Calculators are located by category at these links. Add this site to your home screen to be able to quickly access these calculators.

Enter a value into any one of the cells, press the calculate button, and see the results in the other cells. Press the clear button to clear the values from the prior calculation.

Equivalent Flow Rates Calculator

Equivalent Flow Rates Calculator

Equivalent Volume Calculator

Equivalent Volume Calculator

Pipe Flow and Sizing

Enter values or adjust default values in the white input cells. Press the calculate button and see the results in the blue output cells. The clear button will delete the displayed prior results.

Pipe Flow Velocity and Headloss Calculator

Pipe Flow Velocity and Headloss Calculator

Velocity, feet per second

Headloss, feet per 1,000 feet

Headloss, psi per 1,000 feet

Pipe Size Calculator

Pipe Size Calculator

Minimum pipe size based on maximum day flow, inches

Minimum pipe size based on peak hour flow, inches

Minimum pipe size based on maximum day plus fire flow, inches

Minimum pipe size based on headloss, inches

Storage Capacity

Enter values or adjust default values in the white input cells. Press the calculate button and see the results in the blue output cells.

Water Storage Tank Sizing Calculator

Water Storage Tank Sizing Calculator

Equalization volume, million gallons

Fire flow volume, million gallons

Emergency volume, million gallons

Total volume, million gallons

Pump station capacity for peak hour demand, gallons per minute

Pump station capacity for fire flow, gallons per minute

Pumping and Power

Enter values or adjust default values in the white input cells. Press the calculate button and see the results in the blue output cells.

Well Pumping Power Cost Calculator

Well Pumping Power Cost Calculator

Total head, ft

Horsepower

Kilowatts

Annual kilowatt-hours

Annual cost of power, dollars

Water pumped, ac-ft/yr

Unit cost of power, $/ac-ft

Imperial to Metric Conversions

Enter a value into any one of the cells, press the calculate button, and see the results in the other cells. Press the clear button to clear the values from the prior calculation.

Pressure Conversion Calculator

Pressure Conversion Calculator

Velocity Conversion Calculator

Velocity Conversion Calculator

About

This website provides water works calculators for water utility professionals. It is a convenient location to quickly perform common water system engineering calculations and conversions.

Created by Paul Selsky, PE