Paste your text, pick a style, and the converted version appears instantly — Sentence case, lower case, UPPER CASE, Capitalized Case, Title Case, aLtErNaTiNg cAsE, and iNVERSE cASE — with a one-click copy button. Free, no signup, and your text never leaves your browser.
How to use it
- Paste (or type) your text into the top box.
- Click the case style you want — the result updates live below.
- Hit Copy result and paste it back where it belongs.
The seven styles, and when to reach for each
- Sentence case — normal prose: first letter of each sentence capitalized, everything else lowered. The fastest fix for text typed with caps lock on, and it restores the pronoun “I” automatically.
- lower case — flattens everything. Useful for tags, usernames, and code-adjacent text.
- UPPER CASE — headings, legal disclaimers, form fields that demand shouting.
- Capitalized Case — Every Word Starts With A Capital. Common for names and address lines.
- Title Case — headline style used by books and publications. Short connector words (“of”, “and”, “the”) stay lowercase unless they open or close the title, which is what editors actually expect — most converters get this wrong by capitalizing every word.
- aLtErNaTiNg cAsE — the mocking-meme style, alternating letter by letter.
- iNVERSE cASE — swaps whatever you have: upper becomes lower and vice versa. Handy when a paragraph was typed with caps lock inverted.
Typical rescues
The caps-lock email that reads like yelling. A headline your CMS needs in proper Title Case. A CSV column of names in all-caps that should be Capitalized. A paper title that must follow style guide capitalization. Product descriptions pasted from a supplier sheet IN FULL CAPS. Rather than retyping, convert once and copy out.
Details that make the output trustworthy
Conversion is Unicode-aware, so accented characters (“naïve” → “NAÏVE”), non-English alphabets, and emoji all behave — characters without a case concept simply pass through. Sentence case skips letter-dot abbreviations like “i.e.” and “e.g.” instead of capitalizing the next word, and Title Case works line by line, so a list of headlines converts correctly in one pass.
Line breaks, spacing, and punctuation are never altered — only letter case changes. If the spacing itself is the problem, run the text through the remove line breaks tool first, check length limits with the word counter, or clean up lists with the remove duplicate lines tool.
Private by design
There is no server behind this page — conversion is JavaScript running on your device. That is why it works instantly on any length of text, keeps working offline once the page is loaded, and why pasting confidential drafts, contracts, or unpublished work here is safe.