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Capitalize Sentences

Start every sentence with a capital letter, automatically.

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How to use the capitalize sentences

Three steps, all in your browser.

  1. 1

    Add your text

    Type, paste or open a .txt file. Press Sample to try an example.

  2. 2

    Pick a case

    Choose the case you want. The result updates instantly.

  3. 3

    Copy or download

    Copy the result in one click or save it as a .txt file.

Capitalize Sentences: what to know

Capitalize Sentences puts a capital letter at the start of every sentence, which fixes text from chat apps, transcripts and notes typed without capitals.

By default it changes only those first letters, so names, acronyms and anything else you capitalized stay as they are. Turn on 'Lowercase the rest' to fix text typed in capitals as well: everything is lowercased first, then sentence starts and the pronoun 'I' (including I'm, I've, I'll and I'd) are capitalized.

A sentence starts after a period, question mark, exclamation mark or ellipsis followed by a space, and after a blank line. Periods in abbreviations such as Dr. and e.g., initials and decimals don't start a new sentence. Sentences that begin with a number are left alone.

Popular uses

  • Tidying transcripts, captions and dictated notes
  • Fixing messages typed in all lowercase
  • Repairing text typed with Caps Lock on
  • Preparing user comments or reviews for display

Tips for the best result

  • With 'Lowercase the rest' on, proper nouns become lowercase; check names afterwards.
  • Quotes are handled: the first letter inside an opening quote is capitalized.
  • Use Remove Extra Spaces first if your text has double spaces after periods.

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Frequently asked questions

Not by default: only the first letter of each sentence changes, so names and acronyms stay as they are. Turn on 'Lowercase the rest' to fix text typed in capitals; the pronoun 'I' is capitalized again.

Periods after common abbreviations, initials and in decimals don't end a sentence, so the next word isn't capitalized by mistake.

No. Every tool runs in your browser, so the text you type or paste is processed on your device and is not sent to our server or stored. Reloading or closing the page clears it.

Yes. Every tool is free with no sign-up and no limits on use. Clearly labeled ads keep it that way.

Yes. The tools work in any modern browser on phones, tablets and computers. Copy and Download work on mobile too.