Binary prefix

Value SI Value IEC JEDEC 1000 k kilo 1024 Ki kibi K kilo 10002 M mega 10242 Mi mebi M mega 10003 G giga 10243 Gi gibi G giga 10004 T tera 10244 Ti tebi T tera 10005 P peta 10245 Pi pebi — 10006 E exa 10246 Ei exbi — 10007 Z zetta 10247 Zi zebi — 10008 Y yotta 10248 Yi yobi — 10009 R ronna 10249 Ri robi — 100010 Q quetta 102410 Qi quebi —

Specific units of IEC 60027-2 A.2 and ISO/IEC 80000:13-2025

Name Symbol Base 2 Base 1024 Value Base 10 kibi Ki 210 10241 1024 = 1.024×103 mebi Mi 220 10242 1048576 ≈ 1.049×106 gibi Gi 230 10243 1073741824 ≈ 1.074×109 tebi Ti 240 10244 1099511627776 ≈ 1.100×1012 pebi Pi 250 10245 1125899906842624 ≈ 1.126×1015 exbi Ei 260 10246 1152921504606846976 ≈ 1.153×1018 zebi Zi 270 10247 1180591620717411303424 ≈ 1.181×1021 yobi Yi 280 10248 1208925819614629174706176 ≈ 1.209×1024 robi Ri 290 10249 1237940039285380274899124224 ≈ 1.238×1027 quebi Qi 2100 102410 1267650600228229401496703205376 ≈ 1.268×1030