Tools for the job
Simulators and calculators for everyday work in the panel and on the plant floor, each with its formula or an explanation of every case. Free and with no sign-up: everything runs in your browser.
Multimeter simulator
Measure voltage, resistance, continuity and current on a three-phase supply and a 24 V control circuit. Make the classic mistakes safely and find faults.
Ladder logic simulator (LAD)
Press the buttons and watch the power flow through the rungs, scan by scan: seal-in, interlock, TON, CTU, double coil and set/reset.
4–20 mA converter
Convert mA to bar, °C, metres or any unit, and back. Flags signals that are out of range.
Siemens analog scaling (0–27648)
Convert the raw value of an S7-1200 or S7-1500 analog module into engineering units, and back.
Ohm’s law and power calculator
Enter any two values and get the other two: voltage, current, resistance and power.
OEE calculator
Availability, performance, quality and OEE of a machine, and where the biggest loss is.
Automation payback calculator
Work out how long an automation project takes to pay for itself and the cumulative result over several years.