Poem Form Identifier

The forms it can identify

A form is identifiable from a pasted text only when its definition is a measurable rule: a line count, a syllable pattern, a rhyme scheme, a refrain schedule. These forms qualify, and each rule is taken from the Academy of American Poets glossary entry linked in the results:

• Blank Verse: Poetry that does not rhyme but follows a regular meter, most commonly iambic pentameter: five iambic feet, ten syllables per line. Detected as mostly-unrhymed lines that scan as iambic pentameter.
• Haiku: A three-line poem with seventeen syllables, written in a 5/7/5 syllable count. Modern haiku often break the syllable pattern, so a near miss is reported as such rather than ruled out.
• Sonnet: Fourteen lines of iambic pentameter. The Shakespearean sonnet rhymes abab cdcd efef gg; the Petrarchan sonnet rhymes abba abba in the octave with a cdecde or cdcdcd sestet.
• Ballad: Often constructed in quatrain stanzas, each line containing as few as three or four stresses, rhyming either the second and fourth lines or all alternating lines.
• Villanelle: Five tercets followed by a quatrain, with two repeating rhymes and two refrains: the first and third lines of the opening tercet repeat alternately as the last lines of the following stanzas, then close the poem as its final two lines.
• Limerick: Five lines: the first two rhyme with each other, the third and fourth rhyme together, and the fifth repeats or rhymes with the first, in a bouncing anapestic rhythm. The 7-10 and 5-7 syllable ranges follow this site's reference entry for the form.
• Sestina: Thirty-nine lines: six six-line stanzas repeating the six end-words of the first stanza, then a three-line envoi in which all six recurring words appear. The lines may be of any length.
• Pantoum: A poem of any length in four-line stanzas: the second and fourth lines of each stanza serve as the first and third lines of the next, and the last line is often the same as the first.

Two fallback verdicts

When no fixed form matches, the tool falls back to the two broadest descriptions rather than forcing a wrong badge:

• Rhymed Poetry: Not one fixed form: reported when the final syllables of lines rhyme in a repeating pattern but no named fixed form matches.
• Free Verse: Poetry not dictated by an established form or meter; it fits no mold and has no preexistent pattern. Reported when no regular meter dominates and the end words build no rhyme scheme.

The acrostic gets special treatment: Names or words are spelled out through the first letter of each line. The identifier shows that vertical letter column; only you can judge whether it spells something.

The forms it will never claim, and why that is a feature

Many famous forms are defined by subject or process, not structure. An elegy is an elegy because it mourns; an ode because it addresses; an epic because of its scale and story. No measurement of syllables can prove any of that, so this tool lists those forms as out of scope instead of guessing: Epic Poem, Narrative Poems, Elegy, Ode, Lyric Poetry, Epigram, Ekphrastic, Erasure/Blackout Poetry, Echo Verse. The full definitions of all twenty forms live on ourtypes of poems reference.

How the measuring works

Syllable counts come from a pronunciation dictionary of 125,000+ words, the same data behind thesyllable counter. Meter verdicts use the deterministic template matching documented on themeter checker, and the rhyme scheme uses the same phonetic rhyme keys as therhyme scheme analyzer. Words the dictionary does not know are counted heuristically and marked with a ~, and their rhyme letter becomes a ? rather than a guess.