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Convert kB to KiB
1 kB = 0.9765625 KiB
Type a value in kilobytes and the answer in kibibytes appears as you go. The conversion is exactly 0.9765625 KiB to the kilobyte, 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 kB is exactly 0.9765625 KiB — 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.
Kilobyte and Kibibyte
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.
A kibibyte is exactly 1,024 bytes. The name was coined in 1998 precisely so that "kilobyte" could go back to meaning 1,000, though the habit never fully took.
kilobytes to kibibytes in practice
500 kB is 488.3 KiB
— a lean web page.
64 kB is 62.5 KiB
— a long email.
kilobytes to kibibytes at a glance
| kB | KiB |
|---|---|
| 1 | 0.9765625 |
| 2 | 1.953125 |
| 5 | 4.8828125 |
| 10 | 9.765625 |
| 50 | 48.828125 |
| 100 | 97.65625 |
| 500 | 488.28125 |
| 1000 | 976.5625 |
Every figure here is computed from the same definition the calculator uses, so the table cannot drift away from the answer above it.
Convert kB to KiB: common questions
How many kibibytes are in a kilobyte?
Exactly 0.9765625. One kilobyte is 0.9765625 kibibytes, 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.