Calculators
Free water calculators
Work out the size of a recharge system, sewage treatment plant or pond before you ask anyone for a quote. Each calculator uses the same method our engineers use.
More calculators
- Calculator
Recharge pit size calculator
Free recharge pit and rainwater harvesting calculator for India: pick your district and roof area to get litres a year, the number and size of recharge pits, bore depth and cost with GST.
- Calculator
STP capacity calculator
Free STP capacity calculator: enter flats, people and water use to get the sewage treatment plant size in KLD, peak flow, reuse water and the usual technology (MBBR, SBR, MBR).
- Calculator
Pond volume and desilting calculator
Free pond volume calculator: enter length, width, depth and side slope to get storage in m³ and litres, the digging volume, yearly inflow from the catchment and evaporation.