ElectricianCalc.com is a free online suite of electrical calculators designed for electricians, engineers, and contractors. It provides NEC-compliant tools for wire sizing, voltage drop, load calculations, conduit fill, box fill, and power factor, all accessible from any device.
Key features include:
- NEC-Compliant Calculations: All tools follow National Electrical Code standards, including NEC 314.16 for box fill, Chapter 9 for conduit fill, and Table 310.16 for ampacity.
- Instant Results: Real-time calculations with immediate feedback and comprehensive analysis for projects.
- Mobile-Ready Design: Responsive layout works on phones, tablets, and desktops for on-the-job use.
- Always Free: No cost for any tools, making them accessible to all professionals.
- Linked Workflow: Results from one calculator can be sent to another (e.g., voltage drop to conduit fill) for efficient circuit design.
Use cases include residential and commercial load calculations, verifying box fill compliance before inspections, and selecting proper wire sizes for long runs. The site stands out for its strict adherence to NEC standards and its focus on practical, real-world electrical work.
Value proposition: Free, accurate, and NEC-compliant electrical calculators built by an electrician for electricians.
