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Weights and Measures Office

Overview

The Weights and Measures Office ensures fair and accurate trade measurements in Singapore. Find out what businesses must comply with and how consumers can protect themselves when buying goods sold by weight.

Last updated 25 May 2026

About the Weights and Measures Office

The Weights and Measures Office (WMO) safeguards the interests of consumers and businesses by ensuring a uniform and accurate system of weights and measures in Singapore.

Under the Weights and Measures Act, weighing and measuring instruments used for trade must be registered in accordance to international standards, verified for accuracy, and affixed with the ACCURACY Label. The WMO ensures that the declared net quantity stated in products or product labels of pre-packaged goods are accurate and conducts market surveillance, inspections and investigations to ensure fair trade measurement practices are upheld.

The WMO is an office overseen by the Competition and Consumer Commission of Singapore (CCS).

What we do?

To ensure a uniform and accurate system of weights and measures in Singapore, we:

  • Designate Authorised Verifiers to perform verification of weighing and measuring instruments

  • Register weighing and measuring instruments suitable for trade use

  • Inspect weighing and measuring instruments used for trade purposes to check for inaccuracies and ensure that they have not been tampered with

  • Inspect goods sold to ensure they meet the weight declared

  • Investigate complaints relating to weights and measures matters from consumers and traders

What must businesses do?

Users, suppliers or importers of weighing and/or measuring instruments, as well as manufacturers and/or packers, importers and/or distributors, and retailers of pre-packaged goods must comply with the Weights and Measures Act to ensure accurate transactions and give consumers peace of mind knowing that they get what they pay for.

Find out more about your role as business.

What can consumers do?

Consumers can play a role to ensure they receive the correct quantity when purchasing goods sold by weight.

Find out about consumer tips for products sold by weight.