Electrical Engineering
Calculation Tools

Professional-grade tools for cable sizing, lighting design, transformer selection, and more. Built on IEC, IS & BS standards.

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6+
Calculators
IEC
Standards Based
CSV
Import / Export
Free
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Available Calculators

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Cable Sizing
Size cables for any circuit — load current, voltage drop, derating for temperature, grouping & installation method.
IEC 60364IS 3043Multi-rowCSV Export
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Lux Level Coming Soon
Interactive room layout with real-time lux heatmap. Place luminaires and visualise light distribution.
InteractiveHeatmapAuto Place
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Transformer Sizing Coming Soon
Select transformer KVA rating based on connected load, power factor, demand factor and efficiency.
KVA SizingDemand Factor
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Voltage Drop Coming Soon
Calculate voltage drop across any cable run with full derating and reactive component.
IEC 603643-Phase & 1-Phase
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Motor Sizing Coming Soon
Size cables and protective devices for motor circuits with starting current consideration.
DOLStar-DeltaVFD
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Power Factor Correction Coming Soon
Calculate capacitor bank size required to correct power factor to target value.
KVARCapacitor Bank