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Spanish Syllable Counter

Count syllables in Spanish words with diphthong, hiatus, and stress analysis. Built on Spanish syllabification rules.

Spanish syllabification rules

Spanish syllables are organized around vowel nuclei. Each syllable contains exactly one vowel sound, which can be either a single vowel, a diphthong (two vowels pronounced together), or a triphthong (three vowels pronounced together). The five vowels in Spanish split into two groups: strong vowels a, e, o and weak vowels i, u.

When a strong vowel meets a weak vowel, they form a diphthong and stay in the same syllable: cau-sa, vie-ne, cuo-ta. When two strong vowels meet, they form a hiatus and split into separate syllables: te-a-tro, po-e-ta. A written accent on a weak vowel breaks the diphthong and forces a hiatus: pa-ís, dí-a, baúl.

Stress in Spanish follows three rules. Words ending in a vowel, n, or s are stressed on the second-to-last syllable (palabras llanas/graves). Words ending in any other consonant are stressed on the last syllable (agudas). A written accent overrides these defaults and marks the stressed syllable explicitly, including esdrújulas (third-to-last) and sobresdrújulas (fourth-to-last).

Frequently Asked Questions

Is the Spanish syllable counter free?
Yes, completely free with no signup required.
Is my text private?
Yes — all syllable counting happens in your browser. We never send your text to a server.
How does Spanish syllabification work?
Spanish syllables are built around vowel nuclei. Strong vowels (a, e, o) form their own syllable, while weak vowels (i, u) combine with adjacent strong vowels to form diphthongs (1 syllable). Two strong vowels together form a hiatus (2 syllables). An accent on a weak vowel breaks the diphthong into a hiatus.
Why are my results 'estimated' instead of from a dictionary?
For non-English languages, we use phonological heuristics. They're typically 85-90% accurate.
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