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Convert MiB to kB
1 MiB = 1048.576 kB
Type a value in mebibytes and the answer in kilobytes appears as you go. The conversion is exactly 1048.576 kB to the mebibyte, and it happens on your own machine — this page asks nothing of a server once it has loaded.
Where it runs
In your browser. The number you type is never part of a request.
Exact by definition
1 MiB is exactly 1048.576 kB — a definition, not a rounded factor.
Answers as you type
No button, no wait. The worked answer is already on the page before any script runs.
Mebibyte and Kilobyte
A mebibyte is 1,024 kibibytes, or 1,048,576 bytes. Linux tools and memory sizes generally mean this even when they print "MB".
A kilobyte is 1,000 bytes when a standards body defines it and 1,024 when an operating system does. This page uses 1,000; the kibibyte is the unit that means 1,024.
mebibytes to kilobytes in practice
700 MiB is 734000 kB
— an audio CD, which is where the number comes from.
8 MiB is 8389 kB
— a chunk of memory a program might allocate.
mebibytes to kilobytes at a glance
| MiB | kB |
|---|---|
| 1 | 1048.576 |
| 2 | 2097.152 |
| 5 | 5242.88 |
| 10 | 10485.76 |
| 50 | 52428.8 |
| 100 | 104857.6 |
| 500 | 524288 |
| 1000 | 1048576 |
Every figure here is computed from the same definition the calculator uses, so the table cannot drift away from the answer above it.
Convert MiB to kB: common questions
How many kilobytes are in a mebibyte?
Exactly 1048.576. One mebibyte is 1048.576 kilobytes, and the box above will do it for any figure you type.
Is this conversion exact, or rounded?
The ratio is exact. It is not a rounded constant typed into a table: it is derived from the definitions of the two units, so it agrees with any other correct converter to as many digits as you care to compare.
Why does another converter show a slightly different number?
Almost always rounding rather than disagreement. Many converters cut the answer to two or four decimals, and some carry a factor that was rounded before the multiplication rather than after. The figures here are computed from the exact definitions and only rounded on the way to the screen.
Where these figures come from
The claims this page makes about data units are checkable, and these are the documents that settle them.
How this page works
The factor is a constant in the page and the arithmetic is four operations, so nothing is sent anywhere and nothing needs to be. The number you type never leaves the browser — there is no request for it to travel in.