acre(ac or A)	Area		4046.86	m2	40468600	cm2
ampere_hour(A h)	Electric_charge		3600.0	coulomb (C)	3600.0	sec A
are (a)	Area		100.0	m2	1000000	cm2
atmosphere(atm)	Pressure	101325	 101325	kg/m*sec2 (PA)	1013250	g/cm*sec2
barrel_dry(bbl)	Volume	7056*I3	0.115627	m3	115627	cm3
barrel_fluid(bbl)	Volume	31.5*gallon	0.11924	m3	119240	cm3
barrel_oil(bo)	Volume	42*gallon	0.158987	m3	158987	cm3
bi_weeks_per_year (bwpy)	Time_interval_units		26.1	units	26.1	units
biweek_payroll (bwp)	Time_interval	10*day_payroll	288000.0	sec	288000.0	sec
british_thermal_unit (btu)	Energy		1054.8	m2*kg/sec2(Joule)	1.0548E+10	cm2*g/sec2
bushel_dry(bu)	Volume		0.0352381	m3	35238.1	cm3
caliber(cal)	Distance_Length	0.01*inch	0.000254	m	0.0254	cm
calorie(cal)	Energy		4.1868	m2*kg/sec2(Joule)	4.1868E+7	cm2*g/sec2
carat(ct)	Mass_Weight	2E-4	0.0002	kg	0.2	g
centimeter (cm)	Distance_Length	.01	0.01	m	1	cm
centimeter_mercury(cmHg)	Pressure	atmosphere/76	1333.0	kg/m*sec2 (PA)	13330.0	g/cm*sec2
chain (ch)	Distance_Length	792*inch	20.1168	m	2011.68	cm
cubic_centimeter (cm3)	Volume	cm*cm*cm	1.0E-6	m3	1	cm3
cubic_foot (f3)	Volume	f*f*f	0.0283168	m3	28316.8	cm3
cubic_kilometer (km3)	Volume	km*km*km	1.0E+9	m3	1.0E+15	cm3
cubic_millimeter (mm3)	Volume	mm*mm*mm	1.0E-9	m3	1.0E-3	cm3
cup(c)	Volume	8*ounce_fluid	0.000236587	m3	236.587	cm3
day(d)	Time_interval	24*hour	86400.0	sec	86400.0	sec
day_payroll(da)	Time_interval	8*hour	28800.0	sec	28800.0	sec
decimeter (dm)	Distance_Length	.1	0.1	m	10	cm
degree_angular(? or deg)	Angle	quadrant/90	0.0174533	radian	0.0174533	radian
dollar1970	Money	4.41799*current_$	4.41799	U.S. Dollar	0.2645503	Dollar1914
dollar1971	Money	4.19598*current_$	4.19598	U.S. Dollar	0.2512563	Dollar1914
dollar1972	Money	4.06326*current_$	4.06326	U.S. Dollar	0.243309	Dollar1914
dollar1973	Money	3.92019*current_$	3.92019	U.S. Dollar	0.2347419	Dollar1914
dollar1974	Money	3.58369*current_$	3.58369	U.S. Dollar	0.2145922	Dollar1914
dollar1975	Money	3.20537*current_$	3.20537	U.S. Dollar	0.1919383	Dollar1914
dollar1976	Money	3.00360*current_$	3.0036	U.S. Dollar	0.1798563	Dollar1914
dollar1977	Money	2.85470*current_$	2.8547	U.S. Dollar	0.1709401	Dollar1914
dollar1978	Money	2.67200*current_$	2.672	U.S. Dollar	0.16	Dollar1914
dollar1979	Money	2.44510*current_$	2.4451	U.S. Dollar	0.1464132	Dollar1914
dollar1980	Money	2.14653*current_$	2.14653	U.S. Dollar	0.1285347	Dollar1914
dollar1981	Money	1.91954*current_$	1.91954	U.S. Dollar	0.1149425	Dollar1914
dollar1982	Money	1.77094*current_$	1.77094	U.S. Dollar	0.1060443	Dollar1914
dollar1983	Money	1.70757*current_$	1.70757	U.S. Dollar	0.1022497	Dollar1914
dollar1984	Money	1.63886*current_$	1.63886	U.S. Dollar	9.813532E-02	Dollar1914
dollar1985	Money	1.58294*current_$	1.58294	U.S. Dollar	9.478682E-02	Dollar1914
