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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

COSTIQ

Hourly to annual running costs from kW, watts or amps with a guided duty cycle, plus a brand comparison table to sell the efficient option.

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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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HVAC & Air Conditioning

FILTERIQ

Face velocity check, ISO 16890 grade recommendation by application, and filter bank layout with standard 610 modules. Printable A4 selection sheet.

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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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Chilled water & process cooling

CHILLERIQ

Chiller sizing calculator. Duty in kW at leaving water temperature, flow at delta-T, glycol corrections and freeze protection check. Prints a duty specification ready to send to a supplier.

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Refrigeration

GAUGEIQ

Refrigerant PT, superheat and subcooling. Eight refrigerants, gauge or absolute, glide handled properly. Prints a commissioning record.

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Aerospace (allegedly)

ROCKETIQ

Real Tsiolkovsky delta-v, TWR, computed gravity losses and a payload-to-orbit solver — validated against Falcon 9. Prints a Flight Feasibility Report.

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Concrete & building

SLABIQ

Concrete calculator: slabs, footings and columns to total m³ with waste, ready-mix order size and bag count. Printable order summary.

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Cranes & Rigging

CRANEIQ

Indicative crane match from load weight, radius and lift height across pick & carry, city, all-terrain, crawler and tower classes. Printable lift enquiry sheet for crane company confirmation.

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HVAC commissioning

PACCOMMIQ

Package unit commissioning: live superheat and subcooling with pass ranges, amps vs nameplate with imbalance flags, supply/return ΔT, mechanical checks and optional air balance. One signable record.

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HVAC commissioning

CASCOMMIQ

Cassette commissioning: register, live SH/SC with pass ranges, amps vs nameplate with imbalance flags, mechanical checks and optional per-outlet air balance. Signable record from your phone.

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HVAC commissioning

DUCTCOMMIQ

Ducted split commissioning: live SH/SC with pass ranges, amps vs nameplate, supply/return ΔT both modes, mechanical checks and optional air balance across the outlets. Signable record.

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HVAC commissioning

HIWALLCOMMIQ

Hiwall split commissioning: register, live SH/SC with pass ranges, amps vs nameplate with imbalance flags and mechanical checks. The quick signable record for the everyday split.

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HVAC commissioning

FLOORCOMMIQ

Floor console commissioning: register, live SH/SC with pass ranges, amps vs nameplate with imbalance flags, mechanical checks and optional air balance. Signable record from your phone.

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HVAC commissioning

TBARCOMMIQ

T-bar cassette commissioning: register, live SH/SC with pass ranges, amps vs nameplate with imbalance flags, mechanical checks and optional air balance. Signable record from your phone.

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HVAC commissioning

AHUCOMMIQ

Air handling unit commissioning: live SH/SC, amps vs nameplate with imbalance flags, supply and return static pressure, airflow, mechanical checks and optional air balance. Signable record.

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HVAC commissioning

MULTICOMMIQ

Multi-split commissioning: repeatable indoor-unit register against one outdoor, live SH/SC with pass ranges, amps vs nameplate with imbalance flags and mechanical checks. Signable record.

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HVAC commissioning

VRFCOMMIQ

VRF commissioning: indoor-unit register against one condensing unit, live SH/SC with pass ranges, amps vs nameplate with imbalance flags and mechanical checks. Signable record from your phone.

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HVAC commissioning

FANCOMMIQ

Fan commissioning for inline, curb-mounted, roof exhaust, axial and centrifugal fans: nameplate vs actual, per-phase amps with imbalance flags, mechanical checks and optional air balance.

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Mechanical

QUENCHIQ

Size an MRI helium quench pipe. Estimates helium release, peak quench flow and indicative pressure drop against the magnet's back-pressure limit.

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Electrical

VERIFYIQ

Certificate of test to AS/NZS 3000 Section 8. Visual inspection, per-circuit mandatory tests and sign-off. AU and NZ. Prints to A4.

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Fire Protection

FIREIQ

Baseline data sheet for detection, sprinkler, hydrant, EWIS and smoke control. AU (AS 1670 / AS 1851) and NZ (NZS). Prints to A4.

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Plumbing / Hydraulic

PRESSIQ

Hydrostatic and pneumatic pressure test record to AS/NZS 3500, with backflow, TMV and disinfection sections. AU and NZ. Prints to A4.

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Gas

GASIQ

Gas soundness (leakage) test and appliance commissioning. AU (AS/NZS 5601.1) and NZ (NZS 5261). Let-by, purge and appliance data. Prints to A4.

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