Conversion Tables

Length

  To convert from (SI)       Conversion factor     To get U.S. Customary

  Meters (m)                 Multiply by 3.28      Feet (ft)
  Meters                     Multiply by 1.094     Yards
  Meters per second (m/s)    Multiply by 2.237     Miles per hour (mph)
  Centimeters (cm)           Multiply by 0.39      Inches (in)
  Milimeters (mm)            Divide by 25.4        Inches
  Kilometers (km)            Divide by 1.608       Miles (mi)
  m3/(m²-day) =m/day         Multiply by 24.6      gpd/ft²

Area

  To convert from (SI)       Conversion factor     To get U.S. Customary

  cm²                        Divide by 6.45        Square inch
  m²                         Multiply by 10.76     Square foot (ft²)
  Hectare (ha=10 000 m²)     Multiply by 2.46      Acre
  km² (=100 ha=106 m²)       Multiply by 0.387     Square mile

Volume

  To convert from (SI)       Conversion factor     To get U.S. Customary

  Liters (=1 dm³)            Divide by 28.3        Cubic foot (ft³)
  m³                         Multiply by 35.4      ft³
  Liters                     Divide by 3.78        U.S. gal
  Liters                     Divide by 4.54        Imp. gal
  Liters/(s-ha)              Multiply by 0.014     Inches/hour
  m³                         Divide by 3780        Million U.S. gal (mg)
  m³                         Multiply by 8.54      Barrel
  m³                         Divide by 1 230       Acre-ft
  Liters/s                   Divide by 43.75       Million gal/day (mgd)
  Liters/s                   Multiply by 15.87     gal/min (gpm)
  Liters/m²                  Divide by 40.76       gal/ft²

Mass

  To convert from (SI)       Conversion factor     To get U.S. Customary

  Gram (g)                   Divide by 454         Pounds (lb)
  Gram                       Multiply by 15.43     Grain
  Kilogram(kg=1000 g)        Multiply by 2.2       Pounds
  Newton (=0.1 kgb)          Multiply by 0.225     Pounds
  Metric ton (=1000 kg)      Multiply by 1.1       U.S. ton
  Metric ton                 Multiply by 0.98      English ton

Concentration

  To convert from (SI)       Conversion factor     To get U.S. Customary

  Milligram per liter        Multiply by 1.0       Parts per million (ppm)
  (mg/liter=g/m³)	
  mg/liter                   Divide by 2.29        Grain/ft³
  Microgram per liter        Multiply by 1.0       Parts per billion (ppb)
  (ug/liter=10-3 g/m³)

Density

  To convert from (SI)       Conversion factor      To get U.S. Customary

  kg/m³                      Divide by 16            lb/ft³
  g/m³                       Multiply by 6.24x10-5   lb/ft³
  m³/kg                      Multiply by 16.03       ft³/lb

Pressure

  To convert from (SI)       Conversion factor      To get U.S. Customary

  g/m²                       Divide by 4 885        lb/ft²
  Bar (=105 N/m²)            Multiply by 14.2       psi (=lb/in.²)
  kg/m²                      Divide by 4.89         lb/ft²
  kg/cm²                     Multiply by 14.49      psi

Energy

  To convert from (SI)       Conversion factor      To get U.S. Customary

  Watt (W=N x m/s)           Multiply by 3.41       Btu/hr
  Kilowatts (kW=1000 W)      Multiply by 1.34       Horsepower (hp)
  Kilowatt-hours (kW-hr)     Multiply by 3 409.5    Btu
  W/m3                       Multiply by 5          hp/mg
  kW-hr/(m²x°C)              Multiply by 176        Btu/ft²/°F
  kW-hr/(m³x°C)              Multiply by 53.6       Btu/ft³/°F
  Calories (gram)            Divide by 252          Btu
  1 calorie = 1.16 x 10-6 kW-hr	
  Degree celsius (°C)        Multiply oC by 1.8     Degrees Fahrenheit (°F) 
                             and add 32

Some constants

  1 m3 of water weighs 1 000 kg.
  1 ft3 of water weighs 62.4 lb.
  1 U.S. gal of water weighs 8.34 lb.
  1 Imp. (English) gal of water weighs 10 lb.
  1 day has 1 440 minutes and 86 400 seconds.

a - Metric kilograms in this table are weight kilograms which equal 9.81 (m/s2) x kg (mass) = 9.81 Newtons.

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N1H 4E9
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info@computationalhydraulics.com