Essential Calculation Tools
Access the most commonly used electrical calculators, designed for speed and accuracy on every job.
Motor HP Calculator
Calculate motor horsepower, current draw, and electrical parameters for motor installations.
Voltage Drop Calculator
Calculate voltage drop for equipment grounding conductors and branch circuits.
Conduit Fill & Weight
Calculate conduit fill percentages and total weight for wire installations.
Gutter & Wireway Sizing
Size auxiliary gutters and surface wireways according to NEC requirements.
Pull Box Sizing Calculator
Determine minimum pull box and junction box sizes per NEC Article 314 with 3D visualization.
Why Choose E-Calc Hub?
Built by electricians, for electricians
Job Site Ready
Mobile-optimized calculators that work offline and load instantly
NEC Compliant
All calculations follow current National Electrical Code standards
Always Available
Free access to all tools with no registration required
