Spike's Calculators

Calculate the amount of water an area of one hectare will receive from a rainfall amount measured in millimetres.

Includes conversions to various other measurements.

- rainfall amounts measured in millimetres per hectare

- cubic inches of water
- cubic feet of water
- cubic metres of water
- litres of water
- US gallons of water
- Imperial gallons of water
- weight in short tons
- weight in long tons
- weight in metric tons

- 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