Sentence Case Converter

Capitalize the first letter of every sentence and lowercase the rest - just the way editors expect. Perfect for fixing all-CAPS or all-lowercase blocks of writing.

Open the Tool

Why use Sentence Case Converter?

Sentence-aware: first letter of each sentence is capitalized

Handles multiple sentences and line breaks correctly

Live preview as you type or paste

100% in-browser - your text never leaves the page

How it works

  1. Paste or type your text into the input box.
  2. The converted result updates live as you type.
  3. Copy or download the output when it looks right.

FAQ

What is sentence case?

Sentence case capitalizes only the first letter of each sentence (and proper nouns, which this tool leaves to you) and keeps the rest lowercase.