Mebibit (Mibit)

ComputingCurrent unit

Exactly 1,048,576 bits.

1 mebibit = 131,072 bytes (exactly).

1 mebibit = 131,072 bytes

About the mebibit

Mebibit means 2^20 bits exactly, which is 1,048,576 bits, or 131,072 bytes (128 kibibytes). It comes from the IEC's 1998 binary prefix set, with mebi formed from the first two letters of mega plus bi. The symbol is Mibit.

Compared with the decimal megabit of 1,000,000 bits, a mebibit is about 4.9 percent larger. As an arithmetic example, 16 mebibits come to 16 x 1,048,576 = 16,777,216 bits, which is 2 mebibytes. Serial links and network speeds, by contrast, are conventionally counted in decimal megabits per second.

NIST's page on binary prefixes explains the intended pronunciation, with the first syllable said like the matching SI prefix and the second as bee.

Sources: NIST: Prefixes for binary multiples; Wikipedia: Binary prefix; Wikipedia: Bit

Mebibit conversion chart

1 mebibit expressed in every other digital storage unit:

Unit1 mebibit
Bytes131,072
Kilobytes131.072
Megabytes0.131072
Gigabytes0.000131072
Terabytes1.31072×10⁻⁷
Bits1,048,576
Petabytes1.31072×10⁻¹⁰
Kibibytes128
Mebibytes0.125
Gibibytes0.0001220703125
Tebibytes1.192092896×10⁻⁷
Kilobits1,048.576
Megabits1.048576
Gigabits0.001048576
Exabytes1.31072×10⁻¹³
Zettabytes1.31072×10⁻¹⁶
Yottabytes1.31072×10⁻¹⁹
Pebibytes1.164153218×10⁻¹⁰
Exbibytes1.136868377×10⁻¹³
Terabits0.000001048576
Kibibits1,024
Gibibits0.0009765625
Nibbles262,144

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