Free Automation Calculators & Tools
Practical, no-signup tools for PLC programmers, controls engineers, and maintenance teams.
PLC Commissioning Toolkit
Download editable FAT, SAT, instrument-index, cable-schedule, loop-check, cause-and-effect and control-narrative templates.
Open tool →PLC I/O List Template & Builder
Build a signal register, flag duplicate tags, count I/O and export a clean CSV without uploading project data.
Open tool →Instrument Index Template
Field dictionary, worked example, review workflow and an editable register for instrumentation projects.
Open tool →Cable Schedule Template
Control cable origins, destinations, terminals, construction, routes, glands, drawings and installation status.
Open tool →Cause & Effect Matrix Template
Write traceable trips, alarms, delays, reset rules, bypass controls and verification IDs.
Open tool →OEE Calculator
Calculate Availability × Performance × Quality, export the result and download a clean shift-data template.
Open tool →Current Transformer Calculator
Calculate primary/secondary current, ratio and lead-wire burden with CT safety boundaries.
Open tool →Pt100 / Pt1000 RTD Calculator
Convert resistance and temperature with Callendar–Van Dusen equations and estimate two-wire lead error.
Open tool →Pump Affinity-Law Calculator
Estimate flow, head and power after a speed change, compare scenarios and export results.
Open tool →VFD Energy Savings Calculator
Annual kWh and dollar savings from a VFD on a centrifugal pump or fan, using the affinity laws.
Open tool →4-20mA Scaling Calculator
Convert between mA/volts, engineering units, and PLC raw counts in any direction.
Open tool →Voltage Drop Calculator
Voltage drop, percent drop, and voltage at the load for copper conductors, single or three phase.
Open tool →Motor FLA Calculator
Estimate motor full load amps from HP, voltage, efficiency, and power factor, plus the 125% figure.
Open tool →Control Transformer Sizing
Recommended standard transformer VA from your sealed VA and largest inrush.
Open tool →PLC Salary Calculator
Estimate your earning potential by role, experience, location, industry, and certifications.
Open tool →Protocol Selection Wizard
Answer a few questions and get a recommended industrial communication protocol.
Open tool →Use the tools with the field guides
Calculators estimate; controlled project documents and exact equipment manuals govern the installation. Use the open automation diagram library for reusable training visuals, explore the full PLC and automation guide library, or compare access paths in the free PLC simulator selector.