Petabyte

A petabyte, PByte, or PB, is equal to 1,000,000,000,000,000 (10¹⁵) bytes.

TB

A terabyte or TB, is equal to 1,099,511,627,776 (2⁴⁰) bytes. However, the IEC defines a TB equal to 10¹², or 1,000,000,000,000, bytes. Therefore, a TB could be equal to either of these values.

Mb and MB

1. Abbreviated as meg or mbit, MB is short for megabyte. An MB is a common measurement used with computer storage media. A Megabyte is equal to 1,048,576 bytes. However, the IEC defines that one MB is equal to 1,000,000 bytes, or 10⁶. Therefore, an MB could really equal either of these values although commonly the first value is used in computing.

• How much is 1 byte, kilobyte, megabyte, gigabyte, etc.?

2. Mb is short for megabit and is 1,000,000 (10⁶) bits. This term is used to express the rate data is transferred. For example, "10/100 Mbps" represents 10 or 100 megabits per second, the common speed of a standard network card.

3. mb or MB is also short for Motherboard, see the motherboard definition for additional information.