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Professional calculators, built for the tools.

Design-grade calculation engines that print proper reports you can hand to a builder or keep on the job file. Free from TradieRoles, the Australian trades job board.

HVAC & Refrigeration

DUCTIQ

Duct static pressure calculator. Round, rectangular and flat oval, full fittings and plant library, Darcy–Weisbach with Colebrook friction factors. Prints a design report with methodology.

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Electrical

VOLTIQ

Voltage drop for single phase, three phase and DC — every cable size, copper or aluminium, temperature corrected — plus a conduit fill checker. Prints a circuit report.

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Plumbing

PUMPIQ

Pump sizing by total dynamic head: static lift, pipe friction, valves and equipment losses at your design flow. Gives the duty point to take to a pump curve, with a printable report.

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HVAC & Air Conditioning

HVACIQ

Air conditioning heat load calculator. Fabric, solar, glazing, occupancy and ventilation loads with real psychrometrics — sensible, latent and total kW, with a printable report.

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Refrigeration

CHILLIQ

Coolroom refrigeration load calculator. Panel transmission, infiltration, product pull-down and internal gains, sized over compressor run time. Printable report.

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Refrigeration

FREEZEIQ

Freezer room load calculator with three-stage product freezing: sensible, latent heat of fusion and sub-freezing loads. Printable report.

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