Metric prefixes are pretty easy to understand and very handy for metric conversions. You don't have to know the nature of a unit to convert,
for example, from kilo-unit to mega-unit. You either multiply or divide by a power of ten. All metric prefixes indicate powers of 10. The most
commonly used prefixes are highlighted in bold in the table. Most people even in the countries where metric system is only used, only know
the most commonly used metric prefixes like 'kilo' and 'milli'. The prefixes like 'zepto' or 'yotta' are very specific and used mostly in science.

Prexis	Symbol	Factor
yotta	Y	1024 = 1,000,000,000,000,000,000,000,000
zetta	Z	1021 = 1,000,000,000,000,000,000,000
exa	E	1018 = 1,000,000,000,000,000,000
peta	P	1015 = 1,000,000,000,000,000
tera	T	1012 = 1,000,000,000,000
giga	G	109 = 1,000,000,000
mega	M	106 = 1,000,000
kilo	k	103 = 1,000
hecto	h	102 = 100
deka	da	101 = 10
deci	d	10-1 = 0.1
centi	c	10-2 = 0.01
milli	m	10-3 = 0.001
micro	µ	10-6 = 0.000,001
nano	n	10-9 = 0.000,000,001
pico	p	10-12 = 0,000,000,000,001
femto	f	10-15 = 0.000,000,000,000,001
atto	a	10-18 = 0.000,000,000,000,000,001
zepto	z	10-21 = 0.000,000,000,000,000,000,001
yocto	y	10-24 = 0.000,000,000,000,000,000,000,001