Free Data Size Calculator calculator with clear step-by-step results.
Converts a data quantity into bytes and back out in both the decimal units storage vendors use and the binary units operating systems report. The 7% gap between a gigabyte and a gibibyte is why a drive sold as 1 TB shows as roughly 931 GB once formatted.
Decimal units
1 KB = 1,000 B, 1 MB = 10^6 B, 1 GB = 10^9 B
Binary units
1 GiB = 1,024^3 B = 1,073,741,824 B
Manufacturers count decimal gigabytes while most operating systems display binary gibibytes. A 1 TB drive is 10^12 bytes, which is 931 GiB - before filesystem overhead.
No. Network speeds are quoted in bits per second and file sizes in bytes, a factor of eight apart. A 100 Mbps link transfers at most about 12.5 MB per second.