Practical engineering calculators across geometry, electrical, conversions and cylinders.
Enter any one value — all others calculate automatically.
Calculate cross-sectional wall area. Useful for weld force calculations.
Enter any two known values to calculate the rest.
Enter any two values. V = IR · P = VI
Calculate current from power, voltage and power factor.
Calculate per-phase current for three phase systems.
Calculate apparent power from voltage and current, or amps from kVA and voltage. Works in both directions.
Convert between HP and kW in both directions.
Convert between RMS and peak voltage.
Enter any value to convert between all units.
Convert between Celsius, Fahrenheit and Kelvin.
Convert between common pressure units.
Convert between common torque units.
Hydraulic or pneumatic — the maths is the same. Enter the bore and rod diameters, plus the pressures on each side, and get the net force at the rod tip. Positive force means the rod is being pushed out, negative means it is being pulled back in. Drain side defaults to zero pressure.
Note — Calculation assumes ideal fluid, no seal friction, and no back-pressure beyond what is entered. Real cylinder force will be slightly lower in service.