Conduit – Electrician Calc
Calc + NEC tables. No ads.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Built in 2026, not 2012. Conduit is the calculator and reference toolkit for working electricians who are tired of plastic-calculator emulators, ads mid-job, and per-NEC-edition upsells.
One-time $14.99. Full Pro toolkit. All NEC editions. Forever.
FREE CALCULATORS
• Ohm's Law / Power Wheel – V, I, R, P for 1φ, 3φ, kVA/HP/BTU
• Unit Converter – Current, Voltage, Power, Length, AWG, Temperature
• Wire Color Code – US (NEC) & Canadian (CEC) standards
PRO CALCULATORS ($14.99 one-time)
• Voltage Drop – 1φ / 3φ / DC with reverse-solve for minimum conductor
• Wire Size / Ampacity – NEC 310.16 with temperature & fill derating
• Conduit Fill – Ch.9 Tables 1/4/5, multi-conductor mix
• Conduit Bending – Offset, saddle, rolling offset, 90° stub
REFERENCE TABLES
• NEC 310.16 Ampacity (60/75/90°C, Cu & Al)
• Ch.9 Table 4 – Conduit cross-sectional areas
• Motor FLA Tables (430.247, 430.248, 430.250)
WHY CONDUIT?
- No ads. Ever.
- No accounts. No sign-in.
- No per-NEC-edition upsells – 2017, 2020, 2023 all included
- No subscription required – $14.99 once, forever
- 7-day free trial of Pro
- 100% offline – works on any jobsite
- Dark mode + Jobsite Red mode
- Glove-friendly tap targets
— LEGAL —
Privacy Policy: https://panxiang1017.github.io/StaticPage/privacy-policy.html
Terms of Use (EULA): https://panxiang1017.github.io/StaticPage/terms-of-use.html
Ratings & Reviews
v1.3 ▸ Residential Load Calc + NEC 2026
▸ Dwelling Load Calculator (NEC 220) — size a residential service two ways: Standard Method (Part III) and Optional Method (220.82). Enter floor area and appliance ratings; get the calculated load, service current, and recommended service size with full NEC citations.
▸ NEC 2026 edition added — free, forever. No per-edition upsell, ever.
▸ Save any load calc to History and export an inspector-ready PDF.
The Dwelling Load Calculator is Pro. NEC 2026 is free for everyone.
The developer, 向 潘, 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
- 向 潘
- Size
- 5.5 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 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Conduit Pro — Unlock All $9.99
- Copyright
- © 2026 Sharp Pan