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Mechanical Units - Metric & SAE

Here is a collection of some of the most often used mechanical units. Both SI (metric) and SAE (English) units are given.

There are two fundamental types of units: base units and derived units. Base units include meter, foot, kilogram, second, etc. Derived units involve a combination of base units, such as square meter,  kilometer/second, etc.











Name Base Unit Symbol Base Unit Symbol
Length meter m foot ft
Area square meter m2 square foot ft2
Volume cubic meter m3 cubic foot ft3
Mass kilogram kg pound lb
Density kilogram/cubic meter kg/m3 pound/cubic foot lb/ft3
Time second s second s
Speed kilometer/second km/s foot/second ft/s
Force newton N pound-force lbf
Pressure pascal P pound/square foot lb/ft2
Plane Angle radian rad degree °
Solid Angle steradian ster square degree deg2
Momentum kilogram*meter/second r pound*foot/second r
Torque newton/meter t pound-force/foot t
Young's modulus pascal E pascal E
Kinetic energy joule K watt*second K
Potential energy joule U watt*second U

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Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2018
Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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