More than 25 frequency units. Common SI units such as hertz (Hz), kilohertz (kHz), gigahertz (GHz), but also some less known like radians per seconds, RPM (rotatinions per minute) or degrees per hours.

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Symbolic algebra

ⓘ Hint: This calculator supports symbolic math. You can enter numbers, but also symbols like a, b, pi or even whole math expressions such as (a+b)/2. If you still don't sure how to make your life easier using symbolic algebra check out our another page: Symbolic calculations

Inputs data - value and unit, which we're going to convert#

Value
Unit
Decimals

$1$ (hertz) is equal to:#

SI system#

Unit	Symbol	Symbol (plain text)	Value as symbolic	Value as numeric	Notes	Unit conversion formula
terahertz	Show source $THz$	THz	Show source $\text{...}$	-	Derived frequency unit in SI system. One terahertz is equal to one trillion of hertz: $1 THz = 1000\ 000\ 000\ 000 Hz = 10^{12} Hz$	Show source $...$
gigahertz	Show source $GHz$	GHz	Show source $\text{...}$	-	Derived frequency unit in SI system. One gigahertz is equal to one billion of hertz: $1 GHz = 1000\ 000\ 000 Hz = 10^{9} Hz$	Show source $...$
megahertz	Show source $MHz$	MHz	Show source $\text{...}$	-	Derived frequency unit in SI system. One megahertz is equal to one million of hertz: $1 MHz = 1000\ 000 Hz = 10^{6} Hz$	Show source $...$
kilohertz	Show source $kHz$	kHz	Show source $\text{...}$	-	Derived frequency unit in SI system. One kilohertz is equal to one thousand of hertz: $1 kHz = 1000 Hz = 10^{3} Hz$	Show source $...$
hertz	Show source $Hz$	Hz	Show source $\text{...}$	-	Basic frequency unit in SI system. One hertz is equal to one event per second: $1Hz = \frac{1}{s}$	Show source $...$
milihertz	Show source $mHz$	mHz	Show source $\text{...}$	-	Derived frequency unit in SI system. One milihertz is equal to one thousandth of hertz: $1 mHz = 0.001 Hz = 10^{-3} Hz$	Show source $...$
microhertz	Show source $\mu Hz$	µHz	Show source $\text{...}$	-	Derived frequency unit in SI system. One microhertz is equal to one millionth of hertz: $1 \mu Hz = 0.000001 Hz = 10^{-6} Hz$	Show source $...$
nanohertz	Show source $nHz$	nHz	Show source $\text{...}$	-	Derived frequency unit in SI system. One nanohertz is equal to one one billionth of hertz: $1 nHz = 0.000000001 Hz = 10^{-9} Hz$	Show source $...$

