Megahertz (MHz) is a common unit of frequency that represents one million cycles per second and is particularly known for its vital role in telecommunications and computing. The term hertz pays homage to Heinrich Hertz, the first person to conclusively prove the existence of electromagnetic waves. In radio broadcasting, the station dial numbers you tune into represent megahertz, which indicate the carrier frequency of the radio station. For example, a frequency of 101.1 MHz means the wave completes 101.1 million cycles every second!
In computing, the speed of the early personal computers was often measured in megahertz. Though we’ve progressed to gigahertz in modern-day processors, the megahertz era marked some groundbreaking advancements in technology. The original IBM PC, introduced in 1981, had a processor speed of just 4.77 MHz. Today, such performance pales in comparison, revealing the incredible strides in processing power over the decades.
Kilohertz (kHz), a unit of frequency equal to 1,000 hertz, is a central part of our digital world. It’s prominently used to measure frequencies of audio signals, radio transmissions, and clock speeds in computers. The human ear can typically hear sounds ranging from 20 Hz to 20 kHz. Interestingly, ultrasonic devices like bat echolocation operate at frequencies well beyond this range, often between 20 kHz and 200 kHz, allowing them sophistication in navigation and hunting that humans cannot directly experience.
In radio broadcasting, AM radio stations operate at kilohertz frequencies, generally between 530 kHz to 1700 kHz, catering to long-distance communication. This contrasts with FM radio, which uses the higher megahertz range. Understanding kilohertz can give insight into how different signals traverse space, influencing everything from global communications to wildlife studies.
Megahertz | Kilohertz |
---|---|
0
MHz
|
0
kHz
|
1
MHz
|
1000
kHz
|
2
MHz
|
2000
kHz
|
3
MHz
|
3000
kHz
|
4
MHz
|
4000
kHz
|
5
MHz
|
5000
kHz
|
6
MHz
|
6000
kHz
|
7
MHz
|
7000
kHz
|
8
MHz
|
8000
kHz
|
9
MHz
|
9000
kHz
|
10
MHz
|
10000
kHz
|
11
MHz
|
11000
kHz
|
12
MHz
|
12000
kHz
|
13
MHz
|
13000
kHz
|
14
MHz
|
14000
kHz
|
15
MHz
|
15000
kHz
|
16
MHz
|
16000
kHz
|
17
MHz
|
17000
kHz
|
18
MHz
|
18000
kHz
|
19
MHz
|
19000
kHz
|
20
MHz
|
20000
kHz
|
21
MHz
|
21000
kHz
|
22
MHz
|
22000
kHz
|
23
MHz
|
23000
kHz
|
24
MHz
|
24000
kHz
|
25
MHz
|
25000
kHz
|
26
MHz
|
26000
kHz
|
27
MHz
|
27000
kHz
|
28
MHz
|
28000
kHz
|
29
MHz
|
29000
kHz
|
30
MHz
|
30000
kHz
|
31
MHz
|
31000
kHz
|
32
MHz
|
32000
kHz
|
33
MHz
|
33000
kHz
|
34
MHz
|
34000
kHz
|
35
MHz
|
35000
kHz
|
36
MHz
|
36000
kHz
|
37
MHz
|
37000
kHz
|
38
MHz
|
38000
kHz
|
39
MHz
|
39000
kHz
|
40
MHz
|
40000
kHz
|
41
MHz
|
41000
kHz
|
42
MHz
|
42000
kHz
|
43
MHz
|
43000
kHz
|
44
MHz
|
44000
kHz
|
45
MHz
|
45000
kHz
|
46
MHz
|
46000
kHz
|
47
MHz
|
47000
kHz
|
48
MHz
|
48000
kHz
|
49
MHz
|
49000
kHz
|
50
MHz
|
50000
kHz
|
51
MHz
|
51000
kHz
|
52
MHz
|
52000
kHz
|
53
MHz
|
53000
kHz
|
54
MHz
|
54000
kHz
|
55
MHz
|
55000
kHz
|
56
MHz
|
56000
kHz
|
57
MHz
|
57000
kHz
|
58
MHz
|
58000
kHz
|
59
MHz
|
59000
kHz
|
60
MHz
|
60000
kHz
|
61
MHz
|
61000
kHz
|
62
MHz
|
62000
kHz
|
63
MHz
|
63000
kHz
|
64
MHz
|
64000
kHz
|
65
MHz
|
65000
kHz
|
66
MHz
|
66000
kHz
|
67
MHz
|
67000
kHz
|
68
MHz
|
68000
kHz
|
69
MHz
|
69000
kHz
|
70
MHz
|
70000
kHz
|
71
MHz
|
71000
kHz
|
72
MHz
|
72000
kHz
|
73
MHz
|
73000
kHz
|
74
MHz
|
74000
kHz
|
75
MHz
|
75000
kHz
|
76
MHz
|
76000
kHz
|
77
MHz
|
77000
kHz
|
78
MHz
|
78000
kHz
|
79
MHz
|
79000
kHz
|
80
MHz
|
80000
kHz
|
81
MHz
|
81000
kHz
|
82
MHz
|
82000
kHz
|
83
MHz
|
83000
kHz
|
84
MHz
|
84000
kHz
|
85
MHz
|
85000
kHz
|
86
MHz
|
86000
kHz
|
87
MHz
|
87000
kHz
|
88
MHz
|
88000
kHz
|
89
MHz
|
89000
kHz
|
90
MHz
|
90000
kHz
|
91
MHz
|
91000
kHz
|
92
MHz
|
92000
kHz
|
93
MHz
|
93000
kHz
|
94
MHz
|
94000
kHz
|
95
MHz
|
95000
kHz
|
96
MHz
|
96000
kHz
|
97
MHz
|
97000
kHz
|
98
MHz
|
98000
kHz
|
99
MHz
|
99000
kHz
|
100
MHz
|
100000
kHz
|
If you like the website, share it on social media.