Sentence Counter
Count the sentences in your text and see how long they are. The tool flags sentences over 25 words and gives a Flesch Reading Ease score and Flesch–Kincaid grade level, so you can make essays, reports and web copy easier to read.
Count sentences
How sentences are counted
A sentence ends at a full stop, question mark, exclamation mark or ellipsis followed by a space or the end of the text. Abbreviations such as “e.g.” or “Dr.” can be counted as sentence ends, so treat the figure as a close estimate for very technical text.
Readability formulas
Flesch Reading Ease
206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words)Flesch–Kincaid Grade Level
0.39 × (words ÷ sentences) + 11.8 × (syllables ÷ words) − 15.59Syllables are estimated from vowel groups, the same approach most readability tools use.
Reading ease scale
| Score | Difficulty | Typical reader |
|---|---|---|
| 90–100 | Very easy | Age 11 |
| 80–89 | Easy | Age 12 |
| 70–79 | Fairly easy | Age 13 |
| 60–69 | Plain English | Ages 13–15; good target for websites |
| 50–59 | Fairly difficult | Ages 15–18 |
| 30–49 | Difficult | University students |
| 0–29 | Very difficult | Graduates and specialists |
Frequently asked questions
What is a good average sentence length?
15–20 words for general writing. Academic writing often runs to 20–25; web copy and instructions work best under 20.
What Flesch score should I aim for?
60 or above for content written for the public. Most news sites score 50–70.
Does the tool store my text?
No, all analysis runs in your browser.