Case Converter

    Convert text to uppercase, lowercase, title case, sentence case, alternating case, or inverse case instantly — no sign-up required.
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    Which case to use

    CaseUse it for
    Title CaseHeadings and titles, in most style guides
    Sentence caseNormal prose, and headings in APA and many house styles
    UPPERCASEShort labels only. Long passages are measurably harder to read.
    camelCaseVariable names in JavaScript, Java, and similar
    snake_caseVariable names in Python, and database columns
    kebab-caseURLs, CSS class names, and file names

    Sentence case cannot know your proper nouns. It capitalises the first word after each full stop and lowercases the rest, so names, places, and the word "I" need a check afterwards.



    Features of the Case Converter

    Nothing Uploaded

    Every conversion happens in your browser the moment you click a case button. Your text is never sent to a server, so pasted drafts and confidential notes stay on your device.

    Seven Case Styles

    Switch between Sentence, lower, UPPER, Capitalized, aLtErNaTiNg, Title, and InVeRsE case, so you can match whatever style a heading, variable name, or file name needs.

    Instant Conversion

    Click a case and the text box updates immediately, with no loading step, so you can try several styles in a row until one reads right.

    Copy, Share, or Download

    Once converted, copy the result to your clipboard, share it directly, or download it as a plain text file, whichever fits how you plan to use it next.

    Your questions, answered

    What is the difference between title case and sentence case?

    Title case capitalises the important words in a heading and leaves short words like "of" and "the" lowercase. Sentence case capitalises only the first word and any proper nouns, exactly as you would write a normal sentence.

    Does this change my original text?

    Only what is in the box. Converting replaces the text shown here, and Undo restores the previous version. Nothing is saved anywhere.

    Why does title case leave some words lowercase?

    Style guides keep articles, short prepositions, and conjunctions lowercase unless they open or close the title. This tool follows that convention, and guides differ on the details, so check yours for anything published.