Free writing tool
Case converter for uppercase, lowercase, title and sentence case
Paste text, press a case, copy it back. Undo restores the previous version, and the counts under the box update as you type.
Characters
64
Without spaces
51
Words
14
Sentences
2
Lines
1
Converted in your browser using its locale rules. Title Case cannot tell a proper noun from an ordinary word, so check names and acronyms ("NASA" becomes "Nasa") before publishing.
Title case has rules, and no two style guides agree on them
Capitalising every word is easy and looks wrong: “The Best Time To Post On TikTok” capitalises three words a newspaper would not. The style guides agree that short function words stay lowercase and disagree about which ones, how long is short, and what happens to a preposition that is doing the work of a verb.
This tool takes the common ground: articles, conjunctions and short prepositions stay lowercase unless they open or close a line. What no tool can do is tell a proper noun from an ordinary word, so a headline containing a product name or an acronym needs one look before it goes out. NASA comes back as Nasa.
Which case for which post
| Case | Use it for | Avoid it for |
|---|---|---|
| UPPERCASE | One emphasised word, an acronym, a label on an image | A whole sentence, which reads as shouting and which some screen readers spell out letter by letter |
| lowercase | The deliberate casual voice on X and Threads | A LinkedIn headline, where it reads as an error rather than a choice |
| Title Case | Headlines, post titles, product names | Body text, where it slows reading |
| Sentence case | Almost everything else | Very little; it is the default for a reason |
| snake_case, kebab-case, camelCase | File names, URL slugs, code, campaign tags | Anything a human reads for pleasure |
What the counts mean
- Characters are counted as code points, so an emoji counts as one and an accented letter counts as one. X weights some characters double; the character counter on this site handles that.
- Words split on whitespace, so a hyphenated word is one word and a URL is one word.
- Sentences end at a full stop, question mark or exclamation mark, so abbreviations inflate the count slightly. Treat it as a structural signal, not a precise figure.