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Text Case Converter
A text case converter rewrites pasted text into a different capitalisation style in one click, so a headline can become Title Case, a slug can become kebab-case, and a sentence pulled from all-caps can be repaired without retyping a single word. SEO and content work runs on consistent casing: titles, URL slugs, anchor text, alt attributes, and structured-data values all read better and validate cleaner when their case is deliberate rather than accidental.
This tool converts between ten case styles instantly and entirely in your browser, including UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, aLtErNaTiNg, and inverted case. It is free, needs no sign-up, and shows a live character, word, and line count as you work, so the result is ready to copy the moment it looks right.
🔒 Private: everything runs in your browser. Nothing you paste is uploaded.
How to use the text case converter
Paste or type into the text box, click the case you want, and the result updates instantly below with a live count. Copy it in one click, then switch case styles as many times as you need.
Title Case versus Sentence case, and when each one fits
Title Case capitalises the first letter of every word and is the natural fit for page titles, headings, and navigation labels where each word should stand out. Sentence case capitalises only the first letter of each sentence and reads more naturally in meta descriptions, intro paragraphs, and body copy. The converter handles both correctly: Title Case lifts every word’s initial letter while lowercasing the rest, and Sentence case detects each terminator so a paragraph with several sentences capitalises each opening word, not just the first.
Programmer cases for slugs, variables, and class names
camelCase, PascalCase, snake_case, and kebab-case are the casing conventions of code and clean URLs. kebab-case joins words with hyphens and is the standard for SEO-friendly slugs, while snake_case uses underscores for variables and database fields. camelCase and PascalCase strip the separators entirely. The converter splits intelligently on whitespace, punctuation, and existing camelCase boundaries, so “Free SEO Tools 2026” becomes free-seo-tools-2026 or freeSeoTools2026 cleanly, ready to paste straight into a URL, a config file, or a code base.
Why everything stays in your browser
Every conversion runs as client-side JavaScript on your own machine, so the text you paste is never sent to a server, logged, or stored anywhere. That matters when the text is an unpublished title, a client brief, a draft email, or anything confidential. The tool keeps working after the page has loaded even with the connection dropped, because there is no network call to make. Paste freely, convert as many times as you like, and close the tab knowing nothing left it.
Text case converter frequently asked questions
Q1What is the difference between Title Case and Sentence case?
Title Case capitalises the first letter of every word, which suits headings, page titles, and labels. Sentence case capitalises only the first letter of each sentence and reads more naturally in body copy and meta descriptions. This converter applies each correctly, so Sentence case capitalises every sentence opener in a multi-sentence paragraph, not merely the very first word.
Q2Which case should I use for a URL slug?
Use kebab-case, where words are lowercased and joined by hyphens, such as text-case-converter. Search engines treat hyphens as word separators, so slugs stay readable and crawlable. Underscores in snake_case are not split the same way, and mixed or upper case in URLs can cause duplicate-content and link-matching issues on case-sensitive servers, so kebab-case is the safe default.
Q3Does this tool send my text to a server?
No. Every transform runs in your browser with client-side JavaScript, so nothing you paste is uploaded, logged, or stored. The converter keeps working offline once the page has loaded because it makes no network requests. That makes it safe for confidential drafts, unpublished titles, client briefs, and any text you would rather not send anywhere.
Q4How does the converter handle camelCase and snake_case splitting?
It splits text into words on whitespace, punctuation, and existing camelCase or PascalCase boundaries, and also between letters and digits. So input like fooBar baz_1 is read as the words foo, bar, baz, and 1 before being rejoined in the case you pick. This lets you convert between programmer cases reliably, even when the source already mixes separators and capitalisation.
Q5Is there a limit on how much text I can convert?
There is no fixed character limit. Because the work happens in your browser rather than on a server, you can convert a single slug or several paragraphs of copy in one pass. Very large documents depend on your device’s memory, but for ordinary SEO and content tasks, titles, descriptions, lists, and article sections convert instantly with a live character, word, and line count.
