MEASUREMENTS AND UNITS

BASIC UNITS

BASIC QUANTITY	BASIC UNIT	SYMBOL
Length	Meter	m
Mass	Kilogram	kg
Time	Second	s
Temperature	Kelvin	K
Electric current	Ampere	A
Luminous intensity	Candela	cd
Amount of substance	Mole	mol

DERIVED UNITS

QUANTITY	UNIT	SYMBOL
Area	Square meter	m2
Volume	Cubic meter	m3
Density	Kilogram per cubic meter	Kg/m3
velocity	Meter per second	m/s
Acceleration	Meter per second square	m/s2
Force	Newton	N (kg.m/s2)
Pressure, Stress	Newton per meter square (Pascal)	N/m2 P
Moment of force	Newton meter	N.m
Work, Energy, Heat	Joule	J
Power	Watt	W
Calorific value	Kilojoule per kilogram	Kj/kg
Electric potential	Volt	V
Electromotive force	Volt	V
Electric current	Ampere	A
Electric resistance	Ohm	Ω
Specific resistance	Ohm metre	Ω m
Conductance	Siemens	S

TEMPERATURE SCALE

SCALE	FREEZING POINT	BOILING POINT	ABSOLUTE ZERO
Celsius	0oC	1000C	-273.15
Fahrenheit	32oF	2120F	-459.67
Kelvin	273.15 K	373 K	0

* Celsius and Fahrenheit are the same at  -40^oC.

Temperature conversion formula

CONVERSION	FORMULA
Celsius to Fahrenheit	0 F = 9/5 (0 C)+ 32
Kelvin to Fahrenheit	0 F = 9/5 (K-273)+32
Fahrenheit to celsius	0 C = 5/9 (0 F - 32)
Celsius to Kelvin	K = 0 C + 273
Kelvin to Celsius	0 C = K - 273
Fahrenheit to Kelvin	K = 5/9 (0 F - 32)+ 273