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Ratti seeds, used for measuring weights in India.
Gandharan "bent-bar" silver coins with Satamana weight.

A ratti (Sanskrit: raktika) is a traditional Indian unit of measurement for mass. Based on the nominal weight of a ratti seed, it measured approximately 1.8 or 1.75 grains.[1][2] It has now been standardized as 0.1215 gram.[citation needed]

  • 1 tola = 12 masha or 11.664 gram
  • 1 tank = 4 mashas or 3.888 gram
  • 1 masha = 8 ratti or 0.972 gram
  • 1 Ratti (sunari) goldsmith = 121.5 mg
  • 1 Pakki Ratti (for astrological gemstones ) = 1.5 x Sunari Ratti = 1.5 x 121.5 mg = 182.25 mg = 0.91 Carat

A Satamana (Śatamāna, literally "hundred measures") was interpreted as hundred rattis, and used as a standard weight of silver coins of ancient India between 600–200 BCE.[3] Being the same weight as a Babylonian shekel it was actively minted in Gandhara in the northwest Indian subcontinent for trade with West Asia.

See alsoEdit



  • Cunningham, Alexander (1891), Coins of Ancient India: From the Earliest Times Down to the Seventh Century A. D., London: B. Quaritch
  • Mukherjee, B. N. (2012), "Money and Social Changes in India (up to c. AD 1200)", in Saiyid Zaheer Husain Jafri (ed.), Recording the Progress of Indian History: Symposia Papers of the Indian History Congress, 1992-2010, Primus Books, pp. 411–, ISBN 978-93-80607-28-3