Case Converter - DigiKitApp

Convert text to UPPERCASE, lowercase, Title Case or Sentence case.

When should you use this?

Use this when you need to quickly convert text into different case styles, uppercase, lowercase, Title Case.

When shouldn't you use this?

If you're doing programming variable naming (camelCase, snake_case), this tool is built for general text conversion; a dedicated code-editor conversion extension may suit that better.

Step-by-step

Paste the text you want to change into the Text field.
Pick a Mode: upper makes everything capital, lower makes everything small, title capitalizes the first letter of each word, and sentence capitalizes only the start of each sentence.
Click Run and copy the text from the result area.
If some words need different casing, such as names or acronyms, fix those by hand after pasting.

Example

An online store receives a supplier file where every product name is in capitals, like MEN'S COTTON PRINTED T-SHIRT. On the site, those titles look like shouting. Paste the list in, choose title, and only the first letter of each word stays capitalized, which reads much better. For product descriptions, sentence is the more natural choice since it reads like a normal paragraph. All that's left is checking brand names and size codes that should stay in capitals.

Upper and lower case conversions

The tool converts text to UPPER CASE, lower case, Title Case or sentence case. On the Turkish page conversion follows Turkish rules: “i” becomes “İ” when capitalised and “I” becomes “ı” when lowercased (istanbul → İSTANBUL, IŞIK → ışık). On the English page English rules are used. Title mode capitalises the first letter of each word and lowercases the rest; sentence mode capitalises the first letter after each period, exclamation mark and question mark.

When converting

Which rule applies depends on the language of the page. If you convert Turkish text on the English page, “i” becomes “I”; use the Turkish page for Turkish text.
Title mode lowercases the whole word first, so “iPhone” → “Iphone” and “PDF” → “Pdf”. Fix brands and abbreviations by hand afterwards.
Sentence mode may also capitalise after a period inside an abbreviation (for example “e.g. a” → “E.G. A”); read the result.
In code and variable names (camelCase, snake_case) letter case is meaningful; don't convert such text.

Things to keep in mind

Turkish has two separate i letters, dotted and dotless, and their capitals are İ and I. Some conversions turn istanbul into ISTANBUL instead of İSTANBUL, so check those words if you work with Turkish text.
Sentence mode can lowercase names in the middle of a sentence. Review people, places and brands after converting.
Many English style guides keep short words like and, of and the lowercase in titles. If title mode capitalizes every word, adjust them to match your house style.
Long passages in all caps are harder to read, and some screen readers may spell them out letter by letter. Use uppercase sparingly.

Related ready-made prompts: Editing, Summary & Translation Prompts.

Frequently asked questions

Is my data stored?

No, none of the data you enter is sent to a server or stored.

Is this tool free?

Yes, completely free and no account required.

How long does it take to get a result?

Most operations complete instantly; larger files may take a few seconds.