Punctuation Checker – Add Punctuation to Text

Punctuation Checker is a free online tool that adds punctuation to your text automatically. Paste a text with missing or wrong marks, press Check punctuation, and the tool puts commas, periods, question marks and exclamation points where they belong. It also restores capital letters at the start of sentences.

Add punctuation to text automatically

Most checkers only underline a mistake and leave the fixing to you. This punctuation corrector returns the corrected text, so it also works for text that has no punctuation at all: voice typing, dictated notes, chat messages, subtitles and copied transcripts.

Before: it was raining every day but we still visited the museum the tower and the big market do you know what we liked most the food

After: It was raining every day, but we still visited the museum, the tower and the big market. Do you know what we liked most? The food

How to check punctuation

1. Paste or type your text into the editor.
2. Press Check punctuation. Use Check spelling first if the text may contain typos.
3. Review the highlighted marks. Yellow shows a mark that was added, red shows a likely punctuation error, an orange word had its capital letter changed.
4. Click a highlighted mark to change or remove it, then copy the result.

What the punctuation checker fixes

• Missing commas before conjunctions, after introductory words and in lists.
• Missing periods between sentences and run-on sentences.
• Question marks and exclamation points at the end of a sentence.
• Extra commas that break a sentence.
• Capital letters at the start of a sentence.

Comma checker for essays, emails and posts

Commas cause most punctuation mistakes in English. Use the tool as a comma checker before you send an email, submit an essay or publish a post. The check works in English, Portuguese, Spanish, German, French and Italian.

Need a full review of the text? The grammar checker corrects grammar, spelling and punctuation in one pass.

Frequently Asked Questions

Can it add punctuation to a text without any punctuation?

Yes. The tool reads the text, splits it into sentences and adds commas, periods and question marks. This is useful for dictated text and transcripts.

Is this punctuation checker free to use?

Yes. You can check up to 2,000 characters without an account and up to 3,000 characters after a free registration; in a longer text the beginning is checked. PRO raises the limit to 200,000 characters and removes ads.

What types of punctuation errors can be detected?

Missing and extra commas, missing periods, question marks and exclamation points, and lowercase letters at the start of a sentence.

Does a punctuation checker also check grammar?

The punctuation check works on punctuation marks and capital letters. For grammar and spelling, use the Autocorrect and Check spelling buttons in the same editor.

Is the punctuation checker accurate?

It handles common punctuation mistakes well, but it is an automatic tool. Read the result once before you use it, every change is highlighted.

Can I use this punctuation checker for academic writing?

Yes, it suits essays, research papers and other academic texts. Long papers fit into the PRO limit.

Do I need to install any software?

No, the punctuation checker works in your browser. There are also apps for Android and iOS and a Chrome extension.