Kilobyte (KB) to Megabyte (MB) Conversion

1 KB is equal to 0.001 MB (in SI, aka the decimal system, or base 10). 

1 KB is equal to 0.0009765625 MB (in the binary system, or base 2).

How many Megabytes (MB) in a Kilobyte (MB)?

1 Kilobyte is equal to 0.001 megabytes (decimal).

In other notation, 1 KB = 10^-3 MB in base 10 (SI).

1 Kilobyte is equal to 0.0009765625 megabytes (binary).

Put another way, 1 KB = 2^-10 MB in base 2.

Difference Between KB and MB

Megabyte (MB) is greater than Kilobyte (KB). A Megabyte is 1000x bigger than Kilobyte.

Kilobytes (KB) vs Megabytes (MB)

This table might be helpful in showing the difference between KB and MB:

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

Megabytes

Megabyte (MB) is a unit of stored or transferred digital info, and is used more extensively in info tech (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

Kilobyte in SI

1 Kilobyte = 10001 bytes

1MB = 10002 bytes, therefore:

1 byte = 1000-2 MB

Hence:

1 Kilobyte = 10001 * 1000-2 MB
1 Kilobyte = 1000-1 MB
1 Kilobyte = 0.001 Megabytes

Kilobyte in base 2

1 Kilobyte = 210 bytes
1 Kilobyte = 10241 bytes
1 byte = 1024-2 MB
1 Kilobyte = 10241 * 1024-2 MB
1 Kilobyte = 1024-1 MB
1 Kilobyte = 2-10 Megabytes
1 Kilobyte = 0.0009765625 Megabytes