What does this tool do?
Sentence Counter instantly tallies the number of sentences in any text you paste, alongside words, paragraphs, questions, and exclamations. It is a practical aid for writers, students, and content creators who want to monitor sentence length and overall readability.
How to use it
- Paste your text into the input area.
- Adjust the options to fit your needs.
- Copy the processed text.
How sentences are counted
The tool detects sentences by splitting text at periods, exclamation marks, and question marks. This works reliably for most prose, but periods inside abbreviations like "Dr." or "etc." may be read as sentence endings, slightly inflating the count. It also reports average words per sentence, a quick signal that your sentences may need trimming when the number runs high. Everything is computed in your browser, so your text never leaves your device.
Write more readable copy
Long sentences tire readers. Aiming for an average of 15 to 20 words per sentence keeps your writing fluid and scannable. The question and exclamation counters help you gauge tone balance, since an abundance of exclamation marks can make text feel artificial. The paragraph counter lets you check whether your content is broken into digestible chunks. You can copy the full summary with a single click for your notes.
Frequently asked questions
Do periods in abbreviations get counted as sentences?
Yes, periods in abbreviations such as "etc." or "Dr." may register as sentence endings, so counts can be off by a few in such texts.
What does average words per sentence mean?
It is the total word count divided by the sentence count. Lower values indicate shorter, more readable sentences.
How are paragraphs detected?
Blocks of text separated by a blank line are counted as separate paragraphs. Single line breaks are not treated as new paragraphs.
Is Sentence Counter free?
Yes. Sentence Counter and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. Sentence Counter works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.