National Measurement Institute

We are the national authority on measurement. We develop and maintain Australia’s measurement system. We deliver measurement policy, science and regulation for a fair, safe, healthy and competitive Australia.

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Trade measurement

Weights and measures in trade

Trade measurement laws apply to all retail and wholesale transactions where measurement determines price. Find information about selling specific goods.

Nominate an inspiring individual or team

These awards highlight outstanding achievement in measurement science at all career levels and sectors, celebrating Australian research and innovation.

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Latest news and case studies

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Jun 2026 National Measurement Institute

Interim fuel audit results released from national fuel checks

Our interim fuel audit results show most retailers are doing the right thing, and that we take action to make sure drivers get the fuel they pay for.
Jun 2026 National Measurement Institute

Supporting fair measurement in online marketplaces

The National Measurement Institute (NMI) helps online retailers make sure measuring tools sold online are accurate and fair.
May 2026 National Measurement Institute

From data to decisions: why measurement matters

The National Measurement Institute (NMI) is celebrating 2026 World Metrology Day.