Orders of magnitude (frequency)

To help compare different orders of magnitude, the following list describes various frequencies, which is measured in hertz.

Factor
(Hz)
Multiple Value Item
10−18 1 attohertz (aHz) ~2.29 aHz The Hubble Constant (once in 13.8 billion years)
10−17 10 aHz ~79 aHz Supercontinent cycle
10−15 1 femtohertz (fHz) ~3 fHz Sound waves created by a supermassive black hole in the Perseus cluster[1]
10−12 1 picohertz (pHz)
10−11 10 pHz ~31.71 pHz Thrice per millennium
10−10 100 pHz ~317.1 pHz Once per century
10−9 1 nanohertz (nHz) ~1 nHz Once per generation
10−8 10nHz 11.6699016 nHz Once in a blue moon[2]
~31.71 nHz Yearly (or Earth's orbital frequency)
10−7 100 nHz ~380.5 nHz Monthly (or the Moon's orbital frequency)
~413 nHz Average menstrual cycle (28 days)
10−6 1 microhertz (µHz) ~1.653 µHz Weekly
10−5 10 µHz ~11.57 µHz Daily (or Earth's rotation frequency)
10−4 100 µHz ~277.8 µHz Hourly
10−3 1 millihertz (mHz)
10−2 1 centihertz (cHz) ~16.667 mHz One rpm
10−1 1 decihertz (dHz) 189 mHZ Acoustic —frequency of G−7, the lowest note sang by the singer with the deepest voice in the world, Tim Storms. His vocal cords vibrate 1 time every 5.29 seconds.
100 1 hertz 1 to 1.66 Hz Approximate frequency of an adult human's resting heart beat
1 Hz 60 bpm, common tempos in music.
2 Hz 120 bpm, common tempos in music.
101 10 hertz (daHz) 10 Hz Cyclic rate of a typical automobile engine at idle (equivalent to 600 rpm)
12 Hz Acoustic — the lowest possible frequency that a human can hear[3]
27.5 Hz Acoustic — the lowest musical note (A) playable on a normally-tuned standard piano
50 Hz Electromagnetic — standard AC mains power (European AC, Tokyo AC)
Refresh Rate of PAL and SECAM CRT Televisions
60 Hz Electromagnetic — standard AC mains power (American AC, Osaka AC)
Refresh Rate of NTSC CRT Televisions and Standard Refresh Rate of Computer Monitors
102 100 hertz (hHz) 100 Hz Cyclic rate of a typical automobile engine at redline (equivalent to 6000 rpm)
261.626 Hz Acoustic — the musical note middle C
440 Hz Acoustic — concert pitch (A above middle C), used for tuning musical instruments
103 1 kilohertz (kHz) 4.186 kHz Acoustic — the highest musical note (C8) playable on a normally-tuned standard piano
8 kHz ISDN sampling rate
104 10 kHz 14 kHz Acoustic — the typical upper limit of adult human hearing
17.4 kHz Acoustic — a frequency known as The Mosquito, which is generally only audible to those under the age of 24.
25.1 kHz Acoustic — G10, The highest pitch sang by Georgia Brown (Brazilian singer), who has a vocal range of 8 octaves.
105 100 kHz 740 kHz The clock speed of the world's first commercial microprocessor, the Intel 4004 (1971)
106 1 megahertz (MHz) 530 kHz to 1.710 MHz Electromagnetic — AM radio broadcasts
1 MHz to 8 MHz Clock speeds of early home/personal computers (mid-1970s to mid-1980s)
107 10 MHz 13.56 MHz Electromagnetic — Near field communication
108 100 MHz 88 MHz to 108 MHz Electromagnetic — FM radio broadcasts
902 to 928 MHz Electromagnetic — common cordless telephone frequency in the US
109 1 gigahertz (GHz) 1.42 GHz Electromagnetic — the hyperfine transition of hydrogen, also known as the hydrogen line or 21 cm line
2.4 GHz Electromagneticmicrowave ovens, Wireless LANs and cordless phones (starting in 1998).
2.6-3.8 GHz A common desktop processor speed as of 2014
4.7 GHz AMD FX-9790 clock speed, fastest commercial processor as of 2013
5.8 GHz Electromagnetic — cordless phone frequency introduced in 2003
8.8 GHz Highest ever CPU frequency after overclocking, set on an AMD FX-8350 on 19 November 2012[4]
1010 10 GHz 3 GHz to 30 GHz Electromagneticsuper high frequency
60 GHz Electromagnetic — 60 GHz Wi-Fi (WiGig) introduced in 2010
1011 100 GHz 160.2 GHz Electromagnetic — peak of cosmic microwave background radiation
845 GHz Fastest transistor (Dec. 2006).[5][6]
1012 1 terahertz THz The Terahertz gap
1013 10 THz 21 THz to 33 THz Electromagneticinfrared light used in thermal imaging, for example for night vision
31.5 THz Electromagnetic — peak of Black-body radiation emitted by human body
1014 100 THz 428 THz to 750 THz Electromagnetic — visible light, from red to violet
1015 1 petahertz PHz 2.47 PHz ElectromagneticLyman-alpha line
1016 10 PHz 30 PHz ElectromagneticX-rays
1017 100 PHz
1018 1 exahertz EHz
1019 10 EHz
1020 100 EHz 300 EHz + ElectromagneticGamma rays
1021 1 zettahertz ZHz
1024 1 yottahertz YHz
1027 1000 yottahertz YHz 3.9×1027 Hz Highest energy (16 TeV) gamma ray detected, from Markarian 501.[7]
10 quintillion Yottahertz (YHZ) 10 quintillion YHz 1.85×1043 Hz Planck frequency, the inverse of the Planck time