Engineering Tools
Electrical design tools, built for engineers.
A growing suite of free tools to support your electrical engineering work — from quick sanity checks to detailed calculations.
Ohm's Law Calculator
Voltage · Current · Resistance · Power
Calculate any unknown electrical quantity from two known values. Instantly derives voltage (V), current (I), resistance (R), and power (P) using fundamental circuit relationships.
Voltage Drop Calculator
IEC 60364 · Single & Three Phase
Calculate voltage drop across cable runs for single-phase and three-phase circuits. Accounts for cable length, conductor cross-section, material resistivity, and load current.
Power Factor Calculator
kW · kVAR · kVA · PF Angle
Determine apparent power, reactive power, and power factor from any two known values in the power triangle. Useful for sizing capacitor banks and transformer loading assessments.
Transformer Sizing Calculator
Load Assessment · Demand Factor · kVA
Estimate the required transformer kVA rating based on connected loads, demand factor, diversity, power factor, and future growth allowance. Recommends standard transformer sizes.
Short Circuit Current Calculator
Fault Level · IEC 60909 Method
Calculate the maximum prospective short circuit current at any point in a radial network. Based on source impedance, transformer impedance, and cable impedance contributions.
Cable Sizing Tool
IEC 60364 · Installation Methods A–F
Size cables to IEC 60364 accounting for current-carrying capacity, installation method, ambient temperature correction, and grouping derating factors. Outputs minimum conductor cross-section.
Need Something Specific?
We build tools our clients actually need.
If there's a calculation or tool that would save your team time, let us know. We're continuously expanding this suite based on real engineering workflows.
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