Sparky Toolbox

Stop wasting time with manual paperwork or complex formulas. Built specifically for electrical contractors and field electricians, this app delivers fast, on-the-job preliminary calculations right from your phone.
Whether you are estimating a project, bidding a job, or verifying field measurements, these 9 powerful calculators streamline your workflow and save you time.

9 Essential Calculators in One App
Ohms Law: Instantly solve for voltage, current, and power.
Motor OCPD & Wire Sizing: Determine Overcurrent Protection Devices and wire sizes for motors.
Transformer OCPD & Wire Sizing: Get breaker and conductor sizing for transformer loads.
Wire Selection & Sizing: Select wire size and matching OCPD for any specific application.
Conduit Fill: Check total wire capacity limits for your conduit runs.
Voltage Drop: Estimate voltage loss over long distances to keep your systems efficient.
Standard Dwelling Load: Simplify residential service calculations in seconds.
Transformer Sizing: Determine the kVA rating needed for your specific load requirements.
Solar Panel Calculator: Input energy targets to find how many PV panels you will need.
Why Electricians Love This App

Built for the Field: Clean, high-contrast interface designed for easy use on busy job sites.

Fast Estimates: Generate quick preliminary calculations to speed up project bidding.

Lightweight & Fast: Opens instantly without lagging, saving you time when every minute counts.

Download now and put a full suite of electrical tools right in your pocket!