ConverterMB to kB Converter
Expand a megabyte quantity into the smaller prefix used by a report, manifest, or limit. The selected convention determines whether the multiplier is 1000 or 1024 and updates the labels with it.
Decimal SI is selected. Enter up to 120 significant digits using a decimal point or scientific notation with exponent magnitude no greater than 1000. Commas and negative quantities are rejected.
Two Multipliers, Two Unit Names
Decimal SI uses kB = MB x 1000. IEC Binary uses KiB = MiB x 1024. The byte quantity may represent the same magnitude while the displayed number changes with the convention.
Keep The Original Label In A Manifest
When a file list or API response uses MB, do not replace the source label with KiB unless its specification confirms binary units. Record the selected convention beside the converted value.
Frequently Asked Questions
One MB is 1000 kB in Decimal SI. One MiB is 1024 KiB in IEC Binary.
No. Changing the display unit or convention does not alter the underlying file; it changes how the quantity is expressed.
No. MB is decimal and MiB is binary in the conventions supported here.