Sentence Case Converter
Capitalizes the first letter of each sentence and lowercases the rest — perfect for cleaning up text pasted from all-caps sources or fixing capitalization errors.
Common
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Novelty
Why This Tool Matters
Every so often you'll open an old email, a scanned document, or a legacy database export and find the text trapped in ALL CAPS — readable, but exhausting and unprofessional to leave as-is. Manually retyping capitalization sentence by sentence is slow, and it's just as easy to introduce new mistakes as it is to fix the old ones. This tool corrects it in one pass, so you can drop properly cased, professional text straight into a reply, a report, or a webpage.
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Frequently Asked Questions
What does sentence case do to text in all caps?+−
It lowercases the entire block of text first, then capitalizes only the first letter of each sentence — so text SHOUTED in all caps comes out reading like a normal, properly capitalized paragraph.
Does sentence case capitalize words after a colon or semicolon?+−
No. Only the first letter after a sentence-ending punctuation mark — a period, question mark, or exclamation point — gets capitalized. Words following a colon or semicolon are left lowercase, matching standard sentence-case convention.
How is sentence case different from capitalized case?+−
Sentence case capitalizes only the first letter of each sentence and lowercases everything else. Capitalized Case capitalizes the first letter of every word instead, leaving the rest of each word untouched.
Can I use this to fix text pasted from a PDF or old document?+−
Yes. Text copied from a PDF, scanned document, or old file often loses its original capitalization or comes through in all caps — pasting it in and clicking Sentence case instantly restores normal, readable capitalization.