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Convert text to any case — uppercase, lowercase, title case, sentence case and more. Clean, find & replace, and analyze text in real time.
Type or paste your text into the left input area. Stats update instantly.
Click any case button (UPPERCASE, Title Case, camelCase…) to convert instantly.
Use cleaners to remove spaces, duplicates, special chars. Check live word count and stats.
One-click copy output or download as .txt. Use "Apply" to chain multiple conversions.
Text case conversion changes how the letters in your text are capitalized. Common use cases include formatting headings (Title Case), standardizing database field values (snake_case or camelCase for developers), fixing accidentally caps-locked text (lowercase), and optimizing SEO meta titles (SEO Title Case which skips articles and prepositions).
Regular Title Case capitalizes every word. SEO Title Case (also called AP or Chicago style) skips short, non-essential words like "a," "an," "the," "of," "in," "on," "at," "but," "and," "or," "for," and "nor" — unless they are the first or last word. This matches the style guide used by most publications and search engines for headings.
camelCase starts lowercase then capitalizes each subsequent word (used in JavaScript variables). PascalCase capitalizes every word (used in class names). snake_case uses underscores between lowercase words (used in Python and databases). kebab-case uses hyphens (used in CSS and URLs). All of these formats are available in this converter with one click.
Sentence case capitalizes only the first letter of each sentence, matching how normal prose is written — this is the correct format for body text, descriptions, and most user-facing labels. Title Case, by contrast, is meant specifically for headings, titles, and short standalone phrases where every major word carries visual weight. Using Title Case throughout a paragraph of body text looks cluttered and unnatural, just as using Sentence case for a page heading can look under-formatted compared to standard heading conventions.
tOgGlE cAsE flips the capitalization of every individual letter — uppercase becomes lowercase and lowercase becomes uppercase. It doesn't have a strict formatting use case the way Title Case or Sentence case do; it's mostly used stylistically, for mocking or sarcastic text formatting that's become common in online writing, or occasionally as a quick way to spot patterns in text with inconsistent capitalization.
Text copied from PDFs, scanned documents, or older files often carries formatting problems that aren't about capitalization at all — extra spaces between words, unwanted line breaks in the middle of sentences, or leftover special characters from the original formatting. A text cleaner addresses these issues directly: collapsing repeated spaces into one, removing line breaks that split sentences incorrectly, and trimming leading or trailing whitespace that can cause subtle bugs when the text is pasted into another system, like a form field or a database entry.
Programming languages and frameworks each have their own naming conventions, and mixing them inconsistently makes code harder to read and maintain. JavaScript and Java typically use camelCase for variables and functions, while class names use PascalCase. Python and most SQL databases use snake_case for variables and column names. CSS classes and URL slugs use kebab-case because hyphens are readable and don't require escaping in URLs. Many linters and team style guides enforce these conventions strictly, so converting a phrase into the correct case format — rather than manually inserting underscores or hyphens and adjusting capitalization by hand — saves time and avoids small formatting mistakes during refactoring.
Common questions about how text case conversion and cleaning work in this tool.
Regular Title Case capitalizes every word. SEO Title Case skips short connector words like "a," "the," and "of" (unless they're first or last), matching standard editorial and search engine formatting conventions for headlines and meta titles.
camelCase is the standard convention for variables and function names in JavaScript. Use PascalCase instead for class or component names.
Yes — snake_case is the standard naming convention in Python, and this tool converts any text directly into that format with one click, replacing spaces and punctuation with underscores.
No — all case conversion and text cleaning happens instantly in your browser, so your text is never sent to or stored on any server.
Yes — use the Undo action to revert your most recent conversion or cleaning step without needing to re-paste your original text.
Find & Replace lets you search for every occurrence of a specific word or phrase in your text and swap it with a replacement in one action, rather than manually locating and editing each instance yourself.
The special character cleaner is designed to strip out symbols and non-standard characters while preserving common punctuation like periods, commas, and quotation marks, so normal sentence structure stays intact.
A few everyday scenarios come up again and again for people using a case converter. The first is fixing Caps Lock mistakes — instead of retyping an entire paragraph typed accidentally in all caps, converting it to sentence case restores normal readability in one click. The second is standardizing content pulled from multiple sources: text copied from different websites, PDFs, or documents often arrives with inconsistent capitalization, and running it through a single case format cleans it up instantly rather than manually correcting each inconsistency. The third is formatting headlines correctly for a blog, article, or landing page, where using SEO Title Case avoids the common mistake of capitalizing small connector words that professional style guides intentionally leave lowercase. The fourth is renaming variables during code refactoring, where converting a plain-English phrase into camelCase, snake_case, or kebab-case is far faster than manually retyping the phrase and inserting the correct separators and capitalization by hand.
Beyond case conversion, tracking word count, character count, sentence count, and paragraph count in real time is useful well beyond just meeting a length requirement. Writers working within a strict word limit — for an essay, an application, or a social media post — can see immediately how edits affect their count without needing to run a separate word-count check. Character count with and without spaces is particularly useful for platforms with strict character limits, like meta descriptions or SMS-based systems, where every character counts toward a hard limit. Sentence and paragraph counts give a quick sense of a document's structure and pacing, which can be a useful signal when editing for readability.