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Frequency Wavelength Units Conversion
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency. In SI units, the unit of frequency is hertz (Hz), named after the German physicist Heinrich Hertz. For example, 1 Hz means that an event repeats once per second, 2 Hz is twice per second, and so on. This unit was originally called a cycle per second (cps), which is still sometimes used. Heart rate and musical tempo are measured in beats per minute (BPM). Frequency of rotation is often expressed as a number of revolutions per minute (rpm). BPM and rpm values must be divided by 60 to obtain the corresponding value in Hz: thus, 60 BPM translates into 1 Hz.
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The cycle per second was a once-common unit of frequency. With the organisation of the International System of Units (abbreviated SI from the French) in 1960, the cycle per second was officially replaced by the hertz, or reciprocal second—i.e. the cycle in cycle per second was dropped. Perhaps because of the convenient brevity it brings to both speech and writing, this particular mandate has been so widely adopted as to render the old cycle per second all but extinct.
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Convert from Rotational speed cycle per second
hertz (Hz)
exahertz (EHz)
petahertz (PHz)
terahertz (THz)
gigahertz (GHz)
megahertz (MHz)
kilohertz (kHz)
hectohertz (hHz)
dekahertz (daHz)
decihertz (dHz)
centihertz (cHz)
millihertz (mHz)
microhertz (µHz)
nanohertz (nHz)
picohertz (pHz)
femtohertz (fHz)
attohertz (aHz)
cycle per second (cps)
Revolutions per minute (rpm)
Beats per minute (bpm)
Radian per second (rad/s)
Radian per minute
Radian per hour
Radian per day
Degrees per second
Degrees per minute
Degrees per hour
Degrees per day
Value
...calculating...
Format result
0 decimals
1 decimals
2 decimals
3 decimals
4 decimals
5 decimals
6 decimals
7 decimals
1 cycle per second is equal to:
Common
hertz
1
exahertz
1 x 10
-18
petahertz
1 x 10
-15
terahertz
1 x 10
-12
gigahertz
1 x 10
-09
megahertz
1 x 10
-06
kilohertz
0.001
hectohertz
0.01
dekahertz
0.1
decihertz
10
centihertz
100
millihertz
1000
microhertz
1000000
nanohertz
1000000000
picohertz
1000000000000
femtohertz
1 x 10
15
attohertz
1 x 10
18
Rotational speed
cycle per second
1
Revolutions per minute
60
Beats per minute
60
Angular velocity
Radian per second
6.2832
Radian per minute
376.9911
Radian per hour
22619.4673
Radian per day
542867.2107
Degrees per second
360
Degrees per minute
21600.0001
Degrees per hour
1295999.9971
Degrees per day
31103999.7691
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