Case converter

Change letter case

How to use

Paste the Text

Enter the content you want to transform.

Choose a Mode

Uppercase, lowercase, title case, sentence case, or reverse case.

Copy

Copy the result to the clipboard.

Why CodeGrid Tools?

Your files stay private

Processing runs in your browser. Files are not uploaded to our servers.

Fast and simple

No install required; start instantly in the browser.

English & Turkish

Use the site in English or Turkish—locale follows your preference.

Free to start

Core features are free. No credit card for basic use.

About the Letter Case Converter

With the letter case converter, you can reformat your content according to Turkish language rules directly in the browser.

It offers quick correction for editors, CMS tools, and email drafts. It can also be used together with slug and cleanup utilities.

FAQ

Are Turkish İ and i converted correctly?

Yes. Conversions use the tr-TR locale, and title case and sentence case follow Turkish language rules.

Is multi-line text supported?

Yes. Paragraphs are preserved, and each line or block is transformed according to the rule you choose.

What about text that contains HTML tags?

The tool works on plain text. If you need to preserve tags, keep a backup first.

Related tools

Turkish characters

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Slug generator

Create SEO-friendly URL slugs

What this tool does

Case conversion normalizes uppercase, lowercase, and Turkish-aware title modes. CodeGrid Tools transforms locally with privacy intact. Useful after imports. Pair with slug and cleanup tools.

Secure. Secure processing

Your data is processed in your browser; content is not sent to the server.