Units and Prefixes

SI units and the metric prefixes engineers use every day.

Beginner

Prefix	Symbol	Factor
giga	G	$10^9$
mega	M	$10^6$
kilo	k	$10^3$
milli	m	$10^{-3}$
micro	µ	$10^{-6}$
nano	n	$10^{-9}$
pico	p	$10^{-12}$
Examples: 4.7 kΩ, 100 nF, 20 mA, 16 MHz. Watch the case: "m" (milli) vs "M" (mega). Resistor codes like 4K7 mean 4.7 kΩ.

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