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Data Storage Converter
Convert between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes and their binary (IEC) counterparts. Edit any field to update all others.
Data Storage Converter
Convert between decimal (SI) storage units — KB, MB, GB, TB, PB — and their binary (IEC) equivalents — KiB, MiB, GiB, TiB. Edit any field and all others update automatically.
Decimal (SI) vs Binary (IEC)
- Decimal: 1 KB = 1 000 bytes, 1 MB = 1 000 000 bytes. Used by storage manufacturers and network speeds.
- Binary (IEC): 1 KiB = 1 024 bytes, 1 MiB = 1 048 576 bytes. Used by operating systems to report RAM and file sizes.
Why the difference matters
A hard drive advertised as “1 TB” stores 1 000 000 000 000 bytes. Your OS reports it as ~931 GiB. The gap widens at larger sizes — a 1 PB drive appears as ~888 TiB on the OS.
Quick reference
- 1 B = 8 bits
- 1 KB = 1 000 B | 1 KiB = 1 024 B
- 1 MB = 1 000 KB | 1 MiB = 1 024 KiB
- 1 GB = 1 000 MB | 1 GiB = 1 024 MiB
- 1 TB = 1 000 GB | 1 TiB = 1 024 GiB