🌍 Among the world’s first free web platforms to offer a comprehensive suite of standards-informed tools for electrical engineering — available anytime, anywhere. This web application provides professional-grade calculators that help electrical engineers, professionals, and students save time on complex calculations. This comprehensive suite includes tools for cable sizing, voltage drop calculation, UPS/battery selection, power factor correction, transformer calculations, motor efficiency analysis, VFD selection, short circuit current calculation, harmonic distortion analysis, arc flash risk assessment, motor starting current calculation, grounding system design, conduit fill calculation, protective relay coordination, breaker sizing, communication cable loss, cable thermal rating, and neutral earth fault current calculation. These specialized tools automate tedious manual computations - delivering instant, accurate results based on IEEE, IEC, and NEMA industry standards.
- Time-saving automation - Eliminate hours of manual calculations
Cable Sizing Calculator
Calculate appropriate cable sizes based on load and distance, ensuring safe and efficient power transmission.
Voltage Drop Calculator
Determine voltage drop across cables and conductors to maintain optimal equipment performance and energy efficiency.
Industrial UPS Sizing Calculator
Size Uninterruptible Power Supply (UPS) systems for industrial applications, ensuring continuous power for critical loads during outages.
Industrial Battery Sizing (AH) Calculator
Calculate battery capacity requirements in Ampere-hours (AH) for various industrial backup power systems.
Unit Converter
An essential engineering toolbox for quick and accurate unit conversions across various electrical quantities.
Transformer Calculator
Calculate turns ratio, impedance, and sizing for various types of transformers.
Power Factor Correction Calculator
Size capacitor banks for power factor correction, improving electrical system efficiency and reducing utility costs.
NEMA Motor Efficiency Calculator
Calculate motor efficiency and potential energy savings for NEMA-rated motors.
VFD Selection Tool
Select appropriate Variable Frequency Drives (VFDs) for motor control applications, optimizing speed and torque.
Short Circuit Current Calculator
Calculate fault currents for electrical system protection, ensuring proper sizing of protective devices.
Harmonic Distortion Calculator
Analyze harmonic content in power systems to mitigate issues like equipment overheating and power quality problems.
Electrical Protection Device Selector
Determine the appropriate type and rating of electrical protection devices, such as circuit breakers and fuses, for various circuits.
Motor Starting Current Calculator
Calculate inrush current and starting torque for electric motors, crucial for proper motor and power system design.
Grounding System Design Calculator
Design safe and effective grounding systems to protect personnel and equipment from electrical hazards.
Conduit Fill Calculator
Determine the maximum cable capacity in conduits according to electrical codes, preventing overcrowding and ensuring proper heat dissipation.
Protective Relay Coordination
Helps in settings for overcurrent, differential, and distance relays
Breaker Sizing & Selection
Calculates thermal and magnetic trip settings for circuit breakers, ensuring adequate protection for electrical circuits and equipment.
Communication Cable Loss
Calculates signal loss for twisted pair, coaxial, or fiber optic communication cables.
Cable Ampacity Calculator
Determine the current carrying capacity of cables under various operating conditions, considering ambient temperature, installation methods.
Neutral Earth Fault Current Calculator
Calculate neutral earth fault currents for solid, resistive, or isolated grounding systems.
Earth Conductor Size Calculator
Calculate the appropriate size for earthing conductors to safely dissipate fault currents into the ground.
HVAC Sizing Calculator
Determine heating, ventilation, and air conditioning requirements for electrical rooms and control centers.
Maintenance Activities Guide
Provides guidance for electrical equipment maintenance schedules and best practices.
Equipment Relay Setting Calculator
This tool helps in calculating the optimal relay settings for various electrical equipment, ensuring precise and coordinated protection.
Lighting Design Calculator
For calculating illumination requirements and circuit loads for various lighting applications.