Megabyte (MB) to Kilobyte (KB) Conversion

1 MB is equal to 1000 KB – under the decimal system / SI / base 10.

1 MB is equal to 1024 KB – under the binary system / base 2. 

How many Kilobytes (KB) in a Megabyte (MB)

1 Megabyte is the equivalent of 1000 kilobytes (in decimal).

1 MB is 10³ KB in base 10 (SI).

1 Megabyte is the equivalent of 1024 kilobytes (in binary).

1 MB is 2¹⁰ KB in base 2.

Difference Between MB and KB

The Megabyte unit symbol is MB. The Kilobyte unit symbol is KB.

A Megabyte is greater than Kilobyte. Megabyte is 1000x times bigger than Kilobyte in base 10 and 1024x bigger in base 2.

Megabytes vs Kilobytes

Megabytes (MB)	Kilobytes (KB)
106 bytes (base 10)	103 bytes (base 10)
10002 bytes	10001 bytes
1 million bytes	1,000 bytes
220 bytes (base 2)	210 bytes (base 2)
1,048,576 bytes	1,024 bytes
1 million × 8 bits	1,000 × 8 bits
8 million bits	8,000 bits

 

Megabytes

Megabyte (MB) is a unit of stored or transferred digital information, and is used more extensively in infotech (IT) and consumer technology.

Under the decimal system, one megabyte is the equivalent of 1 million bytes.

But 1 megabyte is used as 2²⁰ bytes, which is about 1.05 million bytes (1,048,576 bytes, to be exact).

The amount of digital information represented by megabytes is used for the size of a standard MP3 file, JPEG file, PNG image, and similar smaller file types.

Megabyte in SI and base 10 (decimal)

1 Megabyte = 10002 bytes
1 Megabyte = 1,000,000 bytes

Megabyte in base 2 (binary)

1 Megabyte = 220 bytes
1 Megabyte = 10242 bytes
1 Megabyte = 1,048,576 bytes

Kilobytes

Kilobyte (KB) measures the size of digital information (related to storage or transfer), such as text, sound, and image files. A kilobyte is 1000 bytes long which can be broken down into 1 KB chunks called a Byte – 1 KB=1000 Bytes

In computer science, KB is actually equal to 2¹⁰ bytes, which makes it equal to 1024 bytes.

Kilobytes are much less common than they once were because their values aren’t as relevant now that data storage capacity has increased so much.

In the old days, the Kilobyte was one of the most popular units of measurement in use. Kilobyte may still be used for certain, specific cases; however, the Gigabyte is now most commonly used. Given the ability to transfer and store information has gone up exponentially, Gigabytes are now more commonly used.

Kilobyte in SI and base 10 (decimal)

1 Kilobyte = 10001 bytes
1 Kilobyte = 1000 bytes

Kilobyte in base 2 (binary)

1 Kilobyte = 210 bytes
1 Kilobyte = 10241 bytes
1 Kilobyte = 1024 bytes

How to Calculate Megabytes to Kilobytes

Converting Megabytes (MB) to Kilobytes (KB) under base 10:

Megabyte in SI

1 Megabyte = 10002 bytes
1KB = 1000 bytes

Therefore:
1 byte = 1000-1 kilobytes

Hence:
1 Megabyte = 10002 * 1000-1 KB
1 Megabyte = 10001 Kilobytes
1 Megabyte = 1000 Kilobytes

Megabytes (MB) to Kilobytes (KB) in Base 2

Converting Megabytes (MB) to Kilobytes (KB) under base 2:

Megabyte in base 2
1 Megabyte = 220 bytes
1 Megabyte = 10242 bytes
1 byte = 1024-1 KB
1 Megabyte = 10242 * 1024-1 KB
1 Megabyte = 10241 Kilobytes
1 Megabyte = 210 Kilobytes
1 Megabyte = 1024 Kilobytes

 

We also have a convenient Megabyte (MB) to Kilobyte (KB) conversion table that can make lots of calculations simply easier to look up.

