FREE WEB TOOL

Storage unit converter

Convert decimal and binary storage units.

Use tool

ValueInput unit

How to use it

Convert one storage value into decimal units (B, KB, MB, GB) and binary units (KiB, MiB, GiB) from a single input.

Enter a numeric value.
Choose the input unit from B, KB, MB, GB, TB, KiB, MiB or GiB.
Select Convert and compare the decimal and binary outputs.

Decimal: KB=1,000 B; MB=1,000,000 B; GB=1,000,000,000 B
Binary: KiB=1,024 B; MiB=1,048,576 B; GiB=1,073,741,824 B
Input: B / KB / MB / GB / TB / KiB / MiB / GiB
Output: B, KB, MB, GB, KiB, MiB, GiB

1 GB is about 953.674 MiB

The decimal value 1 GB equals 1,000,000,000 bytes. Dividing by 1,048,576 gives approximately 953.674 MiB.

GB and GiB are not interchangeable labels. Drive manufacturers often use decimal GB, while operating systems and technical tools may show binary-sized values.

Every conversion passes through bytes

The selected input unit is first converted to a byte count, then each output unit is calculated from that common value.

Decimal prefixes use powers of 1000

KB, MB, GB and TB follow SI-style factors in this tool: 10³, 10⁶, 10⁹ and 10¹² bytes.

Binary prefixes use powers of 1024

KiB, MiB and GiB use 2¹⁰, 2²⁰ and 2³⁰ bytes, which is why the numeric value differs from similarly named decimal units.

TB is accepted as input but the result list stops at GB/GiB

The current output includes byte through GB and GiB values. It does not add a separate TB or TiB result line.

Related references: Digital storage units · SI prefixes & units