Case Converter
Convert text to uppercase, lowercase, sentence case, title case and more — instantly.
Perfect for fixing copied text, headings, titles and ALL CAPS paragraphs.
Need to check word counts? Use the Word Counter. Want to clean or reformat text? Try the Text Cleaner. For accurate character limits, use the Character Counter.
How to Use the Case Converter
Paste or type your text into the top box, choose the case mode you want (for example UPPERCASE or sentence case), then click Convert Text. The converted result appears in the bottom box and can be copied with one click.
Available Case Modes
- UPPERCASE: Converts all letters to capital letters.
- lowercase: Converts all letters to lowercase.
- Sentence case: Capitalises the first letter of each sentence and lowercases the rest.
- Title Case: Capitalises important words in headings and titles.
- Capitalize Each Word: Capitalises the first letter of every word.
- Fix ALL CAPS text: Detects and fixes shouting paragraphs written in ALL CAPS.
- Inverted case: Swaps the case of each letter (e.g. hELLO wORLD).
When to Use a Case Converter
Fixing copied text
Text pasted from PDFs, emails or chat often has the wrong case or ALL CAPS sections. A case converter lets you fix it in one click.
Formatting headings and titles
Use Title Case or Capitalize Each Word for blog post titles, headings and UI labels.
Normalising data
Case conversion is useful when cleaning CSV data, name lists, tags and labels before importing them into other tools.
FAQ
Does this tool change my original text?
No — your original text stays in the top box. The converted version appears in the bottom box so you can compare or undo easily.
What does “Fix ALL CAPS text” do?
It detects lines written in ALL CAPS and converts them to normal sentence-style text, making them easier to read.
Is my text stored or uploaded?
No — everything runs in your browser. Nothing is sent to a server or saved online.
Does it work with different languages?
Yes — the basic conversions (upper, lower, invert) work with any language that has upper and lower case letters.