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Megabytes to kilobytes

1 megabyte = 1,000 kilobytes

Type a value in megabytes (MB) to get kilobytes (kB) straight away. A megabyte is larger than a kilobyte, so the number goes up. Both units belong to data storage, measured here against the byte.

1 MB = 1,000 kB

Formula

kB = MB × 1,000

One megabyte is 1,000 kilobytes, so multiply the megabyte value by that factor. Here MB is the value in megabytes and kB is the result in kilobytes.

Worked example: 700 megabytes × 1,000 = 700,000 kilobytes.

Megabytes to kilobytes table

megabytes (MB)kilobytes (kB)
1 MB1,000 kB
2 MB2,000 kB
3 MB3,000 kB
4 MB4,000 kB
5 MB5,000 kB
6 MB6,000 kB
7 MB7,000 kB
8 MB8,000 kB
9 MB9,000 kB
10 MB10,000 kB
15 MB15,000 kB
20 MB20,000 kB
25 MB25,000 kB
30 MB30,000 kB
40 MB40,000 kB
50 MB50,000 kB
60 MB60,000 kB
75 MB75,000 kB
100 MB100,000 kB

Everyday megabytes in kilobytes

What it isMBkB
a minute of compressed MP3 (about)1 MB1,000 kB
a phone photo5 MB5,000 kB
an email attachment limit25 MB25,000 kB
a short HD video100 MB100,000 kB
a CD700 MB700,000 kB

Quick estimate in your head

Multiply by 10^3: move the decimal point 3 places right (add 3 zeros).

About the units

Megabyte (MB). 1,000,000 bytes (decimal). Windows shows MiB values but labels them MB.

Kilobyte (kB). 1,000 bytes in the SI (decimal) system that drive makers and macOS use.

Going the other way, 1 kilobyte is 0.001 megabytes.

Questions

How many kilobytes are in 1 megabyte?

1 megabyte is 1,000 kilobytes, and 1 kilobyte is 0.001 megabytes.

How do I convert megabytes to kilobytes?

Use kB = MB × 1,000. For example, 700 megabytes × 1,000 = 700,000 kilobytes.

Why does my drive show less space than advertised?

Makers use decimal units (1 GB = 10⁹ bytes) while many operating systems count in binary (1 GiB = 2³⁰ bytes). A 1 TB drive therefore shows about 931 GiB.

How much is a CD in kilobytes?

700 MB is 700,000 kB.

Source for the conversion factor: NIST: prefixes for binary multiples (IEC 80000-13).

Related conversions

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