StatusQueen's UPPERCASE to lowercase tool is the focused, advanced version of a case converter. The lowercase button is its primary action, but you can also pick UPPERCASE, Sentence case, Title Case or Capitalized Case from the same row. What makes this page different from a generic case converter is the Advanced options panel — three smart switches that change how the conversion happens.
The five case styles
- lowercase — converts every letter to lowercase. The default action.
- UPPERCASE — converts every letter to uppercase.
- Sentence case — capitalizes the first letter after each
.!?and lower-cases the rest. - Title Case — capitalizes major words, keeps articles/short prepositions lowercase (e.g. "The Catcher in the Rye").
- Capitalized Case — capitalizes the first letter of every single word.
Advanced options — what they do
Preserve acronyms
When this option is on, sequences of three or more uppercase letters in a row (like NASA, USA, IBM, HTML, JSON) are kept uppercase even when you click lowercase or Sentence case. Use it when you want to lowercase a paragraph but not break the abbreviations inside it. Example:
Off: "the nasa rover landed in 2021"
On: "the NASA rover landed in 2021"
Keep URLs and emails as-is
When on, anything that matches a URL pattern (http://, https://) or an email address (local@domain.tld) is left exactly as it was. Useful for cleaning copy that mixes prose with technical references — you can lowercase the sentence without breaking the link.
Off: "see https://stripe.com/docs"
On: "see https://Stripe.com/Docs" (URL kept original)
Process each line independently
Treats every line in your text as if it were a separate piece of text. Most useful with Sentence case and Title Case, which would otherwise only capitalize the first word of the entire document. With this option on, every line gets its own capitalization rules applied.
Common workflows: cleaning a CSV column, normalizing a list of menu items, formatting a multi-line JSON dump.
Using options together
The three options stack. Turning on all three with lowercase means: lowercase everything except acronyms, except URLs/emails — applied line by line. The "N active" badge in the panel header tells you at a glance how many advanced switches are currently on.
Privacy
Conversion runs entirely in your browser using built-in JavaScript. There is no upload to a server, no logging, no analytics on your text. For details, see our Privacy Policy.
When to use this vs Convert Case
- This page — when you need fine-grained control over what stays untouched (acronyms, URLs, emails) or want per-line behaviour.
- Convert Case — when you want the broadest selection of case styles (alternating, inverse, etc.) without the advanced switches.
Frequently Asked Questions
How do I convert uppercase to lowercase?
Paste your UPPERCASE text into the box and click "lowercase". The text in the box becomes lowercase. The other case buttons work the same way — pick the result you want.
What does "Preserve acronyms" do?
When on, sequences of three or more uppercase letters in a row (NASA, USA, IBM, HTML) are kept uppercase even when you click lowercase or Sentence case. Use it when you want to lowercase a paragraph but not break the abbreviations inside it.
What does "Keep URLs and emails as-is" do?
When on, anything that looks like an http:// / https:// URL or an email address is left exactly as it was, even when other text around it gets lowercased. Useful for cleaning copy that mixes prose with technical references.
What does "Process each line independently" do?
Treats each line as a separate piece of text. Useful for lists, CSV columns or log lines where every line is its own self-contained item — Sentence Case and Title Case will then capitalize the start of every line, not just the first one in the document.
Is my text uploaded anywhere?
No. The conversion runs entirely in your browser. Your text never leaves your device — nothing is uploaded, logged, or sent to a server.