Data volume conversion

This calculator can be used to convert bits and bytes of data volume units. Select the unit of measurement that you know and enter its value. Then click on 'Calculate'.

The number of decimal places or floating point (Float) representation can be set.

Storage capacity prefixes

For data memories with binary addressing, storage capacities based on powers of two (2n bytes) are specified. The actually decimal SI prefixes were used to designate storage capacities (for kilos = 1024 instead of 1000).

To avoid ambiguity, the IEC proposed new unit prefixes for binary prefixes in 1996. The prefix is supplemented by the syllable "bi", which clarifies that they are binary multiples. Example: 1 Kibibyte (KiB) = 1024 bytes, 1 Mebibyte (MiB) = 1024 × 1024 bytes.

In practice, the recommendation was only partially implemented. Microsoft continues to use the SI prefixes for binary storage capacities (kilos = 1024). Other systems use both the old and the new variant.

Data volume

1B = 8b (1 Byte = 8 Bit)

SI (1000 based)

1kB = 10³B, 1MB = 10⁶B, 1GB = 10⁶B, 1TB = 10¹²B, 1PB = 10¹⁵B

IEC8000-13 (1024 based)

1KiB = 2¹⁰B, 1MiB = 2²⁰B, 1GiB = 2³⁰B, 1TiB = 2⁴⁰B, 1PiB = 2⁵⁰B