MB to KB Conversion Table

Megabytes (MB)	Kilobytes (KB) decimal	Kilobytes (KB) binary
1 MB	1,000 KB	1,024 KB
2 MB	2,000 KB	2,048 KB
3 MB	3,000 KB	3,072 KB
4 MB	4,000 KB	4,096 KB
5 MB	5,000 KB	5,120 KB
6 MB	6,000 KB	6,144 KB
7 MB	7,000 KB	7,168 KB
8 MB	8,000 KB	8,192 KB
9 MB	9,000 KB	9,216 KB
10 MB	10,000 KB	10,240 KB
11 MB	11,000 KB	11,264 KB
12 MB	12,000 KB	12,288 KB
13 MB	13,000 KB	13,312 KB
14 MB	14,000 KB	14,336 KB
15 MB	15,000 KB	15,360 KB
16 MB	16,000 KB	16,384 KB
17 MB	17,000 KB	17,408 KB
18 MB	18,000 KB	18,432 KB
19 MB	19,000 KB	19,456 KB
20 MB	20,000 KB	20,480 KB
21 MB	21,000 KB	21,504 KB
22 MB	22,000 KB	22,528 KB
23 MB	23,000 KB	23,552 KB
24 MB	24,000 KB	24,576 KB
25 MB	25,000 KB	25,600 KB
26 MB	26,000 KB	26,624 KB
27 MB	27,000 KB	27,648 KB
28 MB	28,000 KB	28,672 KB
29 MB	29,000 KB	29,696 KB
30 MB	30,000 KB	30,720 KB
31 MB	31,000 KB	31,744 KB
32 MB	32,000 KB	32,768 KB
33 MB	33,000 KB	33,792 KB
34 MB	34,000 KB	34,816 KB
35 MB	35,000 KB	35,840 KB
36 MB	36,000 KB	36,864 KB
37 MB	37,000 KB	37,888 KB
38 MB	38,000 KB	38,912 KB
39 MB	39,000 KB	39,936 KB
40 MB	40,000 KB	40,960 KB
41 MB	41,000 KB	41,984 KB
42 MB	42,000 KB	43,008 KB
43 MB	43,000 KB	44,032 KB
44 MB	44,000 KB	45,056 KB
45 MB	45,000 KB	46,080 KB
46 MB	46,000 KB	47,104 KB
47 MB	47,000 KB	48,128 KB
48 MB	48,000 KB	49,152 KB
49 MB	49,000 KB	50,176 KB
50 MB	50,000 KB	51,200 KB
51 MB	51,000 KB	52,224 KB
52 MB	52,000 KB	53,248 KB
53 MB	53,000 KB	54,272 KB
54 MB	54,000 KB	55,296 KB
55 MB	55,000 KB	56,320 KB
56 MB	56,000 KB	57,344 KB
57 MB	57,000 KB	58,368 KB
58 MB	58,000 KB	59,392 KB
59 MB	59,000 KB	60,416 KB
60 MB	60,000 KB	61,440 KB
61 MB	61,000 KB	62,464 KB
62 MB	62,000 KB	63,488 KB
63 MB	63,000 KB	64,512 KB
64 MB	64,000 KB	65,536 KB
65 MB	65,000 KB	66,560 KB
66 MB	66,000 KB	67,584 KB
67 MB	67,000 KB	68,608 KB
68 MB	68,000 KB	69,632 KB
69 MB	69,000 KB	70,656 KB
70 MB	70,000 KB	71,680 KB
71 MB	71,000 KB	72,704 KB
72 MB	72,000 KB	73,728 KB
73 MB	73,000 KB	74,752 KB
74 MB	74,000 KB	75,776 KB
75 MB	75,000 KB	76,800 KB
76 MB	76,000 KB	77,824 KB
77 MB	77,000 KB	78,848 KB
78 MB	78,000 KB	79,872 KB
79 MB	79,000 KB	80,896 KB
80 MB	80,000 KB	81,920 KB
81 MB	81,000 KB	82,944 KB
82 MB	82,000 KB	83,968 KB
83 MB	83,000 KB	84,992 KB
84 MB	84,000 KB	86,016 KB
85 MB	85,000 KB	87,040 KB
86 MB	86,000 KB	88,064 KB
87 MB	87,000 KB	89,088 KB
88 MB	88,000 KB	90,112 KB
89 MB	89,000 KB	91,136 KB
90 MB	90,000 KB	92,160 KB
91 MB	91,000 KB	93,184 KB
92 MB	92,000 KB	94,208 KB
93 MB	93,000 KB	95,232 KB
94 MB	94,000 KB	96,256 KB
95 MB	95,000 KB	97,280 KB
96 MB	96,000 KB	98,304 KB
97 MB	97,000 KB	99,328 KB
98 MB	98,000 KB	100,352 KB
99 MB	99,000 KB	101,376 KB
100 MB	100,000 KB	102,400 KB

 

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• Kilobyte (KB) to Gigabyte (GB) Conversion
• Gigabyte (GB) to Megabyte (MB) Conversion
• Which is Bigger – KB or MB?