Paste your text and click a button to change its case. Each conversion applies in place, so you can chain several and undo any step.
Works on one word or thousands. Letter case only applies to scripts that have it — Arabic text is left unchanged by upper/lower conversions.
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UPPERCASE suits headings and warnings, lowercase suits email addresses and URLs, Title Case suits headlines, and Sentence case suits body copy and most modern interface text. Title Case here keeps small words such as 'and', 'of' and 'the' lowercase unless they start or end the text.
camelCase and PascalCase are common for variables and classes, snake_case and CONSTANT_CASE for Python, databases and settings, and kebab-case or a URL slug for file names and web addresses. The converter splits words across spaces, underscores, hyphens and existing camelCase, so you can convert between any of them. The clean-up buttons remove extra spaces, line breaks, blank lines and duplicate lines, or sort a list.
Count words, characters, sentences and reading time, and check text against common length limits.
Percent-encode or decode URLs and query strings, and break a URL into its parts.
Write Markdown with a live preview, then copy or download the HTML.
Add UTM parameters to any URL so Google Analytics can show where your visitors came from.
No. Every conversion runs in your browser, so it is safe for confidential text.
Arabic has no upper or lower case, so those conversions leave it unchanged. The clean-up tools such as removing extra spaces and sorting lines still work.
Style guides keep short words like 'and', 'of' and 'to' lowercase in the middle of a title. Use 'Capitalize Each Word' if you want every word capitalised.
Yes. The Undo button steps back through your last 20 changes.