Cooling Load Estimator
Estimate cooling load, equipment tonnage, ventilation impact, and safety margin.
Open ToolStandards-Based MEP Calculators
MEP calculators with planning profiles and warnings for standards-led design review and early coordination.
Duct Sizing & Velocity Checker
Check duct velocity, equivalent diameter, airflow density, and noise-risk level.
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Airflow & CFM Calculator
Compare airflow by ACH, occupancy, cooling tons, and design margin.
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Exhaust Fan Sizing Calculator
Estimate exhaust fan capacity from room volume, ACH, equipment count, and margin.
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Sprinkler Density & Coverage Planner
Estimate sprinkler count, design flow, coverage, and water demand.
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Fire Pump Sizing Calculator
Estimate fire pump flow, head, jockey pump range, and pressure margin.
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Fire Hose Reel / Hydrant Demand Tool
Calculate simultaneous hose reel and hydrant flow with duration and water volume.
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Fire Water Tank Capacity Calculator
Estimate gross tank size from fire demand, duration, usable volume, and refill allowance.
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FM200 / Clean Agent Quantity Estimator
Estimate clean agent quantity, cylinder count, and room-volume sensitivity.
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Cable Sizing & Voltage Drop Planner
Check current, selected cable ampacity, voltage drop, and minimum cable guidance.
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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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Conduit Fill Calculator
Calculate conduit fill percentage for cable and raceway planning.
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Water Pipe Pressure Drop Calculator
Estimate water pipe velocity, friction head, and pressure drop.
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Breaker Size Calculator
Estimate breaker rating from load current, voltage, phase, and safety margin.
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Ampacity Derating Calculator
Estimate derated cable ampacity from temperature, grouping, and installation factors.
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Drainage Slope Calculator
Calculate pipe fall, slope percentage, and invert level difference.
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TR to CFM Calculator
Convert cooling tons to supply airflow using CFM per ton, ventilation, and margin.
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Kitchen Hood CFM Calculator
Estimate kitchen exhaust hood airflow from hood size, capture velocity, exposure, and margin.
Open ToolHow to use this collection
Start with the calculator closest to the project question, load the sample data, then replace values with your project assumptions. Use warnings and methodology notes to decide what needs formal verification before procurement, authority submission, or construction.