Data Storage Converter
Convert bit, byte, SI decimal (kB, MB, GB, TB) and IEC binary (KiB, MiB, GiB, TiB) units. Type in any unit; all others update instantly.
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About This Converter
This data storage converter handles 10 units across both the SI decimal system (kB, MB, GB, TB using powers of 1000) and the IEC binary system (KiB, MiB, GiB, TiB using powers of 1024). All conversions are mathematically exact, helping you understand why a 500 GB hard drive shows up as roughly 465 GiB in your operating system. It is ideal for IT professionals planning storage, developers estimating file sizes, or students learning about digital data measurement.
FAQ
kB vs KiB — what's the difference?
kB is decimal (1000 bytes). KiB is binary (1024 bytes). Likewise MB vs MiB, GB vs GiB, etc.
Bit vs byte?
1 byte = 8 bits. Network speeds are often in bits/s, while file sizes are in bytes.
Why do disks show less capacity than advertised?
Manufacturers use decimal GB (1 GB = 1,000,000,000 B). Operating systems often display binary GiB (1 GiB = 1,073,741,824 B), so numbers look smaller.
Tips for entering values
Select the unit first, enter a number once, and all tiles update instantly.