This converter works in bits as the base unit, with 1 Byte = 8 bit. It strictly separates the two prefix systems. Decimal (SI) prefixes use powers of 1000: 1 KB = 1000 B, 1 MB = 1000 KB, 1 GB = 1000 MB, 1 TB = 1000 GB, 1 PB = 1000 TB. Binary (IEC) prefixes use powers of 1024: 1 KiB = 1024 B, 1 MiB = 1024 KiB, 1 GiB = 1024 MiB, 1 TiB = 1024 GiB, 1 PiB = 1024 TiB.
The gap grows with size: a KiB is 2.4% larger than a KB, but a TiB is about 10% larger than a TB, which is why a "1 TB" drive (1,000,000,000,000 B) shows as roughly 931 GiB in an operating system that counts in binary. Network speeds are usually quoted in bits (Mbps), while file sizes are in Bytes — divide by 8 to compare. Every result keeps 12 significant figures to remove floating-point noise. All math runs locally in your browser; nothing is uploaded.