The tola formed the base for units of mass under the British Indian system, and was also the standard measure of gold and silver bullion.

For the larger weights used in commerce (in the Bengal Presidency), the variation in the pre-1833 standards was found to be greater than the adjustment. The British tola of 180 troy grains (from 1833) can be seen as more of a standardisation than a redefinition: the previous standard in the Bengal Presidency, the system of 'sicca weights', was the mass of one Murshidabad rupee, 179.666 troy grains. The British East India Company issued a silver rupee coin of 180 troy grains, and this became the practical standard mass for the tola well into the 20th century. The very first rupee ( Urdu: رپيا rupayā), minted by Sher Shah Suri (1540–45), had a mass of 178 troy grains, or about 1% less than the British tola. However, it is also a convenient mass for a coin: several pre-colonial coins, including the currency of Akbar the Great (1556–1605), had a mass of 'one tola' within slight variation. One tola was traditionally the weight of 100 ratti (ruttee) seeds, and its exact weight varied according to locality.

The tola is a Vedic measure, with the name derived from the Sanskrit tol (तोलः root तुल्) meaning 'weighing' or 'weight'. It was also used in Aden and Zanzibar: in the latter, one tola was equivalent to 175.90 troy grains (0.97722222 British tolas, or 11.33980925 grams).

It was the base unit of mass in the British Indian system of weights and measures introduced in 1833, although it had been in use for much longer. The tola ( Hindi: तोला Urdu: تولا tolā) also transliterated as tolah or tole, is a traditional Ancient Indian and South Asian unit of mass, now standardised as 180 grains ( 11.6638038 grams) or exactly ⅜ troy ounce.

Weight converter tola to gram