Other#

Unit	Symbol	Symbol (plain text)	Value as symbolic	Value as numeric	Notes	Unit conversion formula
1 per second	Show source $\frac{1}{s}$	1/s	Show source $\text{...}$	-	One event per second. Equivalent to one hertz. $\dfrac{1}{s} = 1 Hz$	Show source $...$
cycle per second	Show source $\frac{cycle}{s}$	cycle/s	Show source $\text{...}$	-	One cycle per second. Equivalent to one hertz. $\dfrac{\text{1 cycle}}{s} = 1 Hz$	Show source $...$
degree per hour	Show source $\frac{^{\circ}}{h}$	degree/h	Show source $\text{...}$	-	One degree per hour. Unit of rotational speed equal to 1/360 rotate per hour (because the whole rotate is 360 degrees). $\dfrac{1 / 360}{3600s} = \dfrac{1}{1296000} Hz$	Show source $...$
degree per minute	Show source $\frac{^{\circ}}{min.}$	degree/min.	Show source $\text{...}$	-	One degree per minute. Unit of rotational speed equal to 1/360 rotate per minute (because the whole rotate is 360 degrees). $\dfrac{1 / 360}{60s} = \dfrac{1}{21600} Hz$	Show source $...$
degree per second	Show source $\frac{^{\circ}}{s}$	degree/s	Show source $\text{...}$	-	One degree per second. Unit of rotational speed equal to 1/360 rotate per second (because the whole rotate is 360 degrees). $\dfrac{1 / 360}{s} = \dfrac{1}{360} Hz$	Show source $...$
degree per hour	Show source $\frac{rad}{h}$	rad/h	Show source $\text{...}$	-	One radian per hour. Unit of rotational speed equal to $1 / 2\pi$ rotate per hour (because the whole rotate is $2 \pi$ radians). $\dfrac{1 / 2\pi}{3600s} = \dfrac{1}{7200\pi} Hz$	Show source $...$
degree per minute	Show source $\frac{rad}{min.}$	rad/min.	Show source $\text{...}$	-	One radian per minute. Unit of rotational speed equal to $1 / 2\pi$ rotate per minute (because the whole rotate is $2 \pi$ radians). $\dfrac{1 / 2\pi}{60s} = \dfrac{1}{120\pi} Hz$	Show source $...$
degree per second	Show source $\frac{rad}{s}$	rad/s	Show source $\text{...}$	-	One radian per second. Unit of rotational speed equal to $1 / 2\pi$ rotate per second (because the whole rotate is $2 \pi$ radians). $\dfrac{1 / 2\pi}{s} = \dfrac{1}{2\pi} Hz$	Show source $...$
revolution per hour	Show source $\frac{revolution}{h}$	revolution/h	Show source $\text{...}$	-	Revolutions per hour. See RPM unit for more. $\dfrac{\text{1 rotate}}{3600s} = \dfrac{1}{3600} Hz$	Show source $...$
revolution per minute	Show source $\frac{revolution}{min.}$	revolution/min.	Show source $\text{...}$	-	Revolutions per minute. See RPM unit for more. $\dfrac{\text{1 rotate}}{60s} = \dfrac{1}{60} Hz$	Show source $...$
revolution per second	Show source $\frac{revolution}{s}$	revolution/s	Show source $\text{...}$	-	Revolutions per second. See RPM unit for more. $\dfrac{\text{1 rotate}}{s} = 1 Hz$	Show source $...$
revolution per minute	Show source $RPM$	RPM	Show source $\text{...}$	-	Revolutions per minute. The unit determines the number of turns (i.e. by 360 degrees) performed during one minute. It's a unit of rotational speed or the frequency of rotation around a selected axis. Used for example to measure speed of media under the read head e.g. gramophone disks rotates at speed 16 2⁄3, 33 1⁄3, 45 or 78 RPM. $1 RPM = \dfrac{1}{60s} = \dfrac{1}{60} Hz$	Show source $...$

Some facts#

Frequency is physical quantity defining number of cycles (events occurring periodically) per time unit.
The basic frequency unit in SI system is one Hz (hertz). One hertz corresponds to the frequency of one cycle per second:

$1 Hz = \dfrac{1}{s}$
Frequency is usually indicated by a lower case letter f or greek letter $\nu$ (nu).
To calculate the frequency of an event directly from the definition, use the following formula:

$f = \dfrac{n}{t}$
where:
- f - frequency,
- n - number of recorded events (cycles),
- t - measurement time.
We can find frequency in many everyday areas of life, e.g.
- The musical note of "A" is used as a standard for tuning musical instrument. It's frequency is 440 Hz. In terms of music, the lower frequency means "lower pitch".
- The processor i5 2450M is available in versions clocked with frequencies from 2.5 to 3,1 GHz,
- the plates in most contemporary hard drives make 5400 revolutions per minute (5400 RPM),
- long play vinyl record (LP) should be played at 33 1/2 revolutions per minut (RPM),
- program 1 of Polish Radio can be listened in Poland and in neighboring countries on longwave (LW) at frequency 225 kHz,
- wifi networks use electromagnetic waves with 2,4 GHz or 5 GHz frequency,
- CD-AUDIO format uses sample rating of 44,1 kHz,
- the frequency of alternating current (AC) is 50 or 60 Hz depending on the region,
- etc.

How to convert#

Enter the number to field "value" - enter the NUMBER only, no other words, symbols or unit names. You can use dot (.) or comma (,) to enter fractions.
Examples:
- 1000000
- 123,23
- 999.99999
Find and select your starting unit in field "unit". Some unit calculators have huge number of different units to select from - it's just how complicated our world is...
And... you got the result in the table below. You'll find several results for many different units - we show you all results we know at once. Just find the one you're looking for.