Achaupai is aquatrain verse of Indian poetry, especially medievalHindi poetry, that uses ametre of four syllables.

Famous chaupais include those of poet-saintTulsidas (used in his classical textRamcharitamanas and poemHanuman Chalisa) .

Chaupai is identified by a syllable count 16/16, counted with a value of 1 in case of Hrasva (short sounding letter) and 2 in case of Dirgha (long sounding letter).

Some of the famous 40chaupais (known as "chalisa");

• Hanuman Chalisa
• Ganesh Chalisa
• Shiv Chalisa

• Chhand (poetry)
• Chaupai (Sikhism)