dollar1986	Money	1.52372*current_$	1.52372	U.S. Dollar	9.124072E-02	Dollar1914
dollar1987	Money	1.50180*current_$	1.5018	U.S. Dollar	8.992814E-02	Dollar1914
dollar1988	Money	1.44339*current_$	1.44339	U.S. Dollar	8.643053E-02	Dollar1914
dollar1989	Money	1.37903*current_$	1.37903	U.S. Dollar	8.257664E-02	Dollar1914
dollar1990	Money	1.31083*current_$	1.31083	U.S. Dollar	7.849281E-02	Dollar1914
dollar1991	Money	1.24071*current_$	1.24071	U.S. Dollar	7.429401E-02	Dollar1914
dollar1992	Money	1.20927*current_$	1.20927	U.S. Dollar	7.241137E-02	Dollar1914
dollar1993	Money	1.17111*current_$	1.17111	U.S. Dollar	7.012635E-02	Dollar1914
dollar1994	Money	1.14227*current_$	1.14227	U.S. Dollar	0.0683994	Dollar1914
dollar1995	Money	1.11111*current_$	1.11111	U.S. Dollar	6.653353E-02	Dollar1914
dollar1996	Money	1.08161*current_$	1.08161	U.S. Dollar	6.476706E-02	Dollar1914
dollar1997	Money	1.04965*current_$	1.04965	U.S. Dollar	6.285328E-02	Dollar1914
dollar1998	Money	1.03342*current_$	1.03342	U.S. Dollar	6.188143E-02	Dollar1914
dollar1999	Money	1.01643*current_$	1.01643	U.S. Dollar	6.086407E-02	Dollar1914
dram_apothecaries_US(dr)	Mass_Weight	ounce_fluid/8	3.69668E-6	kg	3.69668E-3	g
dram_fluid(dr)	Volume	ounce_fluid/8	3.69668E-6	m3	3.69668	cm3
dram_troy(dr)	Mass_Weight	ounce_troy/8	0.00388794	kg	3.88794	g
drop(gtt)	Volume	tsp/60	8.33333E-8	m3	0.0833333	cm3
em=pica(pi)	Distance_Length	12*point	0.00423333	m	0.423333	cm
faraday_c(Farad)	Electric_charge	26.8*ampere_hour	96480.0	sec4*A2/m2*kg	9.648E-7	sec4*A2/cm2*g
foot(ft or ')	Distance_Length	.3048	0.3048	m	30.480	cm
furlong(fur)	Distance_Length	mi/8	201.0	m	20100.0	cm
gallon (gal)	Volume		0.0037854	m3	3785.4	cm3
grain(gr)	Mass_Weight	648E-7	6.48E-5	kg	0.0648	g
gram (g)	Mass_Weight	.001	0.001	kg	1	g
hectare (ha)	Area	10000	10000	m2	1.0E+8	cm2
horsepower_US(CV)	Power		735.7	m2*kg/sec3(Watt)	7.357E+9	cm2*g/sec3
hour(hr)	Time_interval		3600.0	sec	3600.0	sec
hourly_pay(hp)	Finance	1/261/8	4.78927E-4	$/sec	4.78927E-4	$/sec
inch (in or ")	Distance_Length	.0254	0.0254	m	2.54	cm
inch_cubic(in3 or cu in)	Volume	inch*inch*inch	1.63871E-5	m3	16.3871	cm3
inch_mercury(in Hg)	Pressure	.03342*atmosphere	3386.28	kg/m*sec2 (PA)	33862.8	g/cm*sec2
inch_of_water(in WC)	Pressure	.07355*inch_mercury	249.061	kg/m*sec2 (PA)	2490.61	g/cm*sec2
karat_gold(kt)	Percentage	1/24	0.0416667	1	4.16667	%
kilogram (kg)	Mass_Weight	1	1	kg	1000	g
kilometer (km)	Distance_Length	1000	1000	m	100000	cm
kilometer_per_hour (km/h)	Speed		0.277778	m/sec	27.7778	cm/sec
kilowatt_hour(kW?h)	Energy	3.6E+6	3600000.0	m2*kg/sec3(Watt)	3.6E+13	cm2*g/sec3
knot(kn or kt)	Speed	nautical_mile/hour	0.514444	m/sec	51.4444	cm/sec
light_year(ly)	Distance_Length		9.46091E+15	m	9.46091E+17	cm
