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Wastewater Engineering Conversions

Updated conversion aids

WEGCONVERSIONS

Updated conversion aids

Engineering unit conversion tools

Use these quick conversions for screening calculations. Confirm the unit basis, temperature, density, and project standard before using a result in design documents.

Temperature

°C = (°F − 32) × 5/9

Result: 20.00 °C

Flow: MGD to m³/d

m³/d = MGD × 3,785.4118

Result: 3,785.41 m³/d

Pressure: psi to bar

bar = psi × 0.0689476

Result: 6.89 bar
Reference basis: US gallon = 3.785411784 L; standard pressure conversion uses 1 psi = 0.0689475729 bar. Water-density and mass conversions in the historical table are approximate and should be labeled as such.

Wastewater Engineering Conversions


Temperature Conversion Table


Temperature Conversions between Fahrenheit and Celsius

Method A:
° C = 5/9 (°F - 32)
° F = 9/5 (°C) +32

Method B:
(1) Add 40°
(2) Multiply by the appropriate fraction (5/9 or 9/5)
(3) Subtract 40°


Conversion Table

To Convert Multiply By To Get
Length Feet 12 Inches
Yards 3 Feet
Yards 36 Inches
Meters 3.3 Feet
Meters 100 Centimeters
Meters 1,000 Millimeters
Area Square Yards 9 Square Feet
Square Feet 144 Square Inches
Acres 43,560 Square Feet
Volume Cubic Yards 27 Cubic Feet
Cubic Feet 1,728 Cubic Inches
Cubic Feet (water) 7.48 Gallons
Cubic Feet (water) 62.4 Pounds
Acre-Feet 43,560 Cubic Feet
Gallons (water) 8.34 Pounds
Gallons (water) 3.785 Liters
Gallons (water) 3,785 Milliliters
Gallons (water) 3,785 Cubic Centimeters
Gallons (water) 3,785 Grams
Liters 1,000 Milliliters
Time Days 24 Hours
Days 1,440 Minutes
Days 86,400 Seconds
Flowrate Million Gallons/Day 1,000,000 Gallons/Day
Million Gallons/Day 1.55 Cubic Feet/Second
Million Gallons/Day 3.069 Acre-Feet/Day
Million Gallons/Day 36.8 Acre-Inches/Day
Million Gallons/Day 3,785 Cubic Meters/Day
Gallons/Minute 1,440 Gallons/Day
Gallons/Minute 0.2271 Cubic Meter/Hour
Gallons/Minute 3.785 Liters/Minute
Cubic Meters/Hour 35.317 Cubic Feet/Hour
Cubic Meters/Hour 0.5881 Cubic Feet/Minute
Mass/Weight Pounds 454 Grams
Grams 1,000 Milligrams
Pressure PSI 2.31 Head, ft (water)
Horsepower 33,000 Foot-Pounds/Minute
Horsepower 0.746 Kilowatts
Bar 100,000 Pa
Atm 1.01325 Bar
Bar 10197.2 mmH2O
Bar 750.062 mmHg (or Torr)
kPa 0.001 MPa
kPa 0.0102 kgf/cm2
kPa 102 mmAq
kPa 7.5 mmHg

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