, one hundred eleventh). It also works in reverse: type "twenty-first" or "21st" and it returns 21, and it flags a wrong suffix such as "21th". Each result also shows the superscript form (21ˢᵗ), the Roman numeral (1–3,999) and the ordinal abbreviation in Spanish, French, German, Italian, Portuguese, Dutch and Swedish. The bulk panel accepts one number or range per line (for example 1-31) and copies the results as tab-separated text. Everything runs in your browser.
How it works
- Type a number (commas allowed, e.g. 1,000), an ordinal numeral (21st) or words (twenty-first) into the input.
- The suffix rule looks at the last two digits first: if they are 11, 12 or 13 the suffix is -th; otherwise a last digit of 1 gives -st, 2 gives -nd, 3 gives -rd and every other digit gives -th.
- The word form spells out the number in English and changes only the last word: one → first, two → second, three → third, five → fifth, eight → eighth, nine → ninth, twelve → twelfth, -ty → -tieth, and every other word adds -th.
- Words are parsed back to a number, so "one hundred and first" returns 101; a numeral with the wrong suffix (21th) is corrected.
- Use Bulk to convert one number or range (1-31) per line, then copy the table as tab-separated text.
Use cases
- Writing dates, anniversaries and rankings in formal documents (the 21st century, her 40th birthday).
- Generating ordinal labels for leaderboards, floors, editions and competition places.
- Checking the irregular suffixes of 11th, 12th, 13th and 111th–113th.
- Spelling ordinals out in words for cheques, legal documents and style guides that require words.
- Converting written ordinals ("forty-second") back to numerals for spreadsheets.
- Getting the correct ordinal abbreviation in Spanish (1.º), French (1er, 2e), German (1.) and other languages.
- Producing a list of 1st–31st for calendar or date formatting.