ElectriCalc: NEC Calculator

NEW: Panel Planner — design your distribution board and export a PDF. Plus try every Pro calculator free, and a Lifetime plan: pay once, use forever.

ElectriCalc is the professional electrical toolkit trusted by electricians, contractors, and engineers - fast, accurate, code-compliant work right from your iPhone. Now with a full Panel Planner.

NEW: PANEL PLANNER Design your distribution board on screen. Drag MCBs, RCDs/RCBOs, SPDs, busbars and terminals onto a real DIN rail, wire them up, add appliance markings and labels, then export a clean board schematic and parts list as a PDF - ready for handover.

BUILT FOR THE JOB SITE Everything works 100% offline. No internet needed. No data collected. Just fast, reliable answers when you need them.

FREE TOOLS

• PANEL PLANNER: free to enter and draw; core devices included.
• VOLTAGE DROP: branch and feeder circuits, instant NEC 3%/5% check.
• AMPACITY LOOKUP: NEC Table 310.16 and CEC Table 2 at your fingertips.
• GROUND WIRE SIZING: equipment grounding per NEC 250.122 / CEC Table 16.

PRO CALCULATORS

• WIRE SIZING: the right conductor for any circuit (voltage drop, ampacity, temperature).
• CONDUIT FILL: raceway fill percent for EMT, IMC, RMC, PVC and flexible conduit.
• DWELLING LOAD CALC: service sizing per NEC Article 220 / CEC Rule 8-200.
• BOX FILL: junction box sizing per NEC Chapter 9.
• DERATING: temperature and conduit-fill ampacity factors.
• MOTOR CALC: motor branch circuit protection per NEC Article 430 / CEC Rule 28.
• TRANSFORMER: overcurrent protection per NEC Article 450 / CEC Rule 26.

TRY BEFORE YOU BUY

Every Pro calculator includes free calculations to verify the accuracy before you decide. No pressure.

• Lifetime: one-time purchase, yours forever
• Monthly: subscription, cancel anytime

FOUR STANDARDS, TWO LANGUAGES

• NEC (National Electrical Code): 2023 and 2026 editions
• CEC (Canadian Electrical Code): 2024 (CSA C22.1)
• BS 7671 (UK Wiring Regulations)
• DIN VDE 0100 (Germany)
• Full English and German interface, auto-detects your region

PROFESSIONAL FEATURES

• PDF EXPORT: professional reports and panel schematics with your logo and license number. US Letter or A4.
• CALCULATION HISTORY: every calculation saved automatically, with job names.
• COMPARISON MODE: compare two calculations side-by-side.
• SIRI SHORTCUTS: voice access, hands-free on the job site.
• HOME SCREEN WIDGET: your last calculation at a glance.

WHY ELECTRICIANS CHOOSE ELECTRICALC

• 100% offline: works in basements, attics, and remote sites
• NEC + CEC + BS 7671 + DIN VDE: true multi-standard support
• Verified data: cross-checked against official code books
• No ads, no tracking, no account required
• Professional PDF reports: impress clients and inspectors

Download ElectriCalc today and leave the code books in the truck.

Terms: https://elly2504.github.io/electrocalc-pages/terms-of-use.html Privacy: https://elly2504.github.io/electrocalc-pages/privacy-policy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/