How does the syllable counter work?

The algorithm breaks down each word into phonetic vowel groups (a, e, i, o, u, y), adjusts for diphthongs (ou, ea, ai), handles silent trailing "e", and applies English linguistic rules.

Can I use this to verify a Haiku poem (5-7-5 syllables)?

Yes. You can paste each line of your poem separately or as a stanza to verify that each line matches the required 5, 7, and 5 syllable counts.

What is a polysyllabic word?

A polysyllabic word is a word containing three or more syllables (e.g. "com-pu-ter", "in-ter-na-tion-al"). A high percentage indicates denser, more technical writing.

What is a good Flesch Reading Ease score?

Scores between 60 and 70 are considered standard readable English (understood by 13-15 year old students). Scores above 80 are very easy, while scores below 50 are academic/technical.

Is my poetry or writing text confidential?

Yes. All text processing and syllable counting are computed in your local browser memory. No data is ever saved or transmitted.

Syllable Counter & Readability

Count syllables in words and full text with Flesch Reading Ease score online free.

100% free
Private in browser
No signup
No watermarks

Samples:

Total Syllables

syllables

Total Words

words

Avg Syllables / Word

1.31

ratio

Hard / Poly Words

3+ syllables

Text / Poem Input

Flesch Reading Ease Score

92/ 100 (Very Easy (5th Grade level))

Recommended Level

5th Grade

Word Syllable Breakdown

Sample of unique words in text

an1 syl

old1 syl

silent2 syls

pond1 syl

a1 syl

frog1 syl

jumps1 syl

into2 syls

the1 syl

splash1 syl

silence2 syls

again2 syls

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About Syllable Counter & Readability

Syllable Counter on TheToolss gives poets, song writers, students, and educators precise syllable metrics for individual words or long articles. Check syllable counts for 5-7-5 haikus and sonnets, count complex polysyllabic words (3+ syllables), and calculate official Flesch-Kincaid Reading Ease scores. All calculations run in your browser.

How to use Syllable Counter & Readability

Paste or type your text, poem, lyrics, or article into the input area.
View the total syllable count, average syllables per word, and polysyllabic word count.
Review the calculated Flesch Reading Ease score and grade level recommendation.

Key features

Accurate syllable counter handling English vowel diphthongs and silent e
Counts total syllables, average syllables per word, and polysyllable words
Official Flesch Reading Ease Score and Flesch-Kincaid Grade Level formulas
Perfect for Haiku (5-7-5), Limericks, lyrics, and academic writing readability
100% private in-browser text analysis without storing your content

Frequently asked questions

How does the syllable counter work?: The algorithm breaks down each word into phonetic vowel groups (a, e, i, o, u, y), adjusts for diphthongs (ou, ea, ai), handles silent trailing "e", and applies English linguistic rules.
Can I use this to verify a Haiku poem (5-7-5 syllables)?: Yes. You can paste each line of your poem separately or as a stanza to verify that each line matches the required 5, 7, and 5 syllable counts.
What is a polysyllabic word?: A polysyllabic word is a word containing three or more syllables (e.g. "com-pu-ter", "in-ter-na-tion-al"). A high percentage indicates denser, more technical writing.
What is a good Flesch Reading Ease score?: Scores between 60 and 70 are considered standard readable English (understood by 13-15 year old students). Scores above 80 are very easy, while scores below 50 are academic/technical.
Is my poetry or writing text confidential?: Yes. All text processing and syllable counting are computed in your local browser memory. No data is ever saved or transmitted.