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Free Uppercase & Lowercase Converter
Convert text between uppercase, lowercase, title case and sentence case instantly and privately.
Your input is processed only as required by this tool.
Free Uppercase & Lowercase Converter
Case conversion is useful when cleaning copied text, headings, lists, form values and content drafts. This tool applies the selected transformation directly in the browser and returns the converted text ready to copy.
How to use it
- Enter the values required by the tool.
- Run the calculation or transformation locally in your browser.
- Review and copy the result; your input is not uploaded to the Ciatto Tools API.
How to read the result
Uppercase and lowercase conversions follow the browser's locale-aware Unicode behavior. Title and sentence modes are convenience transformations rather than grammar-aware editorial tools.
Limitations
Title capitalization rules differ between languages and style guides, so automatically generated title case may require manual editing for articles, prepositions, acronyms and proper names.
Frequently asked questions
Does the converter upload my text?
No. The transformation runs locally in your browser.
Is title case grammar-aware?
No. It is a lightweight capitalization helper and may need manual editing.