Engineering tools
Find a calculator, prepare field work or organise a project. Calculators are free; saved workspaces require sign-in.
64 tools · choose a category or search to narrow the list
Troubleshooting assistant
Collect evidence for a drive speed-reference problem.
Open tool Project & field workflowsLoop checks & commissioning
Five-point loop checks and data-logging worksheets.
Open tool Project & field workflowsProject brief builder
Organise your controls requirements into a brief.
Open tool Project & field workflowsPanel readiness
Prepare a control-panel or machine-upgrade assessment.
Open tool Project & field workflowsStandards & project checks
Review documented panel data against reference checks.
Open tool Project & field workflowsProject workspace
Save equipment, I/O registers and test records privately.
Open tool Project & field workflowsControls handbook
Field workflows, templates and official references.
Open tool Project & field workflowsPlanning & comparison
Compare I/O, parts, buffers and data samples.
Open tool Project & field workflowsOffline field kit
Download selected tools for offline field preparation.
Open tool Calculations555 timer
Monostable pulse duration and classic astable period, frequency and duty cycle.
Open tool CalculationsResistive attenuator
Attenuator network resistances for equal input and output impedances.
Open tool CalculationsEstimated battery life
Estimate runtime from capacity, average current and usable capacity.
Open tool ConversionsCapacitance conversion
Convert capacitance between selected source and target units to compare datasheets.
Open tool CalculationsCapacitor discharge
Time to reach a target capacitor voltage, or resistance needed for a specified time.
Open tool CalculationsCurrent divider
Current in two parallel resistive branches.
Open tool ConversionsdBm and watts conversion
Convert absolute power relative to one milliwatt.
Open tool ConversionsDecimals and fractions
Convert decimals to the nearest fraction with a limited denominator, or fractions to decimals.
Open tool IdentificationPlug identification guide
Identify plug type, pin count and grounding by type designation.
Open tool ConversionsEnergy conversion
Convert energy between selected source and target units to compare datasheets.
Open tool ConversionsForce conversion
Convert force between selected source and target units to compare datasheets.
Open tool ConversionsFrequency, wavelength and period
Frequency and wavelength relationship for a specified propagation speed.
Open tool ConversionsInductance conversion
Convert inductance between selected source and target units to compare datasheets.
Open tool CalculationsLED series resistor
Current-limiting resistance and dissipation for an LED string.
Open tool ConversionsLength conversion
Convert length between selected source and target units to compare datasheets.
Open tool CalculationsLow-pass and high-pass filters
The −3 dB cutoff frequency of a first-order RC or RL circuit.
Open tool ConversionsNumber base conversion
Convert non-negative integers between bases 2, 8, 10 and 16, with logical shifts.
Open tool CalculationsOhm's law and DC power
Find voltage, current, resistance and power in a resistive circuit from two independent quantities.
Open tool CalculationsSeries and parallel resistors
Equivalent resistance of ideal resistors.
Open tool CalculationsPCB trace width
Preliminary internal and external copper trace width estimates using the IPC-2221 empirical relationship.
Open tool ConversionsPressure conversion
Convert pressure between selected source and target units to compare datasheets.
Open tool CalculationsReactance and susceptance
Ideal inductive and capacitive reactance at the selected frequency.
Open tool IdentificationResistor colour code
Identify four-, five- or six-band resistor values, reading from the first band.
Open tool CalculationsSeries and parallel capacitors
Equivalent capacitance of ideal capacitors.
Open tool IdentificationSMD capacitor code
Read numeric capacitance codes, decimal R notation and EIA-198 letter codes.
Open tool IdentificationSMD resistor code
Read three-/four-digit codes, decimal R notation and EIA-96.
Open tool ConversionsTemperature conversion
Convert Celsius, Fahrenheit and kelvin with an absolute-zero check.
Open tool CalculationsThree-phase power
Apparent, active, reactive and output power from line voltage and current.
Open tool CalculationsRC time constant
Time constant and capacitor voltage during ideal charging or discharging.
Open tool CalculationsPCB trace impedance
Approximate single-ended microstrip or symmetrical stripline impedance.
Open tool CalculationsVoltage divider
Output voltage across the lower resistor of an unloaded divider.
Open tool ConversionsVolume conversion
Convert volume between selected source and target units to compare datasheets.
Open tool ConversionsMass conversion
Convert mass between selected source and target units to compare datasheets.
Open tool ConversionsAWG wire size
Diameter and cross-sectional area of solid round wire by AWG.
Open tool Conversions4–20 mA scaling
Convert transmitter current to engineering units and vice versa.
Open tool ConversionsLinear scaling and 0–10 V signals
Scale PLC counts, voltage or any two linear ranges.
Open tool IdentificationIPv4 subnet
Network address, mask and full address range.
Open tool CalculationsVision image resolution
Physical size per pixel along one field-of-view axis.
Open tool CalculationsMotor synchronous speed
Rotating field speed from frequency and pole count.
Open tool CalculationsCable voltage drop
Resistive voltage-drop estimate for copper cable using one-way length.
Open tool CalculationsEncoder pulse rate
Relate shaft speed and counted edges.
Open tool CalculationsCycle time and throughput
Estimate ideal output from a fixed production cycle.
Open tool CalculationsConveyor travel time
Estimate travel time at a constant measured speed.
Open tool CalculationsRectangular tank fill volume
Calculate geometric volume from internal dimensions.
Open tool CalculationsError as a percentage of span
Compare an actual reading with a reference.
Open tool CalculationsIdeal digital resolution
Estimate a uniform converter's quantization step.
Open tool CalculationsPulse-to-volume total
Convert counted pulses using a stated meter factor.
Open tool CalculationsPLC task time budget
Compare measured execution time with a configured task interval.
Open tool CalculationsObserved operating availability
Calculate availability for a clearly defined scheduled period.
Open tool CalculationsDecimal and binary file size
Distinguish storage-capacity units without mixing GB and GiB.
Open tool CalculationsAnalog signal scaling
Convert a 4–20 mA or 0–10 V field signal to engineering units and percent of span.
Open tool CalculationsAC motor synchronous & slip speed
Relate supply frequency, pole count and slip for an AC induction motor.
Open tool CalculationsPipe flow velocity
Estimate fluid velocity in a full round pipe from volumetric flow and inside diameter.
Open tool CalculationsPID band, gain & reset conversion
Convert proportional band to controller gain, and integral time to reset rate.
Open tool CalculationsControl-panel UPS backup time
Approximate battery backup time for a control panel from battery capacity and load.
Open toolFor preliminary checks and learning. Verify results against equipment data and project requirements. These tools do not certify a design.