How to convert megabytes to kilobytes
Step-by-step explanation of how to convert megabytes to kilobytes, with formulas, worked examples, and a free online calculator.
To convert megabytes to kilobytes, multiply by 1024. The formula is: KB = MB × 1024. For example, 5 MB × 1024 = 5120 KB. This conversion is used when comparing file sizes, data transfer limits, and memory capacity. Note that these conversions use the binary (1024-based) definition common in computing, not the SI (1000-based) definition that some standards bodies prefer. For SI units: 1 MB = 1000 KB, 1 GB = 1000 MB. Most operating systems and software use the binary definition by default.
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Formula
Kilobytes = Megabytes × conversion factor