You probably have a hard drive in your home that’s one terabyte or more. If you open Computer (Windows Key + E), you’ll see your terabyte hard drive might only show a capacity of around 930 GB. Where did all those extra gigabytes go? Aren’t there a thousand gigabytes in a terabyte? If you have questions like these, this guide answers them.
Terabyte vs. Tebibyte
Hard drive manufacturers use the International System of Units (SI) convention to when listing hard drive capacity. Kilo-, mega-, giga-, and tera- are some of the prefixes used in accordance with the SI and are base-10 (decimal.) “Tera” means trillion so a terabyte is one trillion, 1,000,000,000,000, or 1020 bytes.