The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement.

Układ SI, właściwie Międzynarodowy Układ Jednostek Miar (fr. Système international d’unités, SI) – znormalizowany układ jednostek miar zatwierdzony w 1960 (później modyfikowany) przez Generalną Konferencję Miar na XI Generalnej Konferencji Miar. Jest stworzony w oparciu o metryczny system miar.

Counterclockwise from top: second (time), metre (length), ampere (electric current), kelvin (temperature), candela (luminous intensity), mole (amount of substance) and kilogram (mass). The International System of Units is the standard modern form of the metric system.

The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived.

Units of the SI. The SI is composed of 7 base units of measure, which are used to derive an additional 22 units with special names. Base Units. Base units are the foundational units that are used to define other units in the SI. Refer to the table …

The SI system (International System of Units) is the modern metric system of measurement and the dominant system of international commerce and trade. SI units are gradually replacing Imperial and USCS units. The SI is maintained by the International Bureau of Weights and Measures (BIPM, for Bureau International des Poids et Mesures) in Paris.

Na tej stronie znajdziecie Państwo tablicę oficjalnych przedrostków układu SI (franc. Système International d'Unités )zatwierdzonych przez BIPM. Zapraszamy też do korzystania z naszych konwerterów jednostek.

Układ SI definiuje siedem jednostek miary jako podstawowy zbiór z których tworzone są jednostki pochodne. Te podstawowe jednostki i ich fizyczna wielkość to [1]: metr – długość; kilogram – masa (uwaga: nie gram) sekunda – czas; amper – prąd elektryczny; kelwin – temperatura; kandela – światłość; mol – liczność materii.

Within the framework of the Metre Convention, an international system of units (SI) was defined, which is comprised of seven basic units (metre, kilogram, second, ampere, kelvin, mole and candela).

The International System of Units, or SI (from its French name, “Système international d'unités”), is a system of measurement units, based on the International System of Quantities (ISQ), defined in the ISO and IEC 80000 series of standards