Free Sentence Case Converter

Turn messy capitalization into calm sentence case — only the first letter of each sentence gets a capital.

Word Counter

Runs entirely in your browser — paste text and watch the results update instantly. Nothing is uploaded.

100% Client-Side — Your text stays in your browser. Nothing is uploaded.

How to use this tool

  1. 1

    Paste your text

    Ideal for notes written in caps lock, imported subtitles or inconsistently cased drafts.

  2. 2

    Automatic sentence starts

    The tool lowercases everything, then capitalizes the first letter after each . ! ? ؟ ۔ ending — including new lines.

  3. 3

    Copy or download

    Take the cleaned paragraphs straight into your document.

Key features

InputOutput
hello there. HOW ARE YOU?Hello there. How are you?
FIRST LINE then second lineFirst line / Second line — new lines start sentences
wait... REALLY?!Wait... Really?! — repeated marks handled
أهلاً! مرحباArabic ؟ ! endings respected

Privacy: your text never leaves your browser

Every Toolflect Text Tool is 100% client-side. The moment you type or paste text, it is analyzed by JavaScript running inside this browser tab. Your text is never sent to our servers, never stored in a database, and never shared with any third party or AI service.

  • No uploads, no accounts, no sign-up
  • No cookies or tracking of your text
  • Works offline once the page has loaded
  • Close the tab and your text is gone from memory

You can even verify it yourself: open your browser's developer tools, switch to the Network tab, and type into the tool — the only requests you will ever see are this page's own static files (HTML, CSS, JavaScript). Nothing you type is ever transmitted.

Frequently asked questions

Will it keep acronyms like NASA?
No — sentence case intentionally lowercases everything except sentence starts. Convert first, then re-uppercase special names if needed.
How are sentence ends detected?
Using the same smart engine as our Sentence Counter: punctuation endings, repeated-mark collapsing and abbreviation awareness.
Does a new paragraph get a capital?
Yes — line breaks act as sentence boundaries for capitalization.
Is anything uploaded?
Never; all processing stays in this tab.

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