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.Dd November 30, 2010 .Dt ORDERS 7 .Os .Sh NAME .Nm orders .Nd orders of magnitude .Sh DESCRIPTION The following table lists common multiple of bytes. l -column -offset 2n \ "Kilobyte" "Prefix" "Power of 2" "Power of 10" t Sy Name Ta Sy Prefix Ta Sy Power of 2 Ta Sy Power of 10 t Kilobyte Ta kB Ta 2^10 Ta 10^3 t Megabyte Ta MB Ta 2^20 Ta 10^6 t Gigabyte Ta GB Ta 2^30 Ta 10^9 t Terabyte Ta TB Ta 2^40 Ta 10^12 t Petabyte Ta PB Ta 2^50 Ta 10^15 t Exabyte Ta EB Ta 2^60 Ta 10^18 t Zettabyte Ta ZB Ta 2^70 Ta 10^21 t Yottabyte Ta YB Ta 2^80 Ta 10^24 .El
p The following table lists common orders of magnitude as a power of ten. l -column -offset 2n \ "Septillionth" "Order" "Prefix" "Symbol" "Decimal" t Sy Name Ta Sy Order Ta Sy Prefix Ta Sy Symbol Ta Sy Decimal t Septillionth Ta -24 Ta yocto Ta y Ta 0.000000000000000000000001 t Sextillionth Ta -21 Ta zepto Ta z Ta 0.000000000000000000001 t Quintillionth Ta -18 Ta atto Ta a Ta 0.000000000000000001 t Quadrillionth Ta -15 Ta femto Ta f Ta 0.000000000000001 t Trillionth Ta -12 Ta pico Ta p Ta 0.000000000001 t Billionth Ta -9 Ta nano Ta n Ta 0.000000001 t Millionth Ta -6 Ta micro Ta mu Ta 0.000001 t Thousandth Ta -3 Ta milli Ta m Ta 0.001 t Hundredth Ta -2 Ta centi Ta c Ta 0.01 t Tenth Ta -1 Ta deci Ta d Ta 0.1 t One Ta 0 Ta - Ta - Ta 1 t Ten Ta 1 Ta deca Ta da Ta 10 t Hundred Ta 2 Ta hecto Ta h Ta 100 t Thousand Ta 3 Ta kilo Ta k Ta 1000 t Million Ta 6 Ta mega Ta M Ta 1000000 t Billion Ta 9 Ta giga Ta G Ta 1 000000000 t Trillion Ta 12 Ta tera Ta T Ta 1000000000000 t Quadrillion Ta 15 Ta peta Ta P Ta 1000000000000000 t Quintillion Ta 18 Ta exa Ta E Ta 1000000000000000000 t Sextillion Ta 21 Ta zetta Ta Z Ta 1000000000000000000000 t Septillion Ta 24 Ta yotta Ta Y Ta 1000000000000000000000000 .El .Sh STANDARDS There have been various attempts to standardize the set of binary prefixes. Organizations such as International Electrotechnical Commission
q Tn IEC have proposed new prefixes such as .Dq kibi , .Dq mebi , .Dq gibi , and .Dq yobi , but the adoption has been slow at best.
Indexes created Sun Nov 02 23:10:09 GMT 2025