Free online tools
Engineering tools for industrial automation
Practical calculators and converters for PLC programming, industrial communication, and electrical engineering—built for everyday engineering work.
Featured tool
Most popularPLC Analog Scaling Calculator
Scale raw PLC analog values such as 0–27648 to engineering units—quickly, transparently, and directly in your browser.
All tools
Search the complete catalog or narrow it down by discipline.
5 tools
PLC & Automation
PLC Analog Scaling Calculator
Scale raw PLC analog values such as 0–27648 to engineering units—quickly, transparently, and directly in your browser.
Open toolIndustrial Communication
Modbus Float Converter
Convert IEEE 754 floating-point values between Modbus registers and verify byte and word order.
Open toolElectrical Engineering
Motor RPM Calculator
Calculate synchronous speed and actual motor RPM from frequency, pole count, and slip.
Open toolElectrical Engineering
Three-Phase Power Calculator
Calculate active, apparent, and reactive power in balanced three-phase systems using power factor.
Open toolElectrical Engineering
Voltage Drop Calculator
Calculate voltage drop and cable losses for DC, single-phase AC, and three-phase circuits.
Open tool