Convert text to title case, sentence case, UPPER or lower case, or to camelCase, snake_case and kebab-case, with character and word counts.
By AdminDrafted with AI writing toolsUpdated Checked examples: 6
43 characters in 9 words: 0 uppercase and 35 lowercase letters, 0 digits, 8 spaces and 0 other characters.
Every word is capitalized except articles, conjunctions and prepositions of three letters or fewer (a, an, the, and, but, for, of, on, to…), which stay lowercase unless they are the first or last word or follow a colon (AP style). Existing capitals are lowered first, so acronyms need fixing by hand.
Everything is lowercased, then the first letter of each sentence and the pronoun “I” are capitalized. Proper nouns can't be detected.
Split into 9 words (the, quick, brown, fox, jumps, over, the, lazy, dog) at spaces, punctuation and lower-to-upper case changes; apostrophes are dropped.
The converter rewrites text in seven cases at once. Upper and lower case follow the Unicode default case mappings, so ß becomes SS. Title case capitalizes every word except articles, conjunctions and prepositions of three letters or fewer, which stay lowercase unless they come first, last or after a colon (AP style). Sentence case lowercases everything, then capitalizes the first letter of each sentence and the pronoun I. camelCase, snake_case and kebab-case split the text into words at spaces, punctuation and lower-to-upper changes, and drop apostrophes.
People use it to fix headings typed in capitals, format titles and turn phrases into variable names. The default, "the quick brown fox jumps over the lazy dog", becomes "The Quick Brown Fox Jumps Over the Lazy Dog" in title case and the_quick_brown_fox_jumps_over_the_lazy_dog in snake_case; it has 43 characters and 9 words.
Title and sentence case lower existing capitals first, so acronyms such as NASA and proper nouns need fixing by hand.
Title case capitalizes every word except short articles, conjunctions and prepositions in the middle, so "the quick brown fox jumps over the lazy dog" becomes "The Quick Brown Fox Jumps Over the Lazy Dog". Sentence case capitalizes only the first word of each sentence and the pronoun I. Uppercase and lowercase change every letter.
These words stay lowercase unless they are the first word, the last word, or follow a colon, period, question mark or exclamation mark:
Every other word is capitalized, including four-letter words such as with and from: "life with a dog: what to expect" becomes "Life With a Dog: What to Expect".
A short word right after a colon is capitalized too, so "the lord of the rings: the return of the king" becomes "The Lord of the Rings: The Return of the King".
The Chicago Manual of Style lowercases prepositions of any length, such as between, so check which style your publication follows.
Sentence case lowercases everything, then capitalizes the first letter, each letter that follows a period, question mark or exclamation mark and a space, and the pronoun I.
"HELLO WORLD. how ARE you? i am fine" becomes "Hello world. How are you? I am fine". It cannot recognize names, so "i met alice in london" becomes "I met alice in london".
Abbreviations also trip it: "see e.g. the notes" becomes "See e.g. The notes".
These join words without spaces so a phrase can serve as a name in code. The text is split into words at spaces, punctuation and lower-to-upper changes, and apostrophes are dropped:
xmlHttpRequestParser, xml_http_request_parser and xml-http-request-parser.dontStopMeNow: the hyphen splits words, the apostrophe does not.Python's PEP 8 style guide uses snake_case for functions and variables, CSS properties such as background-color use kebab-case, and JavaScript's built-in methods such as toUpperCase use camelCase.
Check the result before using it as a name. "2nd place winner" becomes 2nd_place_winner, and most programming languages reject an identifier that starts with a digit.
Upper and lower case follow Unicode's default case mappings. German ß maps to SS, so "straße" (6 characters) uppercases to "STRASSE" (7), even though a capital ẞ exists (Unicode case-mapping FAQ).
The default mappings ignore language-specific rules. Turkish writes a capital dotted İ for i, but the default turns "istanbul" into "ISTANBUL".
Characters are Unicode code points, with spaces and punctuation included. The pangram above has 43: 35 lowercase letters and 8 spaces. Some emoji count as two, such as 👍🏽, a thumbs-up plus a skin-tone modifier.
A word is a run of text between spaces that contains a letter or a digit. !!! has no words, and "你好 世界" has two, because Chinese is split only where spaces are.
| Input | Characters | Words |
|---|---|---|
| Default | 43.000000 | 9.000000 |
| Acronym boundaries | 21.000000 | 2.000000 |
| Sharp s | 6.000000 | 1.000000 |
| Non Latin | 5.000000 | 2.000000 |
| Punctuation only | 3.000000 | 0.000000 |
!!!, which leaves the camelCase, snake_case and kebab-case versions empty.Title case and sentence case lower every existing capital first, so a few things need a manual pass:
To count words and estimate reading time for longer text, use the word counter.
Checked against: Independent calculation
Checked against: AP rule: short function words stay lowercase except first, last and after a colon
Checked against: re implementation: capitalize after. ! ? and the pronoun I
Checked against: re split at [a-z0-9][A-Z] and [A-Z]+[A-Z][a-z] boundaries
In AP style, articles (a, an, the) and conjunctions and prepositions of three letters or fewer (and, but, for, nor, or, so, yet, as, at, by, in, of, off, on, per, to, up, via) stay lowercase unless they are the first or last word or follow a colon. Words of four letters or more, such as "over" and "with", are capitalized. The Chicago Manual of Style differs: it lowercases prepositions of any length, such as "between".
Title case capitalizes most words (How to Write a Good Title); sentence case capitalizes only the first word, proper nouns and the pronoun I (How to write a good title). APA Style uses sentence case for the titles of articles and books in reference lists and title case for headings and for titles mentioned in the text.
They join words without spaces so a phrase can be used as a name in code. camelCase capitalizes each word after the first (xmlHttpRequestParser), snake_case joins lowercase words with underscores (xml_http_request_parser) and kebab-case with hyphens (xml-http-request-parser). Python's PEP 8 style guide uses snake_case for function and variable names; kebab-case appears in CSS property names such as background-color and in URLs.
The Unicode Standard's default full case mapping, listed in SpecialCasing.txt, maps the German sharp s (ß) to the two letters SS, so "straße" (6 characters) becomes "STRASSE" (7). A capital sharp s, ẞ, was added in Unicode 5.1 in 2008, but the default uppercase mapping still gives SS. The character count here is for the text you typed.
Yes. Characters counts everything you typed, spaces and punctuation included, and the chart splits the total into uppercase and lowercase letters, digits, spaces and other characters. The default sentence has 43 characters: 35 lowercase letters and 8 spaces. Each Unicode code point counts once, so some emoji count as two. Words are runs of text between spaces that contain a letter or digit.
This calculator includes 6 worked examples with independently sourced answers. They run in the test suite, and you can run them here too.