This text converter applies sentence, title, lower, upper, or capital case to Unicode text while preserving spacing, punctuation, and newlines.
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Sentence Case Converter
Convert Unicode text to sentence, title, lower, upper, or capital case while preserving spacing and punctuation.
Calculator
About this calculator
Formula notes
Apply locale-aware Unicode case mapping plus sentence-boundary and title-style rules to each word.
Worked examples
- Example: 'hello WORLD. THIS is 3.14 units.' becomes 'Hello world. This is 3.14 units.' in sentence case.
- The AP title style turns 'chapter 3: the final day' into 'Chapter 3: The Final Day'.
How to use it
- Paste or type the source text.
- Choose a case type and, for title case, a style.
- Read the converted text and character and word counts.
Frequently asked questions
Does this handle Unicode and abbreviations?
It uses Unicode case mapping and handles common abbreviation and decimal patterns such as Dr. and 3.14.
Which title-case styles are supported?
AP, APA, MLA, AMA, Chicago, Bluebook, and New York Times conventions are available.
Limits and interpretation
- Sentence boundaries and abbreviations are handled heuristically; unusual names, mixed languages, and domain-specific terms may not follow the intended rule.
- Title-case styles encode common editorial conventions and may differ from a specific publisher's house style.