Electrician Field Calculator

NEC-based wire, conduit, voltage, box fill, grounding, motor, and job report tools for US electrical field work.

Electrician Field Calculator is a field calculation toolkit for US electricians, contractors, apprentices, and inspectors who need fast jobsite math on iPhone.

Run 13 practical tools: • Voltage drop • Wire size candidates • Conduit fill with 2D cross-section • Conduit bending marks • Box fill • Ampacity derating • Grounding conductor sizing • Breaker sizing • Raceway size • Transformer calc • Motor circuit calc • Panel schedule • Material takeoff

Every result is built for field review: • NEC 2020 / 2023 / 2026 reference basis • Inputs and assumptions shown with the result • Formula steps • Review notes and warnings • Saved jobs • US Letter PDF reports • Offline workflow • One-time Pro unlock, no subscription

Designed for quick decisions on site: see the final answer first, then review the math, references, warnings, and job record when you need to document the calculation.

Electrician Field Calculator is a field calculation aid. Verify all outputs against local code, project specifications, manufacturer instructions, equipment labels, and AHJ requirements before installation.