Related Resources: Engineering Conversions Equivalent

### Mechanical Engineering Units and Quantities

Engineering Conversions and Equivalents

Mechanical Engineering Units and Quantities

Where:

Length = L
Mass = M
Time = T
Current = Q/T
Charge = Q

 Description Dimensions Derived Units Acceleration LT-2 meter/sec2 Angle 0 radian Angular Accleration T-2 radian/sec2 Angular Momentum ML-2 T-1 kgm-meter2/sec Angular Velocity T-1 radian/sec Area L2 meter2 Energy ML2T-2 joule Force MLT-2 newton Frequency T -1 cycle/sec Gravitational Field Strength LT-2 newton/kgm Length L meter Mass M kilogram Mass Density ML-3 kgm/meter2 Momentum MLT-1 kgm-meter/sec Power ML2T-3 watt Pressure ML-1T-2 newton/meter2 Time T second Torque ML2T-2 newton/meter Velocity LT -1 meter/sec Viscosity (Dynamic) ML-1T-1 kgm/meter-sec Viscosity (Kinematic) L2T-1 meter2/sec Volume L3 meter3 Wave Length L meter Work ML2T-2 joule

From these basic units useful derived units  have been defined.

 Unit SI name SI symbol Relationship SI basic units frequency hertz Hz - s-1 speed, velocity - - - m / s plane angle radian rad - m x m-1 = 1 angular velocity - - rad / s s-1 acceleration - - - m / s2 angular acceleration - - rad / s2 s-2 area - - - m2 volume - - - m3 mass density - - - kg / m3 specific volume - - - m3 / kg force newton N - kg x m x s-2 work, energy, heat joule J N x m m2 x kg x s-2 pressure, stress pascal Pa N / m2 m-1 x kg x s-2 power watt W J / s m2 x kg x s-3 electric potential difference, EMF volt V W / A m2 x kg x s-3 x A-1 electric resistance ohm Ω V / A m2 x kg x s-3 x A-2 electric conductance siemens S A / V m-2 x kg-1 x s3 x A2 current density - - - A / m2 electric charge coulomb C s x A capacitance farad F C / V m-2 x kg-1 x s4 x A2 magnetic flux weber Wb V x s m2 x kg x s-2 x A-1 magnetic flux density tesla T Wb / m2 kg x s-2 x A-1 magnetic field strength - - - A / m inductance henry H Wb/ A m2 x kg x s-2 x A-2 Celsius temperature degree Celsius °C - K

Prefixes can be added to indicate multiples of the basic SI unit.