The following list illustrates various frequencies, measured in hertz, according to decade in the order of their magnitudes, with the negative decades illustrated by events and positive decades by acoustic or electromagnetic uses.

Factor(Hz) Multiple Value Item 10−18 1 attohertz (aHz) ~2.2978 aHz The Hubble constant (once in 13.8 billion years) 10−17 10 aHz ~79 aHz Supercontinent cycle (about every 400 million years) 10−16 100 aHz ~137.8 aHz Once per galactic year (about every 230 million years) 10−15 1 femtohertz (fHz) ~3 fHz Sound waves created by a supermassive black hole in the Perseus Cluster 10−14 10 fHz ~31.71 fHz Once every one million years 10−12 1 picohertz (pHz) 1.23 pHzPrecession of the Earth's axis (about every 25,700 years) 10−11 10 pHz ~31.71 pHz Once per millennium 10−10 100 pHz ~317.1 pHz Once per century 10−9 1 nanohertz (nHz) ~1 nHz Once per generation (about every 30 years) ~2.9 nHz Average solar cycle (about every 11 years) ~3.171 nHz Once per decade 10−8 10 nHz 11.6699016 nHz Once in a blue moonGoogle Calculator result for "once in a blue moon" ~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 10−2 1 centihertz (cHz) ~16.667 mHz One rpm 10−1 1 decihertz (dHz) 189 mHz Acoustic frequency of G−7, the lowest note sung 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 (Hz) 1 to 1.66 Hz Approximate frequency of an adult human's resting heart beat 1 Hz 60 bpm, common tempo in music 2 Hz 120 bpm, common tempo in music ~7.83 Hz Fundamental frequency of the Schumann resonances 101 10 hertz 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 hear20 Hz is considered the normal low frequency limit of human hearing. When pure sine waves are reproduced under ideal conditions and at very high volume, a human listener will be able to identify tones as low as 12 Hz. 18 Hz Average house cat's purr 24 Hz Common frame rate of movies 27.5 Hz Acoustic the lowest musical note (A0) 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 Hz 100 Hz Cyclic rate of a typical automobile engine at redline (equivalent to 6000 rpm) 261.626 Hz Acoustic the musical note middle C (C4) 440 Hz Acoustic concert pitch (A above middle C; A4), used for tuning musical instruments 716 Hz Rotational period of one of the fastest known millisecond pulsars, PSR J1748−2446ad 103 1 kilohertz (kHz) 1 kHz Usual frequency of a bleep censor 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 sung by Georgia Brown, who has a vocal range of 8 octaves. 44.1 kHz Common audio sampling frequency 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 Electromagnetic microwave ovens, wireless LANs and cordless phones (starting in 1998) 2.6–3.8 GHz A common desktop CPU speed as of 2014 5.8 GHz Electromagnetic cordless telephone frequency introduced in 2003 1010 10 GHz 3 GHz to 30 GHz Electromagnetic super 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 (December 2006). 1012 1 terahertz (THz) The terahertz gap 1013 10 THz 21 THz to 33 THz Electromagnetic infrared 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 400 THz to 790 THz Electromagnetic visible light, from red to violet 1015 1 petahertz (PHz) 2.47 PHz Electromagnetic Lyman-alpha line 1016 10 PHz 30 PHz Electromagnetic X-rays 1017 100 PHz 1018 1 exahertz (EHz) 1019 10 EHz 1020 100 EHz 300 EHz + Electromagnetic gamma rays 1021 1 zettahertz (ZHz) 36 ZHz Resonance width of the rho meson 1024 1 yottahertz (YHz) 1027 1 ronnahertz (RHz) 3.9 RHz Highest energy (16 TeV) gamma ray detected, from Markarian 501

See also Orders of magnitude (rotational speed)

References