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Convert text into any case
Paste your text, click a format, and it is rewritten instantly. Fourteen cases, no retyping, nothing leaves your browser.
What is a text case converter?
A text case converter changes the capitalisation of any text in one click — no retyping needed. Whether you left caps lock on, need a headline in title case, want meme-style alternating text, or need to rename a batch of variables to snake_case, it handles it instantly. Everything runs locally in your browser, so your text is never uploaded anywhere.
How to use
- Type or paste your text into the box at the top.
- Click any case button — your text is rewritten instantly in place.
- Use the toolbar to copy, download, or share the result.
All case types
Every format below is a button in the tool above. Formats with a dedicated page have a full guide, examples, and answers to common questions.
| Format | What it does |
|---|---|
| Sentence case The quick brown fox jumps over the lazy dog | Capitalises the first letter of each sentence only. |
| lower case the quick brown fox jumps over the lazy dog | Converts every letter to lowercase. |
| UPPER CASE THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG | Converts every letter to uppercase. |
| Capitalized Case The Quick Brown Fox Jumps Over The Lazy Dog | Capitalises the first letter of every word, including small ones. |
| Title Case The Quick Brown Fox Jumps over the Lazy Dog | Capitalises major words; keeps small words like "a" and "the" lowercase. |
| aLtErNaTiNg cAsE tHe QuIcK bRoWn FoX jUmPs OvEr ThE lAzY dOg | Alternates lowercase and uppercase for each letter in sequence. |
| InVeRsE CaSe THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG | Flips every character — uppercase becomes lowercase and vice versa. |
| camelCase theQuickBrownFoxJumpsOverTheLazyDog | Joins words with no spaces, capitalising all but the first. |
| PascalCase TheQuickBrownFoxJumpsOverTheLazyDog | Joins words with no spaces, capitalising every word. |
| snake_case the_quick_brown_fox_jumps_over_the_lazy_dog | Lowercase words joined by underscores. |
| kebab-case the-quick-brown-fox-jumps-over-the-lazy-dog | Lowercase words joined by hyphens — ideal for URL slugs. |
| CONSTANT_CASE THE_QUICK_BROWN_FOX_JUMPS_OVER_THE_LAZY_DOG | Uppercase words joined by underscores, for constants and env vars. |
| dot.case the.quick.brown.fox.jumps.over.the.lazy.dog | Lowercase words joined by dots. |
| esreveR txeT god yzal eht revo spmuj xof nworb kciuq eht | Reverses the character order of each line. |
Who uses a case converter
- Writers and editors fixing capitalisation after pasting from PDFs, emails, or CMS exports, and formatting headlines to a house style.
- Developers renaming identifiers between camelCase, snake_case, PascalCase, and CONSTANT_CASE — a whole list at a time.
- Marketers preparing ad copy, subject lines, and social captions where all-caps reads as shouting.
- Students formatting essay titles, citations, and bibliographies.
- Data teams normalising name and address columns before import, and generating URL slugs in bulk.