Why use a case converter?
Received an all-caps text that needs to be readable? Need to normalize data before an import? The case converter transforms your text to lowercase or UPPERCASE in one click.
Three common use cases:
- Normalize data → Standardize names, emails, or identifiers before processing
- Fix poorly formatted text → Transform an all-caps block into readable text
- Prepare content → Harmonize case of titles, form fields, or log excerpts
How to use the converter in 3 steps
Step 1: Paste the text
Paste or type your text in the input area. The tool accepts:
- Multiple paragraphs
- Line breaks (preserved)
- Special characters and accents
Step 2: Choose conversion
Select the conversion type:
- lowercase:
EXAMPLE→example - UPPERCASE:
example→EXAMPLE
Step 3: Copy the result
The converted text displays instantly. Click the copy button or manually select the result.
What is typographic case?
Case refers to the distinction between uppercase (capital) and lowercase letters. The term comes from traditional printing where characters were stored in different "cases."
In computing, case affects:
- String comparisons (case-sensitive or not)
- Passwords and identifiers
- Certain data formats (JSON, XML, filenames)
Conversion example:
Input: "Hello, How Are You?"
lowercase: "hello, how are you?"
UPPERCASE: "HELLO, HOW ARE YOU?"
Points to consider
| Situation | Recommendation |
|---|---|
| DKIM keys, tokens, hashes | Do not convert - verification would fail |
| Passwords | Case is significant - do not modify |
| Domain names | Not case-sensitive, but prefer lowercase |
| Important original text | Keep a copy before conversion |
FAQ - Frequently asked questions
Q: Does the converter preserve accents?
A: Yes. Accented characters like é, è, ê, ç, ñ, ü are correctly converted. café becomes CAFÉ in uppercase.
Q: Can I convert very long text?
A: Yes, the tool accepts several thousand characters. For very large texts, split them into multiple parts.
Q: Is my text stored?
A: No. Text is processed then immediately deleted from our servers. No content is retained.
Q: Is punctuation modified?
A: No. Only letters are converted. Numbers, spaces, and symbols remain unchanged.
Complementary tools
| Tool | Purpose |
|---|---|
| Slug Generator | Transform a title into a clean URL |
| Base64 Encoder | Encode or decode a Base64 string |
| Word Counter | Count words and characters in text |
Privacy commitment
The service sends your input to the CaptainDNS API for conversion. The original text is not retained and only standard operational metrics are logged (processing time, input size).