Sentence caseNatural prose and paragraphsLowercases each sentence and capitalizes its first cased letter. Because this can alter names and acronyms, review the result before publishing.
Free generator, runs in your browser
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Free Convert Case Tool
Convert text to sentence case, lowercase, UPPER CASE, capitalized case or title case. Reverse, clean, slugify, find and replace - free and private.
Instant, no account
Nothing is uploaded
Copy or download the result
Your inputConvert Case
Change capitalization
Locale-aware where the browser supports itClean and transform
Use Undo to recover the previous versionFind and replace
Literal text, not a regular expressionReview destructive transforms. Sentence case intentionally lowercases the remainder of each sentence; URL slug, HTML extraction and emoji removal discard information. Undo tracks transformations, while a new manual edit clears the Redo branch.
Private by design: this generator runs entirely in your browser - your text is never sent to Novaverb or any server.
Turn output into a monitored workflow
A Novaverb workspace crawls your live site, verifies these tags and files are actually served, tracks changes over time, and turns findings into assigned work.
How to use it
Convert Case
What is a case converter?
A case converter changes the capitalization of text without requiring you to retype it. Paste text above and choose sentence case, lowercase, uppercase, capitalized case or English title case. Novaverb can also reverse text without breaking joined emoji, create a URL slug, clean spacing, extract readable HTML text, and replace literal text locally in your browser.
Choose the right case for the job
Case names are similar, but their rules and appropriate uses are different.
lower caseNormalize mixed capitalizationMaps every cased character to lowercase using the selected locale. Turkish dotted and dotless I are a key reason to choose the correct language.
UPPER CASELabels and short emphasisMaps every cased character to uppercase. Long uppercase passages can be harder to scan, so use them deliberately rather than as a universal heading style.
Capitalized CaseCapitalize every detected wordUppercases the first cased character of each locale-aware word segment and lowercases the rest. Short words are not excluded.
Title CaseEnglish-style display titlesCapitalizes major words while keeping a short built-in list of English articles, conjunctions and prepositions lowercase unless first or last. Editorial manuals can differ.
aLtErNaTiNgA decorative transformationAlternates only cased grapheme clusters. Spaces, punctuation and joined emoji do not shift the alternating pattern or become corrupted.
InVeRsE CaSeSwap uppercase and lowercaseUppercase letters become lowercase and lowercase letters become uppercase. Uncased numbers, punctuation and symbols remain unchanged.
url-case-slugCreate a clean URL slugNormalizes accents where possible, lowercases text, replaces non-letter separators with hyphens and trims duplicate edge separators. Review brand names and non-Latin URLs.
find → replaceReplace literal text safelyThe find field is treated as plain text, not executable regular-expression syntax. Match case is optional and every replacement can be undone.
A safe workflow for text conversion
Transformations are immediate, so the interface distinguishes reversible casing from information-removing cleanup.
Recommended workflow
- Select the language before converting lowercase, uppercase or word capitalization.
- Apply one transform, inspect names, acronyms, punctuation and line breaks, then copy the result.
- Use Undo and Redo between transformations instead of repasting the source.
Transforms that discard information
Sentence case can remove intentional capitals. URL slug removes punctuation and some distinctions. Remove emoji and Extract text from HTML deliberately discard markup or pictographs. Keep the original source until the converted version has been reviewed.
Unicode-aware, not ASCII-only
Case mappings follow the browser's Unicode and locale-sensitive ECMAScript implementation. Word, sentence and grapheme boundaries use Intl.Segmenter when available. English Title Case is explicitly labeled as an editorial profile because Unicode default titlecasing and publisher style guides are not identical.
Common questions
Convert Case FAQ
What is the difference between Title Case and Capitalized Case?
Capitalized Case capitalizes every detected word. Title Case applies an English editorial profile that keeps selected short articles, conjunctions and prepositions lowercase unless they are the first or last word. Style guides may use different lists and punctuation rules.
Does case conversion work with accented and non-English letters?
Yes. Lowercase and uppercase use locale-sensitive browser mappings when possible. Select the document language for cases such as Turkish dotted I. Some scripts do not have uppercase and lowercase, so their letters remain unchanged.
Will Reverse break emoji or accented characters?
No in modern browsers. Reverse operates on user-perceived grapheme clusters, so joined family emoji, skin-tone sequences and letters with combining accents remain intact. Older browsers use a code-point fallback.
Can I undo and redo a conversion?
Yes. The dedicated Undo and Redo buttons store transformation history. A new manual edit clears the redo branch so the displayed history stays predictable.
Is Create URL slug the same as Spaces to hyphens?
No. Spaces to hyphens only changes whitespace. Create URL slug also lowercases, normalizes accents where possible, removes punctuation separators, collapses repeated hyphens and trims them from both ends.
Does Extract text from HTML sanitize HTML for publishing?
No. It parses pasted HTML and returns readable text while omitting script, style, template and noscript content. It does not return sanitized HTML and should not be used as a security sanitizer.
Is the English Title Case result guaranteed to match APA, AP or Chicago style?
No. Those editorial systems differ on short words, hyphenated compounds and punctuation. The tool provides a practical English profile; review formal publication titles against the required style manual.
Is my data uploaded anywhere?
No. This generator runs fully client-side in your browser. Nothing you type is sent to a server, so it is safe to use on private content.
Is it really free?
Yes, with no account. A Novaverb workspace is only needed when you want to verify, monitor, and track these files on your live site over time.
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