Readability Checker (Flesch)
Score your writing's readability with Flesch Reading Ease and Flesch–Kincaid grade level. See sentence and syllable stats. Always private.
Runs in your browser — nothing uploaded
Text
Measure how easy your writing is to read. Paste any text to get its Flesch Reading Ease score and Flesch–Kincaid grade level, plus sentence and syllable stats — so you can tune your copy to match your audience.
Private by design — your data never leaves your device
How to use it
No account, no upload — it all happens on your device.
1
Paste your writing into the box.
2
Read the Flesch Reading Ease score and its plain-language band.
3
Check the Flesch–Kincaid grade level.
4
Shorten sentences and swap long words to raise the score.
Reading ease bands
What the 0–100 score means.
| Score | Reading level |
|---|---|
| 90–100 | Very easy — 5th grade |
| 70–89 | Easy — 6th to 7th grade |
| 60–69 | Plain English — 8th to 9th grade |
| 30–49 | Difficult — college level |
| 0–29 | Very difficult — graduate / technical |
How to raise your score
- Shorten sentences. Long sentences hurt the score most — break compound sentences into two.
- Prefer short words. Swap multi-syllable words for simpler ones (use instead of utilize).
- Aim for 60–70 for general web copy; most popular writing lands around an 8th-grade level.
Frequently asked
What is Flesch Reading Ease?
It's a 0–100 score based on average sentence length and syllables per word. Higher is easier: 60–70 is plain English readable by most adults, 90+ is very easy, and below 30 is very difficult (academic or technical).
What's the grade level?
The Flesch–Kincaid grade level translates the same sentence-length and syllable data into a US school grade. A grade of 8 means an average 13–14-year-old should understand the text.
Is the syllable count exact?
Syllables are estimated with a vowel-group heuristic, which is accurate for most English words but can miss unusual spellings. Treat the score as a strong guide, not a precise linguistic measurement. Everything runs in your browser.