Useful Conversion

Useful Conversions

Linear Measure
1 km = 0.6214 mi 1 mi = 1.61 km
1 m = 39.37 mi 1 mi = 1610 m
1 m = 3.28 ft 1 ft = .305 m
1 cm = 0.3937 in 1 in = 2.54 cm
1 mm = .03937 in 1 in = 25.4 mm
Square Measure
1 km = 0.38612 miles 1 mile = 2.59 km²
1 m² = 10.76 ft² 1 ft² = .093 m²
1 cm² = 0.155 in² 1 in² = .65 cm²
1 mm² = 0.00155 in² 1 in² = 845.2 mm²
Liquid Measure
1 litre = 0.22 Imperial Gal. 1 imperial  Gal. = 4.546 litre
1 litre = 0.264 U.S. Gal. 1 U.S. Gal. = 3.79 litre
Weight Measure
1 kg = 2.2 lbs 1 lb = .455 kg
1 kg = 35.274 ozs 1 oz = .028 kg
Force Measure
1 Newton (N) = .225 lbs 1 lb = 4.448 N
1 daN = 2.2 lbs 1 lb = .455 daN
1 Kg Force = 9.8 Newton (N) 1 N = .102 Kg Force
1 Kilopound = 9.5 Newton (N) 1 N = .105 Kilopound
1 Pound/Inch = 175.127 Newton/Metre 1 N/M = .0057 Pound/Inch
1 Pound/Foot  = 14.59 Newton/Metre 1 N/M   .0685 Pound/Foot
Pressure Measure
1 Bar = 14.5 P.S.I. 1 P.S.I. = .0690 Bar
1 Kg/m² = 9.8 Newton/Metre² 1 N/m² = .102 Kg/m²
1 Kg/m² = 9.8 Pascal (Pa) 1 Pa = .102 Kg/m²
1 Kilonewton/Metre = 0.145 P.S.I. 1 P.S.I. = 6.897 lb./ft.
Power Measure
1 BTU/hour = .0293 Watt(W) 1 Watt = 3.413 BTU/hour
Horsepower (550 ft.lbs/s) = .745 Kilowatt 1 KW = 1.342 HP
Temperature Measure
Fahrenheit to Celsius = tc = (tf-32)/1.8      
Celsius to Fahrenheit = tf = (1.8Xtc) + 32      

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