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Words, labels, or paragraphs.
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Case converter
Reshape labels and prose without repetitive editing.
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What does case converter do?
The case converter turns text into uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, or CONSTANT_CASE. The selected result is ready to copy or download.
- Input
- Words, labels, or paragraphs.
- Result
- Text transformed into the selected case.
- Price
- Free
- Account
- Not required
How to use case converter
Choose your settings
Reshape labels and prose without repetitive editing.
Save or copy
Text transformed into the selected case.
A practical tip
Review acronyms and proper names after title- or sentence-case conversion.
When to use case converter
Turn an API field label into a camelCase JavaScript property.
Normalize spreadsheet headings into snake_case before importing a CSV.
Convert a rough heading to title, sentence, or uppercase for a content draft.
Worked example
A concrete case converter example
- Input
- API response_status
- Settings
- camelCase
- Result
- apiResponseStatus
What to expect
How it works
Uppercase and lowercase transform the original string directly. Sentence case lowercases the text and capitalizes the first letter and letters following sentence-ending punctuation. Identifier and title modes first split Unicode letters and numbers at punctuation, separators, and camel-case boundaries, then join the resulting words in the chosen style.
Know before using
Limits and edge cases
- Title and sentence modes do not apply editorial rules for small words, names, or acronyms; “API” can become “Api.”
- camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and title case discard the original punctuation and spacing while tokenizing.
Common questions
Case converter FAQ
Is case converter free to use?
Yes. Case converter is free to use.
Does case converter keep my work private?
Yes. Your work stays private while you use the tool — nothing you enter is uploaded.
Does sentence case preserve existing capital letters?
No. It lowercases the complete input first, then capitalizes sentence starts, so proper names and acronyms may need a manual pass.
How are camelCase words detected?
The converter splits lowercase-to-uppercase transitions and acronym-to-normal-word transitions, as well as spaces and punctuation, before rebuilding the identifier.