|
Prefix
|
Factor
|
Fraction
|
|
centi |
10–2
|
1/100
(part per hundred)
|
|
milli |
10–3
|
1/1,000
(part per thousand)
|
|
micro |
10–6
|
1/1,000,000
(ppm, part per million)
|
|
nano |
10–9
|
1/1,000,000,000
(ppb, part per billion)
|
|
pico |
10–12
|
1/1,000,000,000,000
(ppt, part per trillion)
|
|
femto |
10–15
|
1/1,000,000,000,000,000
(ppq, part per quadrillion)
|
|
atto |
10–18
|
1/1,000,000,000,000,000,000
(part per quintillion)
|
|
In this Topic
