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Case Converter

Fix the capitalization in a heading, email, or copied paragraph.

AI Text Kit never saves your text. Close the tab to clear your work.

Line breaks are preserved across conversions.

Active: lowercase

Output updates instantly as you type.

UPPERCASE: All letters become uppercase.
lowercase: All letters become lowercase.
Title Case: Capitalize the first letter of each word.
Capitalize Each Word: Capitalize every word consistently.
Sentence case: Capitalize the first letter of each sentence.
Fix capitalization after period: Capitalize after periods without lowercasing the rest.
Toggle Case: Swap each letter's case.
Trim extra spaces: Collapse extra spaces and trim each line.
camelCase → snake_case: Convert camelCase identifiers to snake_case.
snake_case → camelCase: Convert snake_case identifiers to camelCase.

Try next

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Use cases for this tool

Use case guides to fix case fast.

Convert Text to Uppercase

Convert text to uppercase for headings, labels, or emphasis.

Convert Text to Lowercase

Convert text to lowercase for consistent formatting and data cleanup.

Title Case Generator

Convert headings to title case for consistent presentation.

Sentence Case Converter

Convert paragraphs to sentence case for readable body copy.

Capitalize Each Word

Capitalize each word for labels and formatted lists.

Fix Capitalization After Periods

Fix sentence starts without changing the rest of the casing.

Toggle Case for Text

Swap letter casing to create alternating case effects.

Trim Extra Spaces in Text

Remove extra spaces while keeping casing consistent.

View all case & format use cases

Tips

Keep title case consistent

Standardize headings and titles before publishing.

Title case generator
Fix spacing and casing together

Tidy extra spaces when you paste from documents.

Clean text quickly
Validate length after editing

Measure the final output for ads and snippets.

Open word counter

FAQ

What is the difference between title case and sentence case?

Title case capitalizes each word, while sentence case capitalizes only the first word of each sentence.

Does the converter keep line breaks?

Yes. The converter keeps line breaks and formatting intact.

Can I convert large blocks of text?

Yes. The tool supports long text and updates the output instantly.

Is this tool free to use?

Yes. It runs in your browser and does not require sign-up.

Try also:Case Style ConverterWord CounterText Cleaner