Multiples & submultiples

Multiple Prefix Symbol 103 kilo K 106 mega M 109 giga G 1012 tera T 1015 peta P 1018 exa E

Submultiple Prefix Symbol 10-3 milli m 10-6 micro µ 10-9 nano n 10-12 pico p 10-15 femto f 10-18 ato a

Units

Concept	Unit	Symbol	Base Unit
Force	newton	N	kg m s-2
Pression	pascal	Pa	kg m-1 s-2
Energy	joule	J	kg m2 s-2
Power	watt	W	kg m2 s-3
Electrical charge	coulomb	C	A s
Electrical Potential	volt	V	kg m2 s-3 A-1
Electrical Resistance	ohm	Ω	kg m2 s-3 A-2
Capacity	farad	F	kg-1 m-2 s4 A2
Magnetic Flux	tesla	T	kg s-2 A-1
Radioactive activity	bequerel	Bq	s-1

Conversions

Concept	SI Unit	AS Unit	Conversion
Length	m	pi, po	1pi = 12 po 1po = 2,54 cm
Surface	m2	pi2, po2	1m2 = 10.76 pi2
Volume	m3	pi3, po3, Gal.	1Gal.US = 3.785 l
Mass	kg	lbm	1 kg = 2.2 lbm
Force	N	lbf	1lbf = 4.45 N
Pression	Pa	Psi	1atm = 101.3 kPa = 14.7 Psi = 760 mHg = 10.33 mH2O
Energy	J, cal	Btu	1 cal = 4.18 J 1 Btu = 1.055 kJ
Power	W	HP	1 HP = 746 W