This document provides conversion factors for various units of measurement in the categories of length, area, volume, mass, velocity, density, force, energy, power, and pressure. Some examples of conversions included are: - 1 kilometer = 1000 meters - 1 liter = 1000 cubic centimeters - 1 kilogram = 2.2046 pounds - 1 joule = 1 newton meter = 0.7376 pound-feet - 1 watt = 1 joule per second = 0.2389 calories per second

1. Factores de Conversión
Longitud
1 kilómetro (km) = 1000 metros (m)
1 metro (m) = 100 centímetros (cm)
1 centímetro (cm) = 10-2m
1 milímetro (mm) = 10-3 m
1 micra ( ) = 10-3 mm
1 milimicra (m  ) = 10-9 m
1 angstrom (A) = 10 -10 m
1 pulgada (pulg) = 2.540 cm
1 pie = 30.48 cm
1 milla (mi) = 1.609 km
1 mil = 10-3 pulg
1 centímetro = 0.3937 pulg
1 metro = 39.37 pulg
1 kilómetro = 0.6214 milla
Área
1 metro cuadrado (m2) = 10.76 pie2
1 Pie cuadrado (pie2) = 929 cm2
1 millo cuadrado (mi2) = 640 acres
1 acre = 43560 pies2

2. Volumen
1 litro (l) = 1000 cm3 = 1,057 cuartillos (qt) = 61.02 pulg3= 0.03532 pie3
1 metro cúbico (m3) = 1000 l = 35.32 pies3
1 pie cúbico (pie3) = 7.481 galones (E.E. U.U.) = 0.02832 m3 = 28.32 I
1 galón (E.E. U.U.) = 231 pulg3= 3.785 I
1 galón británico= 1.201 galones (E.E. U.U.) = 227.4 pulg3
Masa
1 kilogramo (kg) = 2.2046 lb = 0.06852 slug
1 gramo (gm) = 10 -3 kg
1 libra (lb) = 453.6 gm = 0.03108 slug
1 slug = 32.174 lb = 14.59 kg
Velocidad
1 km/hr = 0.2778 m/seg = 0.6214 mi/hr = 0.9113 pies/seg
1 mi/hr = 1.467 pies/seg = 1.609 km/hr = 0.4470 m/seg
Densidad
1 gm/cm3 = 103 kg/m3= 62.43 Ib/pie3 = 1.940 slug/pie3
1 lb/pie3 = 0.01602 gm/cm3
1 slug/pie3 = 0.5154 gm/cm3

3. Fuerza
1 newton (N) = 105 dinas= 0.1020 kgf= 0.2248 lbf
1 1ibra fuerza (Ibf) = 4.448 N = 0.4536 kgf = 32.17 poundals
1 kilogramo fuerza (kgf) = 2.205 lbf = 9.807 N
1 tonelada (E.E. U.U.) = 2000 lbf;
1 tonelada grande = 2240 lbf;
1 tonelada métrica = 2205 lbf
Energía
1 joule (J) = 1 N m = 107 ergios = 0.7376 pie lbf = 0.2389 cal = 9.481 X 10 -4 Btu
1 pie lbf = 1.356 J = 0.3239 cal = 1.285 X 10-3 Btu
1 caloría (cal) = 4.186 joule = 3.087 pie lbf = 3.968 x 10-3 Btu
1 Btu (unidad térmica británica) = 778 pie lbf = 1055 J = 0.293 W hr
1 kilowatt hora (kW hr) = 3.60 x 106 J = 860 kcal = 3413 Btu
1 electrón voltio (ev) = 1.602 x 10-9 J
Potencia
1 watt (W) = 1 J/seg = 107 ergios/seg = 0.2389 cal/seg
1 caballo de fuerza (hp) = 550 pie lbf/seg = 33000 pie lbf/min = 745.7 W
1 kilowatt (kW) = 1.341 hp = 737.6 pie lbf/seg =0.9483 Btu/seg

4. Presión
1 nt / m2 = 10 dinas /cm2 = 9.869 x 10-8 atmósfera = 2.089 x 10-2 lbf/ pie2
1 lbf/pulg2 =6895 N/m2 =5.171 cm de mercurio = 27.68 pulg agua
1 atmósfera (atm) = 1.013 x 105 N/m2 = 1.013 x 108 dinas/cm2=14.70 Ibf/pulg2 =
76 cm de mercurio = 406.8 pulg agua