Sentence case converter — fix capitalisation automatically
Fix capitalisation instantly — sentence case, title case, upper or lower.
Text with wrong capitalisation
Corrected text
How to sentence case converter in your browser
Turn shouty or inconsistent text into correctly capitalised prose. Sentence case capitalises the first letter after every full stop, question mark, exclamation mark and line break, keeps acronyms such as PDF and NASA untouched, and restores days and months.
- 1Paste the text with wrong capitalisation.
- 2Choose the case you want.
- 3Fine-tune acronym and proper-noun handling.
- 4Copy or download the corrected text.
What this sentence case converter tool does
Five conversions
Sentence case, Title Case, Capitalise Every Word, lower case and UPPER CASE.
Acronym aware
Words written entirely in capitals stay that way, so brand names and abbreviations survive.
Proper noun fixes
Days of the week and month names are recapitalised automatically.
Why people use it
- Free with no account, no email and no watermark
- Runs in the browser — documents stay on your device
- Works on Windows, macOS, Linux, Android and iOS
- Also great for convert text to sentence case and title case converter
Frequently asked questions
Does title case follow style rules?
- Yes — short joining words such as “and”, “of” and “the” stay lower case unless they open the title.
Will it break names?
- Names already written in capitals are preserved; unusual spellings can be adjusted afterwards.
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