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Case Converter
Flip text between UPPER, lower, Title Case, camelCase, snake_case, and more — click any format to convert and copy instantly.
How It Works
Each case conversion first tokenises your input into words — splitting on spaces, hyphens, underscores, dots, and camelCase boundaries — then joins them with the appropriate separator and applies capitalisation rules. Click any format card to select it and instantly copy the converted result to your clipboard. Everything runs in your browser.
How to Convert Text Letter Case
01
Enter Text
Paste your text or titles into the converter box.
02
Select Case Style
Choose UPPERCASE, lowercase, Title Case, Sentence case, camelCase, or snake_case.
03
Copy Result
Click copy to clipboard and paste your formatted text anywhere.
Intelligent Case Transformation
The case converter analyzes word delimiters, capitalizes title words according to Chicago/AP style guidelines, and handles programming identifier conventions like camelCase and kebab-case.
Frequently Asked Questions
What case styles are available?
UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, camelCase, snake_case, and kebab-case.
Does Title Case skip small words like 'and', 'the', and 'in'?
Yes. Major title styling rules automatically keep conjunctions and prepositions lowercase unless they start the sentence.
Is there a limit on text length?
You can convert thousands of lines or entire articles instantaneously.
Is my text uploaded anywhere?
Never. All string manipulation executes in local browser JavaScript.
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