ElectriCalc: NEC Calculator
Wire Size, Voltage Drop, AWG
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
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.
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FREE TOOLS
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- 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.
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PRO CALCULATORS
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- 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.
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TRY BEFORE YOU BUY
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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
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FOUR STANDARDS, TWO LANGUAGES
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- 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
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PROFESSIONAL FEATURES
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- 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.
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WHY ELECTRICIANS CHOOSE ELECTRICALC
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- 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/
Ratings & Reviews
v2.0.1 — Now you plan the panel, not just the math.
NEW: PANEL PLANNER
Build your distribution board right on screen. Drag MCBs, RCDs, busbars and terminals onto the DIN rail, wire them up, label everything — then hand over a clean PDF.
• REAL DEVICE PALETTE — MCB, RCD/RCBO, SPD, busbars, terminals and more, on an actual rail.
• MARKINGS — drop appliance symbols (oven, EV charger, heat pump…) and text labels, then resize and colour-code them.
• ONE-TAP PDF — export a tidy board schematic + parts list, ready for handover.
• 4 STANDARDS, 2 LANGUAGES — NEC · CEC · BS 7671 · DIN VDE, fully in English and German.
This release is built on your reviews and emails — keep them coming.
— The ElectriCalc Team
The developer, Yusuf Can Samiloglu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yusuf Can Samiloglu
- Size
- 46 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 4 more
- English, French, German, Italian, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- ElectriCalc Pro — Lifetime $59.99
- ElectriCalc Pro — Monthly $9.99
- Copyright
- © 2026 Trade Calc Suite
