Metric or metrical may refer to:

Measuring

Metric system The metric system is a system of measurement that standardization, standardizes a set of base units and a nomenclature for describing relatively large and small quantities via decimal-based multiplicative unit prefixes. Though the rules gover ...

, an internationally adopted decimal system of measurement * An adjective indicating relation to

measurement Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events. In other words, measurement is a process of determining how large or small a physical quantity is as compared to ...

in general, or a noun describing a specific type of measurement

Mathematics

In mathematics, metric may refer to one of two related, but distinct concepts: * A function which measures distance between two points in a

metric space In mathematics, a metric space is a Set (mathematics), set together with a notion of ''distance'' between its Element (mathematics), elements, usually called point (geometry), points. The distance is measured by a function (mathematics), functi ...

* A

metric tensor In the mathematical field of differential geometry, a metric tensor (or simply metric) is an additional structure on a manifold (such as a surface) that allows defining distances and angles, just as the inner product on a Euclidean space allows ...

, in differential geometry, which allows defining lengths of curves, angles, and distances in a manifold

Natural sciences

* Metric tensor (general relativity), the fundamental object of study in general relativity, similar to the gravitational field in Newtonian physics * Senses related to measurement: **

, an internationally adopted decimal system of measurement ** Metric units, units related to a metric system **

International System of Units The International System of Units, internationally known by the abbreviation SI (from French ), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official s ...

, or ''Système International'' (SI), the most widely used metric system * METRIC, a model that uses Landsat satellite data to compute and map evapotranspiration (ET) in climatology/meteorology

Engineering and business

The word metric is often used to mean a

descriptive statistic A descriptive statistic (in the count noun sense) is a summary statistic that quantitatively describes or summarizes features from a collection of information, while descriptive statistics (in the mass noun sense) is the process of using and a ...

, indicator, or

figure of merit A figure of merit (FOM) is a performance metric that characterizes the performance of a device, system, or method, relative to its alternatives. Examples *Absolute alcohol content per currency unit in an alcoholic beverage *accurizing, Accuracy o ...

used to describe or measure something quantitatively, including: * Performance indicator, a measure of an organization's activities and performance *

Metrics (networking) Routing metrics are configuration values used by a router to make routing decisions. A ''metric'' is typically one of many fields in a routing table. Router metrics help the router choose the best route among multiple feasible routes to a des ...

, the properties of a communication path used by a router to make routing decisions *

Software metric In software engineering and development, a software metric is a standard of measure of a degree to which a software system or process possesses some property. Even if a metric is not a measurement (metrics are functions, while measurements are t ...

, a measure of some property of a piece of software or its specifications *

Reuse metrics In software engineering, many reuse metrics and models are metrics used to measure code reuse and reusability. A metric is a quantitative indicator of an attribute of a thing. A model specifies relationships among metrics. Reuse models and metri ...

, a quantitative indicator of an attribute for software reuse and reusability * Search engine optimization metrics, indicators of a website's organic search potential

Music

Alex Metric Alex Drury (born 31st December 1981), known professionally as Alex Metric, is a British musician, DJ and producer. At the 61st Annual Grammy Awards, he won a Grammy Award for Best Dance Recording for producing the Silk City and Dua Lipa son ...

(born 1984), British musician, DJ and producer *

Metric (band) Metric are a Canadian indie rock band founded in 1998 in Toronto, Ontario. The band consists of Emily Haines (lead vocals, synthesizers, guitar, tambourine, harmonica, piano), James Shaw (guitar, synthesizers, theremin, backing vocals), Josh ...

, a Canadian rock band founded in Toronto, Ontario

Other uses

Metre (poetry) In poetry, metre ( Commonwealth spelling) or meter ( American spelling; see spelling differences) is the basic rhythmic structure of a verse or lines in verse. Many traditional verse forms prescribe a specific verse metre, or a certain set o ...