Calculators built around real plant problems.
Fast first-pass calculations with assumptions, units and boundaries shown clearly. Tools near regulated or high-consequence design areas are intentionally presented as preliminary screening only.
Fluid & Piping
4 toolsAS 4041 Pipe Wall Thickness & MAOP Calculator
Screen straight-pipe internal-pressure wall thickness, nominal wall after allowances and under-tolerance, and an inverse MAOP from the entered wall.
I know the pipe diameter, pressure, material design strength and AS 4041 factors. What wall does the simple pressure equation require, and what pressure does my entered wall screen to?
Pipe Pressure Drop Calculator
Estimate Darcy-Weisbach friction loss, minor losses, static head and total head required for a pipe run.
I need to run 50 metres of new 100NB pipe to a new tank. Will my existing pump have enough head?
Pipe Flow Velocity Calculator
Convert flow rate and internal diameter into average velocity and compare it with your project screening limit.
We are increasing the flow rate. Is the fluid going to exceed our velocity limit?
Straight Pipe Friction Loss Calculator
Estimate Darcy-Weisbach friction head and pressure loss for a straight pipe run, with velocity, Reynolds number and friction factor shown.
I know the flow, bore and length. How much pressure will I lose through the straight pipe before fittings and elevation are added?
Pumps & Hydraulics
4 toolsPump Power & Efficiency Calculator
Calculate hydraulic power, pump shaft power, estimated electrical input and a motor sizing screening value.
I know the flow and head. What shaft kW and motor input should I expect?
Pump Power & NPSH Calculator
Estimate hydraulic and shaft power, NPSH available and margin against the pump manufacturer's NPSH required value.
The pump duty point looks achievable. Does the suction arrangement provide enough NPSH margin to avoid cavitation?
Hydraulic Cylinder Force & Speed Calculator
Calculate ideal extend and retract force, actuator speed, stroke time and oil volume for a double-acting single-rod cylinder.
I know the bore, rod, pressure and flow. What force and cycle speed should I expect from the cylinder?
Hydraulic Reservoir Sizing Calculator
Estimate a starting reservoir volume from pump flow and screen whether the exposed tank surface can dissipate the entered heat load.
How large should the hydraulic tank be, and is passive heat loss likely to be enough without an active cooler?
Vessels & Tanks
3 toolsAS 1210 Vessel Shell Thickness & MAWP Calculator
Screen cylindrical or spherical shell internal-pressure thickness, nominal wall after allowances and under-tolerance, and MAWP from an entered wall.
I have the vessel diameter, pressure, material design strength and joint efficiency. What shell wall does the pressure equation require, and what MAWP does the entered nominal wall screen to?
Tank Volume & Partial Fill Calculator
Calculate liquid volume in a horizontal cylindrical tank with flat, hemispherical or 2:1 ellipsoidal ends.
The dip reading is 400 mm. How many litres are actually left in the horizontal tank?
Hydrostatic Test Pressure Planning Calculator
Apply a user-confirmed test factor, optional stress ratio and liquid-head correction to plan a hydrostatic test target.
The design pressure is 1,000 kPa. What target follows from the approved factor and gauge location?
Cranes & Lifting
1 toolsStructural & Mechanical
5 toolsBolt Torque & Tension Calculator
Estimate metric bolt tensile stress area, target preload and installation torque using a user-selected nut factor.
The fitters are installing M24 bolts. What torque should I place on the drawing?
Simple Beam Deflection Calculator
Estimate elastic deflection, bending moment and bending stress for common simple beam cases.
A 500 kg pump sits on a two-metre beam. Will the beam sag enough to affect alignment?
Combined Structural Stress Calculator
Estimate axial, biaxial bending, shear, torsional and von Mises stress for an idealised member, bracket or shaft critical section.
A bracket arm carries a known load at a known distance. What stress occurs, and what section size should I start with?
Weld Throat & Capacity Calculator
Calculate fillet-weld throat, effective area, screening shear capacity and required weld length from a user-supplied design stress.
If I use a 6 mm fillet weld, how much shear can the weld carry under my chosen design basis?
Lifting Lug Capacity Calculator
Screen net-section, shear-out and bearing limit states for a simple plate lug, with explicit dynamic and load-sharing assumptions.
We cut a 20 mm plate lug for a two-tonne lift. Is the pin-hole region obviously inadequate?
Access & Safety
3 toolsAS 1657 Access Slope & Ladder Pitch Calculator
Calculate access angle from rise and horizontal offset, compare it with the selected stair or ladder slope range, and show the offset needed at the range limits.
I have a fixed platform height and limited floor space. Does the resulting pitch suit stairs, a step-type ladder or a rung ladder?
AS 1657 Stair Geometry Calculator
Check riser, going, the 2R+G proportion, flight riser count and calculated stair angle for a proposed industrial stair flight.
I know the rise available for the platform stair. Does my proposed riser and going combination fit the AS 1657 geometry screens?
AS 1657 Ladder Rung & Handrail Geometry Checker
Check selected rung or tread spacing, clear width and step-type ladder handrail clear space for common AS 1657 ladder arrangements.
The fabricator has proposed rung spacing and ladder width. Are those dimensions within the quick geometry ranges for this ladder type?