Conversión de Unidades de Medida - Measures Conversion Factors                                
 Unidades de Medidas Lineales (Linear Measure)
1 milla (mile) 5280 pies (feet)
1 milla (mile) 1.60935 km
1 km 3280.83 pies (feet)
1 km 0.621 millas (miles)
1 km 1000 m (meters)
1 m 39.37 inches
1 m 3.281 pies (feet)
1 m 100 cm
1 cm 10 mm (millimeter)
1 cm 0.394 pulgadas (inches)
1 mm 1000  m -micrones- (microns)
1 m 1000 nm 
1 pie (foot) 30.48 cm
1 pulgada (inch) 25.4 mm
1 pulgada (inch) 1000 mils
1 mil 25.4 microns
1 m (micron) 0.3937 mils
1 yard 36 inches




Unidades de Volumen (Volume)      
1 yarda cúbica (cubic yard) 27 pies cúbicos (cubic feet)
1 pulgada cúbica (cubic inch) 16.38716 cm3 (cubic centimeters)
1 m3 (cubic meter) 1.307943 yardas cúbicas (cubic yards)
1 US gallon 3.7853  l (litres)
1 US gallon 128 onzas líquidas (fluid ounces)
1 US gallon 0.8327 Imperial gallons
1  l (litres) 61.025 pulgada cúbica (cubic inches)
1  l (litres) 1000 cm3 (cubic centimeters)
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pm = picometro (picometer) = 10-12m
nm = nanometro (nanometer) = 10-9m
mm = micrometro (microns)=10-6m
mm = milímetro (millimeters) = 10-3m
cm = centímetro (centimeter) = 0.01 m
dm = decímetro = 0.1 m
m  = metro (meter)
dcm = decámetro = 10 m
hm = hectómetro = 100 m 
km = kilómetro (kilometer) = 1000 m
 Prefijos (Prefixes) 
pico (p)        = 1/1.000.000.000.000
nano (n)       = 1/1.000.000.000
micro(
m)       = 1/1.000.000
mili (milli)(m) = 1/1.000
kilo (k) = 1.000
mega (M) = 1.000.000

giga (G) = 1.000.000.000
tera (T) = 1.000.000.000.000
oz = onza (ounces)
kg = kilogram
= pulgada (inch)


 dB (decibel)                            
N [dB] = 10 log

Pout


P
in

 dBm (decibel milliwatt)                

P [dBm] = 10 log

P [mw]


1 mw


Unidades de Peso (Weight)  
1 libra (pound) 16 onzas (ounces)
1 libra (pound) 453.592 g (grams)
1 kg 2.20462 libras (pounds)
1 kg 1000 g (grams)
1 tonelada (ton) 2000 libras (pounds)
1 tonelada (ton) 907.185 kg
1 metric ton 2205 libras (pounds)
1 kintal 0.1 toneladas (tons)

Unidades de Presión (Pressure)
1 Bar 1 kg/cm2 
1kg/cm2   100 kPa
1 psi 1 libra/pulgada2 (pounds/square inch)
1 atmósfera (atmosphere) 14.6 libra/pulg2  (pounds/square inch)
1 psi 6.895 kPa
 
 Miscelánea (Miscellaneous)
1 Ha (hectárea) 10.000 m2 
oF (degrees Fahrenheit)  ( 9/5 x oC ) + 32
oC (degrade Celsius) 5/9 x ( oF - 32 )
1 vatio/hora (watt/hour) 3.415 Btu
1 HP (horsepower) 746 w (vatios) (watts)
1 Nm (Newton metro) 1.3558 ft-lbs
1 ft-lb 0.7376 Nm (Newton metro)

 dBr (relative)                                

P [dBm] = 10 log

P [mw]


P ref


 dBmV (decibel millivolt)                 

U[dBmV] = 20 log

U[mV]


1 m
V