This calculator determines how much pressure (measured in "feet of head") is lost as water travels through a pipe. Smoother pipes like PEX have less friction than rougher pipes like old cast iron. This tool is essential for sizing pumps and ensuring you have adequate water pressure at the fixture.
This powerful tool calculates the actual Gallons Per Minute (GPM) you can expect at the end of a pipe, taking into account your starting pressure, pipe length, diameter, and any change in elevation. It then uses that flow rate to instantly tell you how long it would take to fill a specific volume, like a 5-gallon bucket or a 20-liter container.
If you already know your flow rate in Gallons Per Minute (GPM), this simple calculator will tell you exactly how long it will take to fill any volume, such as a bucket, a pool, or a tank. The "Show Steps" feature provides the answer in both minutes and seconds.