LENGTH:	
        1 m  = 3.2808 ft                 1 ft   = 0.3048 m
        1 km = 0.6214 mile               1 mile = 1.6093 km
                                         1 nautical mile = 1.852 km

AREA:
        1 m2 = 10.76 ft2                 1 ft2  = 0.09290 m2
                                         1 acre = 43560 ft2
                                         1 sq. mile = 640 acres

VOLUME:
        1 litre = 1000 cm3
        1 litre = 0.03532 ft3            1 ft3 = 28.32 litres
        1 litre = 61.02 in3              1 US gallon = 231 in3
                                         1 Imperial gallon = 277.42 in3

MASS:
        1 Kg = 0.06852 slug              1 slug = 14.5943 Kg
        1 Kg = 1000 grams                1 lbm  = 0.4536 Kg

DENSITY:
        1 Kg/m3 = 0.0019403 slug/ft3     1 slug/ft3 = 515.38 Kg/m3
        1 Kg/m3 = 0.06243 lbm/ft3        1 lbm/ft3  = 16.018 Kg/m3

VELOCITY:
        1 m/s = 3.2808 ft/s              1 ft/s = 0.3048 m/s
        1 m/s = 2.2369 mph               1 mph  = 0.44704 m/s
        1 m/s = 3.6 km/hr                1 mph  = 1.6093 km/hr
        1 m/s = 1.943 knots              1 knot = 0.5144 m/s

FORCE:
        1 Newton = 0.2248 lbf            1 lbf = 4.448 N
        1 Newton = 105 Dynes

PRESSURE:
        1 mm Hg = 133.32 Pa              1 in Hg  = 3.3865 kPa
        1 Pa = 10-5 Bar                  1 in H2O = 249.1 Pa
        1 Pa = 1.45 x 10-4 lbf/in2       1 lbf/in2 = 6895 Pa    
        1 Pa = 0.02089 lbf/ft2           1 lbf/ft2 = 47.88 Pa   
 
ENERGY:
        1 Joule = 1 Nm = 0.7376 ft lbf   1 ft lbf= 1.35582 J
        1 Joule = 0.0094787 BTU          1 BTU = 1055.06 J
        1 Joule = 0.2389 Cal             1 Cal = 4.1868 J    
        1 Joule = 2.78 x 10-7 kilowatt hrs
        1 kwh   = 3.6 x 106 J

POWER:
        1 Watt = 1 J/s = 0.7376 ft lbf/s
        1 Watt = 1.341 x 10-3 HP         1 HP = 745.6 W   
        1 Watt = 3.4118 BTU/hr           1 HP = 550 ft lbf/s

VISCOSITY:
        1 Poise = 0.1 Kg/m/s             1 Stokes = 10-4 m2/s

ANGLE:
         1 radian = 57.296 deg           1 deg = 0.01745 Rad