How many kibibytes are in a mebibyte?

Exactly 1024 kibibytes equal one mebibyte. Both KiB and MiB are IEC binary units (powers of two), so the relationship is always exact: 1 MiB = 1024 KiB = 1,048,576 bytes.

How do I convert KiB to MiB?

Divide the KiB value by 1024. For example, 2048 KiB ÷ 1024 = 2 MiB. For values smaller than 1024 KiB the result is a fraction: 512 KiB = 0.5 MiB.

What is the difference between MiB and MB?

1 MiB (mebibyte, IEC binary) = 1,048,576 bytes. 1 MB (megabyte, SI decimal) = 1,000,000 bytes. Storage manufacturers use the decimal MB; operating systems and RAM use the binary MiB. The gap is about 4.9 percent.

Why does Linux report memory in KiB instead of MiB?

Tools like /proc/meminfo report in KiB for finer granularity — memory can be allocated in 4 KiB pages, so KiB avoids fractional values in most system outputs. Dividing by 1024 gives the MiB figure.

Is the conversion exact?

Yes for integer KiB inputs that are multiples of 1024. For non-multiples the result is an exact fraction; JavaScript 64-bit floating-point arithmetic is accurate to 15–16 significant digits for any practical input.

Kibibytes to Mebibytes Converter

Name: Kibibytes to Mebibytes Converter
Availability: InStock
Author: Nham Vu

Enter a kibibyte (KiB) value and instantly see the exact mebibyte count using the IEC binary standard where 1 MiB = 1024 KiB.

Enter Kibibytes

Kibibytes (KiB)

MiB vs MB — what is the difference?

1 MiB (mebibyte, binary) = 1,048,576 bytes

1 MB (megabyte, decimal) = 1,000,000 bytes

1 MiB (binary) = 1,024 KiB

IEC 80000-13 introduced "MiB" to give the binary 1,048,576-byte unit an unambiguous name, distinct from the decimal megabyte used by storage manufacturers.

Result

Enter a KiB value and click Convert.

Common KiB to MiB Reference

KiB	MiB (÷ 1024)	MB (decimal)	Common size

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Summary

Enter a kibibyte (KiB) value and instantly see the exact mebibyte count using the IEC binary standard where 1 MiB = 1024 KiB.

How it works

Enter any number of kibibytes in the input field.
The converter divides by 1024 to produce the mebibyte count (IEC binary standard).
A secondary result shows the equivalent in megabytes (MB) using the SI decimal standard for comparison.
The reference table lists common KiB values alongside their exact MiB equivalents.
Copy any result with the copy button.

Use cases

Convert RAM or cache sizes reported in KiB to more readable MiB values.
Translate Linux /proc/meminfo output (in KiB) to MiB for quick analysis.
Verify that a buffer or partition size in KiB matches an expected MiB count.
Check file sizes from disk utilities that report in KiB against MiB thresholds.
Clarify the MiB vs MB distinction when writing technical documentation.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu