# U.S. customary units/Related Articles

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## Parent topics

- Physics [r]: The study of forces and energies in space and time.
^{[e]} - Engineering [r]: The profession in which a knowledge of the mathematical and natural sciences gained by study, experience and practice is applied with judgment to develop ways to economically use the materials and forces of nature for the benefit of mankind.
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## Subtopics

- Chemical engineering [r]: The field of engineering that deals with industrial and natural processes involving the chemical, physical or biological transformation of matter or energy into forms useful for mankind, economically and safely without compromising the environment
^{[e]} - Chemistry [r]: The science of matter, or of the electrical or electrostatical interactions of matter.
^{[e]} - Systems of measurement [r]: A set of units which can be used to specify anything which can be measured and were historically important, regulated and defined because of trade and internal commerce.
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- Atmosphere (unit) [r]: A unit of pressure measurement (symbol: atm) defined as 101,325 pascal.
^{[e]} - Bar (unit) [r]: A unit of pressure measurement (symbol: bar) defined as 100,000 Pascals.
^{[e]} - Factor-label conversion of units [r]: A widely used method for converting one set of dimensional units to another set of equivalent units.
^{[e]} - Fahrenheit [r]: A unit of temperature, defined by the melting point of water being at 32 degrees (°F), and the temperature difference between the melting and the boiling points to 180.
^{[e]} - Foot (unit) [r]: A non-SI unit of length, equal to 0.3048 metre, and equivalent to 12 inches.
^{[e]} - Inch [r]: A non-SI unit of length, equal to 2.54 centimeters, and equivalent to 1/12th of a foot.
^{[e]} - International System of Units [r]: Metric unit system based on the metre, kilogram, second, ampere, kelvin, mole and candela.
^{[e]} - Measurement [r]: The act of quantifying a property of an object or relation; the output of the instrument or procedure that does the quantification
^{[e]} - Mile [r]: A non-SI unit of length, equal to 1.609 kilometres, and equivalent to 5,280 feet.
^{[e]} - Pressure [r]: A ratio equal to the force applied perpendicular to the surface of the area divided by that area (force/area).
^{[e]} - Rankine [r]: A unit of temperature, defined by absolute zero being at 0 degrees (°R), with 1°R being equal to 1°F (Fahrenheit), i.e. the temperature difference between the melting and the boiling points of water is set to 180.
^{[e]} - Standard Cubic Feet Per Minute [r]: An acronym for "Standard cubic feet per minute" which is used to denote the volumetric flow rate of a gas (in the United States customary units) corrected to "standardized" conditions of temperature, pressure and relative humidity, thus representing a precise mass flow rate.
^{[e]} - Temperature [r]: A fundamental quantity in physics - describes how warm or cold a system is.
^{[e]} - Temperature conversion [r]: The process of transforming values of temperature measured in one unit to values in another unit.
^{[e]} - Yard [r]: A non-SI unit of length, equal to 0.9144 metre, and equivalent to 3 feet.
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