KB vs KiB — what is the difference?

A kilobyte (KB) is 1,000 bytes. A kibibyte (KiB) is 1,024 bytes. The SI prefixes (KB, MB, GB) are decimal; the IEC prefixes (KiB, MiB, GiB) are binary.

Why does my OS show 100 GB but the drive says 107?

Drives are sold using decimal units (100 × 10⁹ bytes = 100 GB). Operating systems often display sizes in binary (1 GiB = 1.073 GB), making the same number look smaller.

Network speeds: bits or bytes?

Network speeds (Mbps) are bits. Files (MB) are bytes. Divide bits by 8 to compare apples to apples.

SnapTools

Files never leave your device

Data Storage Converter

Convert between bytes, kilobytes, megabytes, gigabytes, terabytes, and bits — including both decimal (KB = 1000) and binary (KiB = 1024) conventions.

Bits

Bytes

Kilobytes (KB)

Megabytes (MB)

Gigabytes (GB)

Terabytes (TB)

Petabytes (PB)

How to use Data Storage

Pick decimal (KB) or binary (KiB) prefixes.
Type a number in any field — all sizes update.

How to use Data Storage

Frequently asked questions

KB vs KiB — what is the difference?

Why does my OS show 100 GB but the drive says 107?

Network speeds: bits or bytes?