The institution responsible for national and other measurement standards and scientific metrology in Slovakia is the Slovak Institute of Metrology (SMU), which in accordance with the Law on Metrology is a  contributory institution, responsible for the mentioned areas.

The institutions responsible for legal metrology are:

• Slovak Office of Standards, Metrology and Testing (UNMS),
• Slovak Legal Metrology (SLM),
• Slovak Metrology Inspectorate (SMI).

Calibration of operating instruments is mainly carried out by individual calibration laboratories, located at factories and other organizations. Some of these laboratories are accredited by the Slovak National Accreditation Service (SNAS) in accordance with ISO/IEC 17025. SMU and SLM also provide services on calibration of measuring instruments.