Simple Case Converter is a free, privacy-first tool for changing letter case and naming styles without rewriting your text.
Paste once, then switch between writing cases (sentence case, Title Case in AP, APA, Chicago and MLA styles, UPPER CASE, lower case, Capitalized Case), fun cases (alternating case and inverse case), developer cases (camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case), and SEO slugs with a bulk mode (one title per line).
Every conversion happens in your browser, so drafts, customer data and code never leave the tab. No account, no server-side processing.
Useful for writers fixing Caps Lock mistakes, marketers formatting headlines, and developers renaming variables. Guides cover uppercase to lowercase in Word and Excel, choosing a naming style, and slugify for SEO.
I built Simple Case Converter because most case tools are buried in ads or send your text to a server. This one runs completely in your browser. It has style-guide Title Case (AP, APA, Chicago, MLA), all the common programming cases, and an SEO slug generator with bulk mode. Free, no signup. Feedback welcome on what to add next.