Haiku Syllable Counter
Write a haiku and check the classic 5-7-5 syllable pattern instantly. Each of the three lines is counted and compared to its target as you type.
Syllable counts are estimated with a phonetic heuristic and may differ slightly for unusual words.
How it works
A traditional English-language haiku has three lines of 5, 7, and 5 syllables — 17 in total. That structure is more than a counting exercise: the short first line sets a scene, the middle line builds or turns it, and the final line lands the image in five syllables, so getting the count right matters for the rhythm as much as the rule. Each line you write is checked against its target as you type: the counter breaks your haiku into its three lines, counts syllables in each using the same vowel-group heuristic as the main tool, and shows immediately whether a line is under, over, or exactly on target. A checkmark confirms the whole poem matches 5-7-5; otherwise you'll see which line needs adjusting. If a line is running long, look for a shorter synonym for a multi-syllable word — "autumn" (2) versus "fall" (1) is a classic haiku trick. If a line is short, add a concrete sensory detail rather than padding with filler words; haiku favor precise, single-syllable nouns over long descriptive phrases. As with the main counter, unusual or foreign words may be estimated rather than dictionary-exact, so double-check anything that looks off.
Frequently asked questions
- What is the 5-7-5 haiku pattern?
- A traditional English haiku has three lines with 5, 7, and 5 syllables respectively — 17 syllables in total.
- Does a haiku have to be exactly 5-7-5?
- Classic haiku follow 5-7-5, but many modern English haiku are more flexible. This checker targets the traditional pattern as a guide.
- Does punctuation count as a syllable?
- No — punctuation marks, dashes, and line breaks are ignored; only the vowel sounds in actual words are counted. You can punctuate your haiku however you like without it affecting the 5-7-5 count.
- Is Japanese haiku really about syllables?
- Not exactly — traditional Japanese haiku count 'on' (morae), a slightly different unit of sound than the English syllable, and often include a kigo (season word) and a cutting word. English-language haiku adapted the 5-7-5 pattern using syllables instead, which is what this checker measures — a widely used approximation rather than a strict translation of the Japanese form.