Online engineering calculators
Pick the calculator you need. Each tool lives on its own page, and more calculators will be added under this hub.
Step-by-step tank design
Seven-step storage tank design: volume, shape, heads, ASME, API 650 and EN 14015 thickness, supports and bill of materials.
Open calculatorMixer tank calculator
Stirred-vessel power, blend time, pumping capacity and scale-up for Rushton, PBT, propeller and other impellers.
Open calculatorAPI 650 floating-roof calculator
Buoyancy, freeboard, rain and pontoon puncture — original HTML calculator.
Open calculatorAPI 650 tank calculator
Shell thickness and stability for API 650 storage tanks — original HTML tool.
Open calculatorShell & tube heat exchanger designer
Bell–Delaware thermal rating, ASME VIII / TEMA mechanical, weight and cost optimizer.
Open calculatorElevated water tank calculator
Elevated steel water tank design and seismic checks — primary calculation file.
Open calculatorElevated water tank calculator (v2)
Improved solver: convergent sizing, tank+support steel objective, and a pruned wider optimiser.
Open calculatorSteel silo calculator
Capacity, geometry, standard plate thickness, supports, wind, seismic and steel weight.
Open calculatorSteam and hot-water boiler calculator
Three-pass firetube boiler — combustion, geometry, pressure-part thickness, drawings and cost.
Open calculatorDeaerator calculator
Deaerator and storage tank — capacity, steam balance, ASME thickness, nozzles, NPSH and GA.
Open calculatorTruck tank calculator
Liquid cargo tank on pickups and trucks — capacity, axles, thickness and drawing.
Open calculatorIon exchange calculator
Ion-exchange softener and multimedia filter — ASME vessel, regeneration, optimizer and drawing.
Open calculatorRibbed liner tank calculator
Bolted ribbed galvanized tank with a flexible liner — plate, bolts, wind, seismic and BOM.
Open calculatorRectangular tank calculator
Wall plates, stiffeners, floor beams, roof and optimiser.
Open calculatorSand filter design calculator
Flow, media, backwash, ASME thickness and GA.
Open calculatorIndustrial carbon vessel calculator
Process, ASME VIII-1, optimiser and BOM.
Open calculatorHeat exchanger thickness calculator
HX component thickness — original HTML tool.
Open calculatorGas cyclone design calculator
Process, performance, ASME VIII-1, optimizer and datasheet.
Open calculatorHydrocyclone separation design
Plitt–Flintoff, ASME VIII-1, optimizer and BOM.
Open calculatorSpherical pressure vessel
ASME shell thickness, plate layout, legs, drawings and cost.
Open calculatorDish-head calculator
Compare and size pressure-vessel heads (torispherical, elliptical, hemispherical, and more).
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