Terabytes to Gigabytes

In the binary convention used by Windows and most operating systems, 1 TB = 1,024 GB, and that is what this converter applies. Drive manufacturers use the decimal convention instead, where 1 TB = 1,000 GB.

The label counts 1 TB as 1,000,000,000,000 bytes, while the operating system divides that figure by 1,024 three times: 1,000,000,000,000 ÷ 1024³ ≈ 931.32. No space goes missing — the two sides simply count in different units.

A gibibyte (GiB) is exactly 1024³ bytes, the IEC unit, while a gigabyte in the strict SI sense is 1000³ bytes. Everyday usage calls 1024³ bytes a gigabyte, and this converter follows that everyday convention.