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Central Bureau of Weights and Measures

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ชั่งตวงวัด

MIT CALIBRATION SERVICE

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METRIC CONVERSION CHART
To Convert U.S. System to Metric System					To Convert Metric System to U.S. System
Length
mil	to	millimeter	multiply by	0.0254	millimeter	to	mil	multiply by	39.37
inch	to	millimeter	multiply by	25.4	millimeter	to	inch	multiply by	0.0394
inch	to	centimeter	multiply by	2.54	centimeter	to	inch	multiply by	0.3937
foot	to	centimeter	multiply by	30.48	centimeter	to	foot	multiply by	0.0328
foot	to	meter	multiply by	0.3048	meter	to	foot	multiply by	3.2808
yard	to	meter	multiply by	0.9144	meter	to	yard	multiply by	1.0936
Area
inch2	to	millimeter2	multiply by	645.16	millimeter2	to	inch2	multiply by	0.0016
inch2	to	centimeter2	multiply by	6.4516	centimeter2	to	inch2	multiply by	0.155
foot2	to	centimeter2	multiply by	929.03	centimeter2	to	foot2	multiply by	0.0011
foot2	to	meter2	multiply by	0.0929	meter2	to	foot2	multiply by	10.7639
yard2	to	meter2	multiply by	0.8361	meter2	to	yard2	multiply by	1.196
Volume, Capacity
inch3	to	centimeter3	multiply by	16.3871	centimeter3	to	inch3	multiply by	0.061
fluid ounce	to	centimeter3	multiply by	29.5735	centimeter3	to	fluid ounce	multiplly by	0.0338
quart (liquid)	to	decimeter3 (liter)	multiply by	0.9464	decimeter3 (liter)	to	quart (liquid)	multiply by	1.0567
gallon (U.S.)	to	decimeter3 (liter)	multiply by	3.7854	decimeter3 (liter)	to	gallon (U.S.)	multiply by	0.2642
gallon (U.S.)	to	meter3	multiply by	0.0038	meter3	to	gallon (U.S.)	multiply by	264.17
foot3	to	decimeter3	multiply by	28.3169	decimeter3	to	foot3	multiply by	0.0353
foot3	to	meter3	multiply by	0.0283	meter3	to	foot3	multiply by	35.3147
yard3	to	meter3	multiply by	0.7646	meter3	to	yard3	multiply by	1.3079
in3/lb	to	m3/kg	multiply by	0.000036	m3/kg	to	in3/lb	multiply by	27,680
ft3/lb	to	m3/kg	multiply by	0.0624	m3/kg	to	ft3/lb	multiply by	16.018
Mass
ounce(avdp.)	to	gram	multiply by	28.3495	gram	to	ounce (avdp.)	multiply by	0.03527
pound	to	gram	multiply by	453.5924	gram	to	pound	multiply by	0.0022
pound	to	kilogram	multiply by	0.4536	kilogram	to	pound	multiply by	2.2046
pound	to	metric ton	multiply by	0.00045	metric ton	to	pound	multiply by	2204.6
U.S. ton (short)	to	metric ton	multiply by	0.9072	metric ton	to	U.S. ton (short)	multiply by	1.1023
Force
lbf	to	N	multiply by	4.448	N	to	lbf	multiply by	0.225
Density
lb/in3	to	kg/m3	multiply by	27.68	kg/m3	to	lb/in3	multiply by	0.000036
lb/ft3	to	g/cm3	multiply by	0.016	g/cm3	to	lb/ft3	multiply by	62.43
lb/ft3	to	kg/m3	multiply by	16.0185	kg/m3	to	lb/ft3	multiply by	0.0624
lb/in3	to	g/cm3	multiply by	27.68	g/cm3	to	lb/in3	multiply by	0.03613
Temperature
in/(in*F)	to	m/(M*C)	multiply by	1.8	m/(M*C)	to	in/(in*F)	multiply by	0.556
F	to	°C	multiply by	(F-32)/(1.8)	°C	to	°F	multiply by	(1.8*C)+32
F	to	K	multiply by	(F+459.67)/(1.8)	K	to	°F	multiply by	(1.8*K)-459.67
Pressure
psi	to	kPa	multiply by	6.8948	kPa	to	psi	multiply by	0.145
psi	to	MPa	multiply by	0.00689	MPa	to	psi	multiply by	145
psi	to	GPa	multiply by	0.00000689	GPa	to	psi	multiply by	145,038
psi	to	bar	multiply by	0.0689	bar	to	psi	multiply by	14.51
Energy and Power
ft * lbf	to	J	multiply by	1.3558	J	to	ft * lbf	multiply by	0.7376
in * lbf	to	J	multiply by	0.113	J	to	in * lbf	multiply by	8.85
ft * lbf/inch	to	J/m	multiply by	53.4	J/m	to	ft * lbf/inch	multiply by	0.0187
ft * lbf/inch	to	J/cm	multiply by	0.534	J/cm	to	ft * lbf/inch	multiply by	1.87
ft * lbf/in2	to	kJ/m2	multiply by	2.103	kJ/m3	to	ft * lbf/in3	multiply by	0.4755
kW	to	metric horsepower	multiply by	1.3596	metric horsepower	to	kW	multiply by	0.7355
U.S. horsepower	to	kW	multiply by	0.7457	kW	to	U.S. horsepower	multiply by	1.3419
Btu	to	J	multiply by	1055.1	J	to	Btu	multiply by	0.00095
Btu	to	W * h	multiply by	0.2931	W * h	to	Btu	multiply by	3.412
Btuin/(hft2*F)	to	W/(m*K)	multiply by	0.1442	W/(m*K)	to	Btuin/(hft2*F)	multiply by	6.933
Btu/lb	to	kJ/kg	multiply by	2.326	kJ/kg	to	Btu/lb	multiply by	0.4299
Btu/(lb*F)	to	J/(kg*C)	multiply by	4187	J/(kg*C)	to	Btu/(lb*F)	multiply by	0.000239
V/mil	to	MV/m	multiply by	0.0394	MV/m	to	V/mil	multiply by	25.4
Output
lb/min	to	g/s	multiply by	7.56	g/s	to	lb/min	multiply by	0.1323
lb/h	to	kg/h	multiply by	0.4536	kg/h	to	lb/h	multiply by	2.2046
Velocity
in/min	to	cm/s	multiply by	0.0423	cm/s	to	in/min	multiply by	23.622
ft/s	to	m/s	multiply by	0.3048	m/s	to	ft/s	multiply by	3.2808
Viscosity
poise	to	Pa*s	multiply by	0.1	Pa*s	to	poise	multiply by	10

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