All caps block
Before
HELLO. HOW ARE YOU?
After
Hello. How are you?
Sentence Case Converter
Fix paragraphs pasted in ALL CAPS or title case so only the first letter of each sentence is capitalized—the way body copy normally reads.
Sentence Case Converter
Capitalize the first letter of each sentence.
Text to convert to sentence case
First letter of each sentence capitalized
Input: 0 chars
Output: 0 chars
Status: ready
Your text stays in your browser — nothing is uploaded.
How to Use
- Paste body text with incorrect capitalization.
- Check the output for sentence boundaries after periods, question marks, and exclamation points.
- Edit any proper nouns the tool lowercased unintentionally.
- Copy the readable paragraph when satisfied.
Example
Before
HELLO WORLD. THIS IS A TEST. another line here.
Sentence case
Hello world. This is a test. Another line here.
Before and After Examples
Lowercase draft
Before
welcome back. glad to see you.
After
Welcome back. Glad to see you.
Email tone
Before
THANKS FOR REACHING OUT.
After
Thanks for reaching out.
Notes
Before
step one: open file. step two: save.
After
Step one: open file. Step two: save.
What This Tool Does
Sentence case conversion lowercases the bulk of your text then capitalizes the first character after sentence-ending punctuation and at the start of the block. It helps recover readable prose from slides, PDF exports, and forum posts that arrive in inconsistent caps without rewriting each sentence manually.
Guidelines
Tip
Cleaning lecture notes exported from presentation software
Practice
Fixing email threads copied from ticketing systems
Use case
Preparing help-center articles from draft caps lock notes
Note
Normalizing user reviews before publication
Common Uses
Best Practices
Paste body text with incorrect capitalization.
Check the output for sentence boundaries after …
Edit any proper nouns the tool lowercased unint…
Copy the readable paragraph when satisfied.
Cleaning lecture notes exported from presentati…
Fixing email threads copied from ticketing systems
Preparing help-center articles from draft caps …
Normalizing user reviews before publication
Popular Workflows
Notes & Limitations
All processing runs locally in your browser. Results may vary with edge-case characters or very large inputs.
Frequently Asked Questions
How does it detect sentence breaks?
Periods, exclamation marks, and question marks followed by space typically start a new capitalized sentence.
What about abbreviations like U.S.?
Abbreviations inside a sentence may need manual cleanup because a period can look like a sentence end.
Does it handle bullet lists?
Each line or bullet often starts capitalized; review list items with mixed punctuation carefully.
Can I combine this with trim tools?
Yes. Trim Text or Remove Extra Spaces afterward helps when pasted PDFs include odd spacing.