Conversion factors
  • Force
    • 1 pound = 4.4482 Newtons
  • Length
    • 1 Foot = 0.3048 meters
  • Velocity
    • 1 mile/hour = 0.4470 meters/second
    • 1 mile/hour = 1.4667 feet/second
    • 1 mile/hour =1.6093 kilometers/hour
  • Volume
    • 1 gallon [US, liquid] = 3.7854 liters
    • 1 gallon [US, liquid] = 0.0037854 cubic meters
    • 1 gallon [US, liquid] = 231 cubic inches
    • 1 cubic foot =0.02832 cubic meters
    • 1 cubic inch =0.00001638 cubic meters
  • Power
    • 1 watt (joules/sec) = 3.4144 BTU/hour
    • 1 watt (joules/sec) = 0.001341 horsepower
  • Energy
    • 1 joule = 0.7376 foot pound
    • 1 kilowatt hour = 3,600,000 joule
  • Density
    • 1 kg/cubic meter = 0.062428 lbm/cubic foot
  • Pressure
    • 1 Pascal (newton/sq m) = 0.000145 lbf/square inch (PSI)
  • Area
    • 1 hectare = 2.471054 acre
  • Constants
    • 1 gallon of auto gasoline = 36.6 kilowatt hour
    • 1 lbf/square inch (PSI) = 27.707591 inch H2O (60 F)
    • 1 gallon of water = 62.3707 lbf/cubic ft