Case Converter

Convert text to uppercase and lowercase online, or switch to Title Case, Sentence case, camelCase, snake_case or kebab-case in one click. Paste your text, pick a style, and copy the result. Free, instant and private.

Change text to uppercase or lowercase in one click, or switch to Title Case, Sentence case, or a code style like camelCase. This case converter doubles as a title case converter and a sentence case tool, and it also makes snake_case and kebab-case for variable and file names. Paste a heading, a sentence or a whole paragraph, pick a style, and copy the result. It rescues text that arrived in all caps just as easily.

  • No sign-up, ever
  • 100% free
  • Nothing uploaded
  • Works offline after first load
  • No limits, no email wall
Read the guide: How to Convert Text to Uppercase & Lowercase
Your text
Result

How to use it

  1. 1

    Paste your text

    Drop in a heading, a sentence, a variable name or a whole paragraph.

  2. 2

    Pick a case

    Choose UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case.

  3. 3

    Copy the result

    The converted text appears instantly. Copy it straight into your doc, code or form.

When it comes in handy

Headings and titles

Fix a heading that came in all caps, or apply consistent Title Case across a list of titles.

Code identifiers

Turn a label into camelCase, snake_case or kebab-case for a variable, key or file name.

Cleaning pasted text

Rescue text someone typed in all caps, or normalise mixed-case data before you import it.

Instant & 100% private — nothing is uploaded

Every keystroke is handled right here in your browser. Your text is never sent to a server, so there is no sign-up, no email wall, and no length cap from us. Load the page once and it keeps working even if you go offline.

Frequently asked questions

What is the difference between Title Case and Sentence case?
Title Case capitalises the first letter of each major word, the way a headline or book title is styled, so "a tale of two cities" becomes "A Tale of Two Cities". Sentence case capitalises only the first letter and any proper nouns, giving "A tale of two cities". Use Title Case for headings and Sentence case for body text and most modern UI copy.
What are camelCase, snake_case and kebab-case for?
These are naming styles used in code. The phrase "user name" becomes userName in camelCase, user_name in snake_case, and user-name in kebab-case. Hyphenated kebab-case is also how clean URLs and CSS class names are usually written.
Does it handle accented letters?
Yes. Accented and non-English letters are converted to their correct upper and lower forms, so names and words with diacritics change case properly rather than being left untouched or stripped.

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