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Interactive Electrical Tools

Interactive engineering utilities and decoders designed for real-time calculation and visualization.

Universal

Universal Electrical Unit Converter

Instantly convert between SI metric units and engineering prefixes for Voltage, Current, Resistance, Power (Watts, kW, HP, BTU/hr), Energy, and Capacitance.

Launch Tool
Visual GUI

Interactive Resistor Color Decoder

Visually select 4-band, 5-band, and 6-band resistor color chips to calculate resistance in Ohms, tolerance range (±%), and temperature coefficients.

Launch Tool
Simulation

Advanced Battery Life & Runtime Estimator

Precision battery runtime simulator factoring in Peukert exponent losses, temperature derating, continuous discharge C-rates, and depth-of-discharge cutoffs.

Launch Tool
VoltBasePRO

Calculators that show their working, so you can check the answer before you trust it.

Free Engineering Utilities

Calculators

  • Ohm's Law
  • Voltage Drop
  • Wire Sizing
  • Battery Runtime
  • Solar Array Sizing
  • Breaker Sizing
  • View All Calculators →

Converters & Charts

  • AWG to mm²
  • Watts to Amps
  • kW to HP
  • AWG Wire Table
  • Battery SoC Chart
  • Resistor Color Code

Reference & Guides

  • All Articles & Guides →
  • Master Formulas
  • Grounding vs Bonding
  • 3-Phase Motor Sizing
  • Transformer Sizing
  • Conduit Fill Guide
  • Unit Converter Tool

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Engineering Disclaimer: Calculations, estimations, formulas, and charts provided on VoltBase Pro are intended solely for educational, reference, and informational purposes. Real-world electrical installations must comply with local electrical codes (e.g. NEC, IEC, CEC) and should always be verified by a licensed electrician or professional electrical engineer.

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High-Performance Static Electrical Engineering Suite