{"id":55,"date":"2006-05-31T11:05:37","date_gmt":"2006-05-31T11:05:37","guid":{"rendered":"https:\/\/www.garfnet.org.uk\/cms\/metric-prefixes\/"},"modified":"2026-09-02T16:56:03","modified_gmt":"2026-09-02T16:56:03","slug":"metric-prefixes","status":"publish","type":"page","link":"https:\/\/garfnet.org.uk\/cms\/tables\/general\/metric-prefixes\/","title":{"rendered":"Metric prefixes"},"content":{"rendered":"

These are the commonly used SI metric multiplier prefixes… <\/b><\/p>\n

Unit<\/span><\/a><\/div><\/th>
Abbreviation<\/span><\/a><\/div><\/th>
Power of Ten<\/span><\/a><\/div><\/th><\/tr><\/thead>
Quetto<\/div><\/td>
q<\/div><\/td>
1.E-30<\/div><\/td><\/tr>
Ronno<\/div><\/td>
r<\/div><\/td>
1.E-27<\/div><\/td><\/tr>
Yotto<\/div><\/td>
y<\/div><\/td>
1.E-24<\/div><\/td><\/tr>
Zepto<\/div><\/td>
z<\/div><\/td>
1.E-21<\/div><\/td><\/tr>
Atto<\/div><\/td>
a<\/div><\/td>
1.E-18<\/div><\/td><\/tr>
Femto<\/div><\/td>
f<\/div><\/td>
1.E-15<\/div><\/td><\/tr>
Pico<\/div><\/td>
p<\/div><\/td>
1.E-12<\/div><\/td><\/tr>
Nano<\/div><\/td>
n<\/div><\/td>
1.E-09<\/div><\/td><\/tr>
Micro<\/div><\/td>
\u00b5<\/div><\/td>
1.E-06<\/div><\/td><\/tr>
Milli<\/div><\/td>
m<\/div><\/td>
1.E-03<\/div><\/td><\/tr>
Centi<\/div><\/td>
c<\/div><\/td>
1.E-02<\/div><\/td><\/tr>
Deci<\/div><\/td>
d<\/div><\/td>
1.E-01<\/div><\/td><\/tr>
<\/div><\/td>
<\/div><\/td>
0<\/div><\/td><\/tr>
Deca<\/div><\/td>
da<\/div><\/td>
1.E+01<\/div><\/td><\/tr>
Hecto<\/div><\/td>
h<\/div><\/td>
1.E+02<\/div><\/td><\/tr>
Kilo<\/div><\/td>
k<\/div><\/td>
1.E+03<\/div><\/td><\/tr>
Myria<\/div><\/td>
(rare)<\/div><\/td>
1.E+04<\/div><\/td><\/tr>
Mega<\/div><\/td>
M<\/div><\/td>
1.E+06<\/div><\/td><\/tr>
Giga<\/div><\/td>
G<\/div><\/td>
1.E+09<\/div><\/td><\/tr>
Tera<\/div><\/td>
T<\/div><\/td>
1.E+12<\/div><\/td><\/tr>
Peta<\/div><\/td>
P<\/div><\/td>
1.E+15<\/div><\/td><\/tr>
Exa<\/div><\/td>
E<\/div><\/td>
1.E+18<\/div><\/td><\/tr>
Zetta<\/div><\/td>
Z<\/div><\/td>
1.E+21<\/div><\/td><\/tr>
Yotta<\/div><\/td>
Y<\/div><\/td>
1.E+24<\/div><\/td><\/tr>
Ronna<\/div><\/td>
R<\/div><\/td>
1.E+27<\/div><\/td><\/tr>
Quetta<\/div><\/td>
Q<\/div><\/td>
1.E+30<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n