The New Gold Standard for Electrical Calculations
Offline-first. Globally ready. Built for the field. The only electrical calculator with a visual conduit engine, multi-cycle NEC logic, jurisdiction awareness, and professional reporting.
What You Get
Professional-grade electrical calculations built for the demands of modern field work.
Exact NEC Logic
Multi-cycle support for NEC 2017–2026 with automatic adjustments, corrections, and table lookups.
Jurisdiction Auto-Detection
Automatically detects your region's code cycle with full manual override capability.
Mini-CAD Conduit Fill
Visual geometric engine shows exactly how wires fit, including jam ratio awareness.
Offline-First Engine
All calculations run locally on your device. No internet required in the field.
Professional Reports
Generate standardized PDF reports with NEC citations, inputs, and visual conduit diagrams.
Inspector-Friendly Docs
Clear documentation designed to reduce inspection delays and support permit approvals.
See Inside the Conduit with
Mini-CAD Visualization
The conduit fill calculator reimagined. Visualize real conductor geometry, packing efficiency, spacing, and jam conditions before pulling wire.
- Drag-and-drop wire placement
- Auto Pack optimizes layout instantly
- Jam awareness for problematic ratios
- X-Ray mode for dense conduit bundles
Actual app interface captured on iPhone Simulator
From Field Notes to Consistent Documentation
Replace informal calculations with professional, standardized reports that stand up to scrutiny.
The ConduitLab Report™
Every calculation generates a complete, professional PDF report. No more screenshots, no more informal notes. Just clear, consistent documentation that inspectors and engineers trust.
- NEC citations included for every calculation
- All inputs and assumptions clearly visible
- Visual conduit cross-section appendix
- Designed for inspectors and permanent records
Always on the Right NEC Code Cycle
ConduitLab detects your region and suggests the applicable NEC cycle automatically. You can override the code year at any time.
Exact Calculations for the Field
Everything you need—fast, accurate, and offline.
Ampacity Calculator
Full NEC adjustment engine. Handles rooftop conditions, bundling, temperature corrections, and terminal temperature limits.
Voltage Drop
Impedance-based AC method with power factor and raceway adjustments. Get results that match real-world measurements.
Conduit Fill
Exact dimensional modeling using NEC-aligned conductor geometry. Supports nipples, EMT, PVC, RMC, and IMC with jam detection.
Frequently Asked Questions
Which NEC versions does ConduitLab support?
ConduitLab supports NEC 2017, NEC 2020, NEC 2023, and NEC 2026. The app can automatically select the prevalent code cycle for your region, and you may override it at any time.
What is the ConduitLab Report?
It is a standardized PDF report with all inputs, NEC-referenced methodology, and a conduit cross-section appendix. It replaces screenshots and inconsistent documentation.
Does the app work offline?
Yes. Every calculation engine—including ampacity, voltage drop, and the conduit visualizer—runs locally on your device.