Convert Case

Convert Case Ltd

About this app

Convert Case transforms your text in seconds. Whether you're writing a professional document, crafting a message, or fixing a copy-paste from the web, Convert Case handles the formatting so you don't have to.

Features:

- Seven conversion modes: UPPERCASE, lowercase, Sentence case, Capitalized Case, Title Case, aLtErNaTiNg cAsE, and InVeRsE CaSe.
- Programming Cases: convert text to camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, or dot.case — built for code identifiers, with a tokenizer that handles spaces, camel humps, uppercase runs (HTMLParser → html_parser), and Unicode letters.
- Fancy Fonts: type your text and instantly preview it in 20 Unicode font styles — Script, Fraktur, Double-Struck, Circled, Squared, Small Caps, and more. Copy or share any style with one tap, and favourite the ones you use most.
- Remove Formatting tool: strip extra spaces, line breaks, HTML tags, URLs, emojis, em & en dashes, punctuation, numbers, and more — multi-select the cleanup options you need and apply them all at once.
- Encoder / Decoder: encode and decode text as Base64, URL percent-encoding, ROT13, UTF-8 hex bytes, HTML entities, binary, and Unicode escapes — pick an encoding, toggle Encode or Decode, and see the result update as you type.
- Sync text between tools: paste once and the same text shows up in Home, Fancy Fonts, Remove Formatting, Encoder, and Programming Cases — switch between tools without re-pasting.
- Available in 14 languages: English (US/UK), German, Spanish, French, Portuguese, Polish, Italian, Hungarian, Slovenian, Greek, Filipino, Hindi, Turkish, and Ukrainian — with an in-app language picker so you're never stuck with the system default.
- Smart locale handling: respects German ß → ẞ, Turkish dotted-I rules, and language-specific small-word lists for proper Title Case in French, German, Spanish, and Italian.
- Settings your way: pick your language, choose System / Light / Dark theme, toggle the background notification, auto-copy converted text to your clipboard, sync text between tools, remember text between sessions, and fine-tune the 3000+ built-in proper-noun corrections with your own custom terms.
- Background reminder: switch to another app with text waiting and Convert Case will quietly remind you to come back and finish the job — turn it off any time.
- Clipboard integration: one-tap paste brings text from any app straight into Convert Case, and one-tap copy sends the result back out.
- One-tap sharing: Send converted text directly to messages, email, or social media without switching apps.
- Quick-launch shortcuts: long-press the app icon to jump straight into Fancy Fonts, Remove Formatting, Encode / Decode, or Programming Cases without first landing on the home screen.
- Works offline: Full functionality without an internet connection, every time.
- Simple interface: No learning curve. Open the app, paste your text, pick your format, done.
- Download Convert Case and stop wasting time on manual reformatting.

Ratings and reviews

Convert Case helps users quickly change text into different writing styles and coding formats without extra effort. It supports uppercase lowercase title case sentence case programming cases and many other conversions. Users can also remove unwanted formatting encode or decode text apply fancy Unicode fonts and share results with one tap. The app works offline supports multiple languages and remembers useful settings for a smoother experience. It is simple to use and saves time when editing or f

Reply: The app starts a background service, not a foreground service as I requested (tested by checking the “Active apps” window in the Quick Tiles area). It also doesn't re-post the notification after returning to the app and switching away from it again, and I think it doesn't start the service at the times I requested. However, none of these are an issue anymore, because you changed the app to persist the text contents on storage (tested with “force stop”). Thanks

Convert Case is a really useful app for anyone who works with text every day. I like how it offers many formatting options along with programming cases fancy fonts and encoding tools all in one place. The interface is simple and everything works offline which makes it even more convenient. Overall it saves me lot of time and makes editing or reformatting text quick and effortless.