Water Tank Size Calculator
Size your overhead tank from household demand — NBC norms, not guesswork.
WaterOpen Calculator
Water Calculators
Tank sizing, rainwater harvesting and pump capacity.
About our water calculators
Water infrastructure gets designed once and lived with for decades. Undersize the tank and you run dry every summer; oversize it and you pay for dead storage and stagnation. These calculators size storage, harvesting and pumping against real household demand and local rainfall rather than rules of thumb.