Several units of measurement were historically used in Singapore to measure length, mass, and volume. During 1968–1970, the metric system was adopted in Singapore.[1] The metric system is used for most official purposes and only metric measures are permitted for trade.[2] Despite these restrictions, fabric is still commonly sold by the square yard.

System during the later half of the 19th century

Several units were used in Singapore under Straits Settlements.

Length units

Mass units


  1. ^ Cardarelli, F. (2003). Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins. London: Springer. p. 7. ISBN 978-1-4471-1122-1.
  2. ^ "Weights and Measures Act". Singapore Statutes Online.
  3. ^ a b Clarke, F.W. (1891). Weights Measures and Money of All Nations. New York: D. Appleton & Company. p. 50.