FuYeAI
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Case Converter

12 styles

Convert any text to 12 naming styles at once: lower, UPPER, sentence case, capitalized words, camelCase, PascalCase, snake_case, kebab-case and more.

All styles
lower case
hello world foo bar
UPPER CASE
HELLO WORLD FOO BAR
Sentence case
Hello world foo bar
Capitalize Each Word
Hello World Foo Bar
camelCase
helloWorldFooBar
PascalCase
HelloWorldFooBar
snake_case
hello_world_foo_bar
kebab-case
hello-world-foo-bar
CONSTANT_CASE
HELLO_WORLD_FOO_BAR
dot.case
hello.world.foo.bar
aLtErNaTiNg
hElLo WoRlD-fOo_BaR
iNVERSE (swap)
HELLO WORLD-FOO_BAR
Need headline Title Case rules? Use the Title Case Converter for AP/Chicago headline rules. title-case-converter

    What is Case Converter

    Type once, get 12 naming styles at once: lower, UPPER, Sentence case, Capitalize Each Word, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, alternating and inverse.

    How to use Case Converter

    1. Paste any text — mixed camelCase, hyphens, underscores and digits all handled
    2. All 12 styles render in a table instantly
    3. Click the copy button on the row you need

    Frequently asked questions

    How is this different from the Title Case Converter?

    The Title Case Converter applies headline rules (AP/Chicago) deciding which words capitalize — meant for headlines. This tool targets code naming styles and shows every style at once.

    How are acronyms like XMLHttpRequest handled?

    Word boundaries are split first — an acronym run followed by Capitalized+lower breaks apart (XML + Http + Request) — so XMLHttpRequest correctly becomes xml_http_request.

    What happens to CJK text?

    Chinese, Japanese and Korean characters have no case and are kept as-is; case styles only affect Latin letters.

    Is Case Converter free?

    Case Converter is completely free — open the page and use every feature with no hidden charges.

    Do I need to download or install Case Converter?

    No download or installation is needed. It is an online tool that runs in the browser on your phone, tablet and computer.

    Do I need an account to use Case Converter?

    No. Use the tool right away — no account or sign-in required.

    Does Case Converter work on mobile?

    Yes. The page is fully responsive and works on phones, tablets and desktop browsers.