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Acceleration (m/s2)
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Electric Current (A)
Electric Resistance (Ω)
Energy (J)
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Frequency (Hz)
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Quantity (i)

The SI unit of frequency is the hertz (abbreviated Hz), named after the German physicist Heinrich Hertz. A previous name for this unit was cycles per second (cps). The SI unit for period is the second. A traditional unit of measure used with rotating mechanical devices is revolutions per minute, abbreviated r/min or rpm. 60 rpm equals one hertz.

- 1 Per Second (1/s) ⇛
- Attohertz (aHz) ⇛
- Centihertz (cHz) ⇛
- Cycle Per Second (cps) ⇛
- Decahertz (daHz) ⇛
- Decihertz (dHz) ⇛
- Degree Per Day (°/day) ⇛
- Degree Per Hour (°/hr) ⇛
- Degree Per Minute (°/min) ⇛
- Degree Per Second (°/sec) ⇛
- Exahertz (EHz) ⇛
- Femtohertz (fHz) ⇛
- Frames Per Second (FPS) ⇛
- Fresnels (fresnel) ⇛
- Gigahertz (GHz) ⇛
- Hectohertz (hHz) ⇛
- Hertz (Hz) ⇛
- Kilohertz (kHz) ⇛
- Megahertz (MHz) ⇛
- Microhertz (μHz) ⇛
- Millihertz (mHz) ⇛
- Nanohertz (nHz) ⇛
- Petahertz (PHz) ⇛
- Picohertz (pHz) ⇛
- Radian Per Day (rad/d) ⇛
- Radian Per Hour (rad/h) ⇛
- Radian Per Minute (rad/min) ⇛
- Radian Per Second (rad/s) ⇛
- Revolutions Per Day (rpd) ⇛
- Revolutions Per Hour (rph) ⇛
- Revolutions Per Minute (rpm) ⇛
- Revolutions Per Second (rps) ⇛
- Terahertz (THz) ⇛
- Yoctohertz (yHz) ⇛
- Yottahertz (YHz) ⇛
- Zeptohertz (zHz) ⇛
- Zettahertz (ZHz) ⇛

- Nanohertz -> Yoctohertz
- Yoctohertz -> Nanohertz
- Zettahertz -> Petahertz
- Petahertz -> Zettahertz
- Yottahertz -> Radian Per Day
- Radian Per Day -> Yottahertz
- Terahertz -> Megahertz
- Megahertz -> Terahertz
- Revolutions Per Minute -> Gigahertz
- Gigahertz -> Revolutions Per Minute
- Cycle Per Second -> Frames Per Second
- Frames Per Second -> Cycle Per Second
- Hectohertz -> Decahertz
- Decahertz -> Hectohertz
- Millihertz -> Revolutions Per Hour
- Revolutions Per Hour -> Millihertz
- Picohertz -> Radian Per Minute
- Radian Per Minute -> Picohertz
- Exahertz -> Degree Per Hour
- Degree Per Hour -> Exahertz