liter (lt)	Volume		0.001	m3	1000.0	cm3
lumen(lm)(SI)	Luminous_intensity		0.001496	W	14960	sm2*g/sec3
lux(lx)(SI)	Illumination	lumen/square_foot	0.0161028	W/m2	16.1028	g/sec3
mach (ma)	Speed		331.0	m/sec	33100.0	cm/sec
meter (m)	Distance_Length		1.0	m	100.0	cm
micron (?)	Distance_Length	1E-6	1.0E-6	m	1.0E-4	cm
mile (mi)	Distance_Length	1609.3	1609.3	m	160930.0	cm
mile_per_hour (mph)	Speed	mile/hour	0.447028	m/sec	44.7028	cm/sec
milligram (mg)	Mass_Weight	1E-6	1.0E-6	kg	1.0E-3	g
millimeter (mm)	Distance_Length	.001	0.001	m	0.1	cm
month(mo or mon)	Time_interval	year/12	2629743.0	sec	2629743.0	sec
nanometer (nm)	Distance_Length	1E-9	1.0E-9	m	1.0E-7	cm
nautical_mile (nmi or NM)	Distance_Length		1852.0	m	185200.0	cm
ounce (oz)	Mass_Weight		0.0283495	kg	28.3495	g
ounce_apothecaries(oz)	Mass_Weight		0.03083	kg	30.83	g
ounce_fluid (floz)	Volume	gal/4/32	2.95734E-5	m3	29.5734	cm3
ounce_troy (troz)	Mass_Weight		0.0311035	kg	31.1035	g
parsec(pc)	Distance_Length	3.084E+15	3.084E+15	m	3.084E+17	cm
peck_US(pk)	Volume	8*quart_dry	0.00880969	m3	8809.69	cm3
pennyweight(dwt or pwt)	Mass_Weight	ounce_troy/20	0.00155518	kg	1.55518	g
percent (% or pct)	Percentage	.01	0.01	1	1	%
pint(pt)	Volume	4732E-7	0.0004732	m3	473.2	cm3
pint_dry(pt)	Volume	5506E-7	0.0005506	m3	550.6	cm3
point(pt)	Distance_Length	inch/72	 0.000352778	m	0.0352778	cm
pound (lb or #)	Mass_Weight	16*oz	0.453592	kg	453.592	g
proof (prf)	Percentage	percent*2	0.02	1	2	%
quadrant(quad)	Angle	3.14159265/2	1.5708	radian	1.5708	radian
quart_dry(qt)	Volume	67.2*i3	0.00110121	m3	1101.21	cm3
quart_fluid(qt)	Volume	gallon/4	0.00094635	m3	946.35	cm3
revolution(r.)	Angle	360*degree_angular	6.28319	radian	6.28319	radian
sheet	Mass_Weight	pound/700	0.000647989	kg	0.647989	g
square_centimeter (cm2)	Area	cm*cm	0.0001	m2	1	cm2
square_foot (f2)	Area	f*f	0.092903	m2	929.030	cm2
square_inch (in2)	Area		0.00064516	m2	6.4516	cm2
square_kilometer (km2)	Area	km*km	1.0E+6	m2	1.0E+10	cm2
square_mile (mi2 or sq mi)	Area	mi*mi	 2589846	m2	25898460000	cm2
square_millimeter (mm2)	Area	mm*mm	1.0E-6	m2	1.0E-2	cm2
square_yard (y2)	Area	.8361	0.8361	m2	8361.0	cm2
tablespoonful (tbsp)	Volume	.015*liter	1.5E-5	m3	15	cm3
teaspoonful (tsp)	Volume	liter/200	5E-6	m3	5.0	cm3
ton_long(t or tn)	Mass_Weight	1016	1016.0	kg	1016000.0	g
ton_metric (t or tn)	Mass_Weight	1000	1000	kg	1000000	g
ton_short (t)	Mass_Weight	907.2	907.2	kg	907200.0	g
yard (yd)	Distance_Length	.9144	0.9144	m	91.44	cm
year(a or y or yr)	Time_interval	365.2422*day	3.15569E+7	sec	3.15569E+7	sec
year_payroll (yp)	Time_interval	261*day_payroll	7516800.0	sec	7516800.0	sec
year_payroll_academic (ypa)	Time_interval	195*day_payroll	5616000.0	sec	5616000.0	sec
year_short (ye)	Time_interval	365*day	31536000.0	sec	31536000.0	sec