Spike's Calculators

Calculating the water flow from a tap is a fairly simple process and requires a container and timer.

Open the tap full blast, place the container underneath the flow and time the amount of time it takes, in seconds, to fill the container.

**Example:** 5 litre bucket takes 15 seconds to fill

5 litres --- 15 seconds = 5 / 15 * 60 = 20 litres per minute average flow rate

Alternately you can take a certain amount of time and then measure the amount of water in the container.

**Example:** 5-litre container placed under the water flow (full blast) for 10 seconds remove the container and then measure the amount of water in the bucket. If in 10 seconds you have 3.4 litres of water enter 3.4 under container size and 10 seconds in the time it takes to fill the container.

3.4 litres ---10 seconds = 3.4 / 10 * 60 = 20.4 litres per minute average flow rate

To get a more accurate result all other water sources in the house should be turned off.

- enter the size of your container (in litres)
- the time it takes to fill the container in (seconds)

- flow rate in litres per minute
- flow rate in litres per hour

- Capacity of a Round Cistern - Imperial measurements
- Capacity of a Round Cistern - Metric measurements
- Capacity of a Square or Rectangular Shaped Cistern - Imperial measurements
- Capacity of a Square or Rectangular Shaped Cistern - Metric measurements
- Collecting Rain Water from a Catchment Area/ Inch per Square Foot
- Rainfall per Unit Area, Inch per Acre
- Rainfall per Unit Area, Millimetres per Acre
- Rainfall per Unit Area, Millimetres per Hectare

- Garden Hose Flow Calculator
- Measuring the Water Flow from a Tap in Gallons per Minute
- Measuring the Water Flow from a Tap in Litres per Minute
- Water Application Rate for an Area

- Pressure Loss in Pipes from Friction
- Valves and Fittings 1/2" to 24" diameter, equivalent length calculation