Time to Fill

The Time to Fill calculator computes the time required to fill a volume of liquid based on the flow or pumping rate.

INSTRUCTIONS: Choose units and enter the following:

• (V) Volume of Liquid (e.g. water)
• (FR) Flow Rate (e.g. 26 gal/min)

Time to Fill (t): The calculator returns the pump time in minutes.  However this can be automatically converted to many compatible units (e.g. seconds, hours, days) via the pull-down menu.

The Math / Science

The formula to compute the time required to pump a volume of liquid is:

T = V/PFR

where:

• T = Time to Pump
• V = Volume of liquid to be pumped
• PFR = Pump Volumetric Flow rate

The issue that most people encounter is with units.  Some pumps are measured in gallons per minute.  Others in gallons per hour, and still others in barrels per day.  This calculator performs automatic unit conversions to provide correct answers in the desired units.

Flow Rates

• 6 gal/min - Common Garden Hose (5/8th inch)
• 3300 gal/hour - Barracuda 1/2 HP Professional Grade Submersible Pump 
• 40 gal/min - Utilitech Plug-in Pool Cover Pump
• 30 gal/min - Utilitech 115-Volt Thermoplastic Submersible Utility Pump
• 42 gal/min - Zoeller 0.33 HP  115-Volt Cast Iron Submersible Sump Pump
• 158 gal/min - Generac 2" Clean Water Pump-HP 120-Volt Aluminum Gas-Powered Utility Pump

Related Calculators

• Fluid Volume by Flow-rate and Time
• Time to Pump Volume by Flow-rate

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• Time to Fill: Computes the amount of time necessary to fill something (e.g., tank or pool) based on the volume and flow rate.
• Pipe Insulation Calc: Computes the number of bags of pipe insulation needed for a run of pipes based on the 12' of length per bag and the length of pipe run to be insulated.