Why use this converter?
Convert text to lowercase or UPPERCASE with one click. Useful for normalizing notes, comparing tool outputs, adjusting titles, preparing clean copy-paste. Accents, numbers, punctuation and line breaks are preserved.
How to use
- Paste or type your text.
- Choose lowercase or UPPERCASE.
- Click Convert text then copy the result.
Tip
Select a passage first to convert only part of the text.
Quick use cases
- Standardize domain names and hosts before checking.
- Format log excerpts consistently for comparison.
- Harmonize titles or form fields.
- Clean up a message before sending it to a team.
Important notes
- Do not modify the case of a DKIM key, hash, token, or base64 string as verification would fail.
- Domain names are not case-sensitive but some application content may be.
- If you need to preserve the original case exactly, keep a copy of the initial text.
Privacy commitment
The service sends your input to the CaptainDNS API which performs the conversion. The original text is not retained and only standard operational metrics are logged.