Utility Stack
Free text tool
Paste text and instantly convert it to uppercase, lowercase, title case, sentence case, camel case, snake case, or a URL slug.
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Text is processed locally in your browser and is not sent to a server by this tool.
Title case capitalizes the main words in a headline or title. It is useful for article titles, page headings, presentations, and document names.
After converting, skim the result for brand names, acronyms, and short connector words. Automated title case is helpful for speed, but some style guides treat words like "and," "for," "to," and "with" differently depending on where they appear.
Sentence case capitalizes the first letter of each sentence while leaving most other words lowercase. It is often easier to read in labels, paragraphs, and plain-language writing.
Sentence case works especially well for UI labels, help text, support articles, and documentation because it feels less shouty than title case. It is also easier to maintain when many headings are written by different people.
URL slugs use lowercase words separated by hyphens. Snake case uses underscores, while camel case removes spaces and capitalizes internal words for programming names.
Use slugs for readable URLs and filenames, snake case for many data fields or scripts, and camel case or Pascal case when a codebase expects that naming style. Matching the surrounding convention is usually more important than personal preference.
Common mistakes include pasting hidden line breaks, leaving double spaces, converting code snippets accidentally, or changing acronyms that should stay uppercase. If you are formatting text for a production page, copy the converted text into the final editor and preview it before publishing.
Watch for product names, legal names, acronyms, and intentional casing such as iPhone, eBay, README, SQL, or OAuth. Automated converters can clean up repetitive text quickly, but final review still matters when the casing carries meaning.
This tool processes text in the browser, but you should still avoid pasting passwords, private keys, medical records, tax documents, or other sensitive information into any web tool unless you are comfortable with the environment and device you are using.