The metric system defines 20 decimal prefixes and symbols representing powers of 10 that you can combine with any standard unit of measurement, such as "B," the symbol for "byte." The symbol "G", or "giga," means 1,000 raised to the third power. The symbol "T," or "tera," means 1,000 raised to the fourth power. Therefore, 1,000GB is the same as 1TB. If you have 2,000GB, divide that by 1,000 to convert it to 2TB. Or, if you have 5TB, multiply that by 1,000 to convert it to 5,000GB.
Computer Memory Conventions
When referring to quantities of computer memory, "G" commonly means 1,024 raised to the third power and "T" often means 1,024 raised to the fourth power. Disk space quantities, however, follow the metric standard. If you become involved in a technical discussion about computer memory, you might need to clarify whether the base number is 1,000 or 1,024.
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