Case converters
Change the capitalization of any text. Browse 13 free tools below.
- Case ConverterSwitch text between UPPER, lower, Title, Sentence and alternating case.Case
- Sentence Case ConverterCapitalize the first letter of each sentence and lowercase the rest.Case
- Lowercase ConverterTurn every letter into a lowercase letter.Case
- Uppercase ConverterTurn every letter into a capital letter.Case
- Capitalized Case ConverterCapitalize the first letter of every word.Case
- Alternating Case ConverterAlternate between lower and upper case, letter by letter.Case
- Title Case ConverterCapitalize headings and keep small words lowercase.Case
- Inverse Case ConverterFlip upper case to lower case and lower case to upper case.Case
- camelCase ConverterConvert text to camelCase for variable names.Case
- PascalCase ConverterConvert text to PascalCase for classes and components.Case
- snake_case ConverterConvert text to snake_case for Python and databases.Case
- kebab-case ConverterConvert text to kebab-case for URLs and CSS classes.Case
- dot.case ConverterConvert text to dot.case for config keys.Case
About case converters
Change the capitalization of any text. This collection has 13 free tools, including Case Converter, Sentence Case Converter, Lowercase Converter, Uppercase Converter, Capitalized Case Converter and more. Letter case matters more than it seems. Consistent capitalization makes headlines readable, code predictable and data easier to search. Doing it by hand is slow and error-prone, especially when a draft has hundreds of words typed in the wrong case.
This tool is part of the ATN Tools case collection. Every converter runs locally in your browser with no sign-up, so you can paste, convert and copy in a couple of seconds on any device.
Case converters FAQ
What are case converters?
Change the capitalization of any text. Every tool in this collection is free and needs no sign-up.
How many case converters are available?
There are 13 tools in this collection today, and new ones are added regularly.
Are these tools free?
Yes. They are free with no limits, watermarks or accounts.
Is my data private?
Yes. The conversion happens in your browser, so your text is never uploaded or stored.
Do the tools work on mobile?
Yes. Every tool is responsive and works in modern mobile and desktop browsers.
What can I use case converters for?
Fixing text typed with Caps Lock left on; Formatting headlines, titles and subject lines; Naming variables, files and CSS classes consistently; Cleaning up copied text before publishing.