Water Demand Calculator
Estimate daily demand, peak demand, diversity effect, and storage requirement.
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Plumbing MEP Tools
Water demand, tanks, pumps, pump horsepower, water pipe pressure drop, drainage sizing, drainage slope, hot water demand, and domestic water planning tools.
Plumbing & Drainage
Domestic water, drainage, pump head, tank, and hot-water planning tools.
Pump Head Calculator
Calculate static head, pressure head, friction loss, velocity, and total dynamic head.
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Drainage Pipe Sizing Assistant
Estimate drainage fixture units, pipe size guidance, and slope warning.
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Water Tank Capacity Planner
Calculate domestic tank volume, fire reserve separation, usable volume, and refill rate.
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Hot Water Demand Calculator
Estimate hot water storage, heating energy, recovery rate, and heater capacity.
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Water Pipe Pressure Drop Calculator
Estimate water pipe velocity, friction head, and pressure drop.
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Drainage Slope Calculator
Calculate pipe fall, slope percentage, and invert level difference.
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Pump Horsepower Calculator
Estimate pump power from flow, total dynamic head, efficiency, and motor margin.
Open ToolPlumbing planning notes
These tools are intended for planning, estimation support, technical checking, and preliminary decision-making. They do not replace authority-approved calculations, engineering judgement, manufacturer data, or project-specific specifications.
How to use this page
Plumbing tools focus on domestic water, storage, pump head, drainage, and hot water demand. These calculators help users compare options and prepare early design notes without installing software. For construction use, verify all assumptions against fixture counts, authority rules, pipe materials, pressure requirements, and project specifications.