Frequency Converter
Conversion table
1 Hertz equals:
About Frequency Converter
Hertz means "per second". The most useful conversion here is rpm to Hz: 1 rpm = 1/60 Hz, so 3000 rpm is 50 Hz. That is no coincidence — an induction motor's speed follows the mains frequency, and a 2-pole motor at 50 Hz has a synchronous speed of exactly 3000 rpm (about 2900 in practice due to slip), while 4-pole is 1500 rpm. A variable-frequency drive is literally changing that frequency.
Frequency spans an enormous range: mains 50/60 Hz, audio 20 Hz–20 kHz, switching supplies from tens of kHz to a few MHz, Wi-Fi at 2.4 and 5 GHz, CPUs in the GHz. That is nine orders of magnitude under one unit.
2.4 GHz versus 5 GHz is not a "newer is faster" story: higher frequency means shorter wavelength — worse wall penetration but more bandwidth; 2.4 GHz penetrates better but is crowded (microwaves, Bluetooth and wireless mice all live there). The choice is coverage versus throughput.
Note that the G in GHz is the decimal 10⁹, unlike the GiB (2³⁰) used for storage. Frequencies have no binary prefixes, so do not mix the two.
Frequently asked questions
How many hertz is 3000 rpm?
50 Hz. One rpm is 1/60 Hz, so divide revolutions per minute by 60.
Why does motor speed depend on mains frequency?
An induction motor's synchronous speed follows frequency and pole count: 3000 rpm at 50 Hz with 2 poles, 1500 with 4.
2.4 GHz or 5 GHz?
2.4 GHz penetrates walls better but is crowded; 5 GHz is faster and cleaner but has shorter range. Prefer 5 GHz up close.
Is the GHz unit the same G as in GB?
No. Frequency uses the decimal 10⁹, storage uses 2³⁰ — roughly 7% apart.
