Decimal vs Binary Data Units Comparison Table

Data units can be expressed using either the decimal (base-10) system or the binary (base-2) system. While the names may look similar, decimal and binary units represent different amounts of data. For example, a kilobit (kb) equals 1,000 bits, while a kibibit (Kib) equals 1,024 bits.

This comparison table shows the equivalent values of common decimal and binary data units, from kilobits and megabits to larger units such as terabits, petabits, and beyond. It makes it easy to see how the two systems differ and understand the relationship between units such as kb and Kib, Mb and Mib, Gb and Gib, and Tb and Tib.

Use the table below as a quick reference when working with data storage, memory, networking, file sizes, and other applications where decimal and binary data units are used.

Bit Units

Decimal Unit Binary Unit
Kilobit (kb)
1,000 Bits		 Kibibit (Kib)
1,024 Bits
Megabit (Mb)
10002 (1,000,000) Bits		 Mebibit (Mib)
10242 (1,048,576) Bits
Gigabit (Gb)
10003 (1,000,000,000) Bits		 Gibibit (Gib)
10243 (1,073,741,824) Bits
Terabit (Tb)
10004 (1,000,000,000,000) Bits		 Tebibit (Tib)
10244 (1,099,511,627,776) Bits
Petabit (Pb)
10005 (1,000,000,000,000,000) Bits		 Pebibit (Pib)
10245 (1,125,899,906,842,624) Bits
Exabit (Eb)
10006 (1,000,000,000,000,000,000) Bits		 Exbibit (Eib)
10246 (1,152,921,504,606,846,976) Bits
Zettabit (Zb)
10007 (1,000,000,000,000,000,000,000) Bits 		Zebibit (Zib)
10247 (1,180,591,620,717,411,303,424) Bits
Yottabit (Yb)
10008 (1,000,000,000,000,000,000,000,000) Bits 		Yobibit (Yib)
10248 (1,208,925,819,614,629,174,706,176) Bits

Byte Units

Decimal Unit Binary Unit
Kilobyte (kB)
1000 (1,000) Bytes		 Kibibyte (KiB)
1024 (1,024) Bytes
Megabyte (MB)
10002 (1,000,000) Bytes		 Mebibyte (MiB)
10242 (1,048,576) Bytes
Gigabyte (GB)
10003 (1,000,000,000) Bytes		 Gibibyte (GiB)
10243 (1,073,741,824) Bytes
Terabyte (TB)
10004 (1,000,000,000,000) Bytes		 Tebibyte (TiB)
10244 (1,099,511,627,776) Bytes
Petabyte (PB)
10005 (1,000,000,000,000,000) Bytes		 Pebibyte (PiB)
10245 (1,125,899,906,842,624) Bytes
Exabyte (EB)
10006 (1,000,000,000,000,000,000) Bytes 		Exbibyte (EiB)
10246 (1,152,921,504,606,846,976) Bytes
Zettabyte (ZB)
10007 (1,000,000,000,000,000,000,000) Bytes 		Zebibyte (ZiB)
10247 (1,180,591,620,717,411,303,424) Bytes
Yottabyte (YB)
10008 (1,000,000,000,000,000,000,000,000) Bytes 		Yobibyte (YiB)
10248 (1,208,925,819,614,629,174,706,176) Bytes