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English case converter
Convert English text to uppercase, lowercase, capitalized words or sentence case. Preserve line breaks and numbers, then copy the result.
Result
This tool does not send entered values or selected files to a server. Save any results you need before closing the tab.
How to use
- Paste the text you want to convert.
- Choose the capitalization style.
- Generate the result and check proper names and abbreviations before copying.
Worked example
Capitalizing words changes hello WORLD to Hello World. Sentence case changes hello. welcome back! to Hello. Welcome back!
Method and limitations
Uppercase, lowercase and word capitalization operate on basic A–Z letters. Sentence mode lowercases the text and capitalizes an English letter at the start or after a period, question mark, exclamation mark or newline.
This is not a grammar-aware editor or translator. Acronyms such as NASA and brand spellings such as iPhone are not automatically preserved. Up to one million characters are supported.
Frequently asked questions
Does it capitalize Korean, Chinese or Japanese?
Those scripts do not have the same uppercase/lowercase distinction. They stay as written; basic English letters mixed into the text follow the selected style.