About CountMySyllables

CountMySyllables counts syllables in words, sentences, and poems, and checks lines against the haiku, iambic pentameter, and rhyme-scheme patterns poets actually use -- built on a real pronunciation dictionary, not a guess dressed up as an exact number.

Where the counts come from

Every word is first checked against Carnegie Mellon University's Sphinx pronunciation dictionary (CMUdict), a freely-licensed phonetic transcription of roughly 126,000 English words built from actual recorded pronunciations, not spelling patterns. A word's syllable count, stress pattern (which syllable is emphasized), and rhyming sound all come directly from that transcription. Only words missing from the dictionary -- proper nouns, made-up words, some rare technical terms -- fall back to a heuristic that counts vowel groups in the spelling with the common documented exception rules (silent trailing "e", "-le" endings, "-es"/"-ed" endings that don't add a spoken syllable). That heuristic is the same general approach most online syllable counters use for every word; published accuracy for it against real English text runs around 85-90%, which is why this site only uses it as a fallback, and marks heuristic-based counts separately in the results wherever it applies.

Pronunciation is genuinely ambiguous sometimes

A dictionary can only encode one pronunciation, but real speech varies by dialect, speed, and speaker. Words like "fire," "hour," and "chocolate" have more than one common pronunciation with different syllable counts -- this site picks the pronunciation CMUdict lists and says so, rather than presenting a single number as an unambiguous fact. The full list of known ambiguous words is on the syllable dictionary page.

What this site doesn't do

It doesn't store what you type, require an account, or claim to resolve every real disagreement about English pronunciation. It also doesn't enforce meter or rhyme as rules to follow -- the haiku and iambic pentameter checkers explicitly note that skilled poets deviate from the strict textbook pattern on purpose, and this tool is for checking where a line stands against that pattern, not for telling you it's wrong.

Who built this

Elbert Ballo built and maintains CountMySyllables. The heuristic-fallback rate above (85-90%) is why heuristic counts are marked separately rather than shown with the same confidence as a real dictionary lookup.