# Voltkit: NEC Conduit Fill Calc — Conduit Bending & Voltage Drop

> Conduit Bending & Voltage Drop (iPhone/iPad app by Chirag Arora.)

- Source: https://appshunter.io/ios/app/voltkit-nec-conduit-fill-calc/id6783893946 (this page in markdown: same URL + `.md`)
- Developer: [Chirag Arora](https://appshunter.io/developer/1892433885)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 44 MB
- Languages: American English
- Released: 2026-07-02
- Data updated: 2026-07-18
- User reviews in markdown: https://appshunter.io/ios/app/voltkit-nec-conduit-fill-calc/id6783893946/reviews.md

## What is Voltkit?

Voltkit is a precision NEC calculator built for working electricians — fast, accurate, and 100% offline. Every result cites the exact NEC 2023 table or formula behind it, so you can trust the number on the job and back it up to an inspector.

— 17 PRO CALCULATORS —
• Voltage Drop — approximate-K and exact Chapter 9 (Table 9 R/X) methods
• Conduit Fill — 10 raceways and every insulation, Chapter 9 Table 4
• Wire Size — the smallest conductor that meets both ampacity and voltage drop
• Wire Ampacity — Table 310.16 with ambient and bundling adjustments, plus free-air
• Box Fill — NEC 314.16 with a full standard-box picker
• Conduit Bending — offset, rolling, and saddle bends
• Ohm's Law and AC Power — watts, VA, and power factor, single- and three-phase
• Grounding — EGC (250.122), GEC (250.66), and 250.122(B) upsizing
• Dwelling Load — optional and standard methods (Article 220)
• Motor — full-load current, conductor, overload, and OCPD (Article 430)
• Plus Transformer, Pull Box, Parallel Sets, Motor Feeder, Power-Factor correction, and Appliance Demand

— BUILT FOR THE FIELD —
• Works entirely offline — every NEC table lives on your device, no signal required
• Show Calculation — open any result into clear, step-by-step math
• Save jobs and reopen them later from your calculation history
• Built-in NEC reference tables: ampacity, conduit fill, box fill, conductor properties, and more
• NEMA receptacle and conductor color-code references

— WHY ELECTRICIANS TRUST VOLTKIT —
Every calculation is derived from a published NEC 2023 table or formula and checked against authoritative worked examples (Mike Holt, Ugly's, NEC Annex C). No ads, no clutter, no internet required — just a clean, precise instrument that respects your trade.

— FREE, WITH OPTIONAL PRO —
Voltkit is free to use: every calculator gives you a complete, NEC-cited result and full worked steps. Voltkit Pro unlocks the advanced options for commercial and industrial work — three-phase, exact-impedance voltage drop, free-air ampacity, every raceway and insulation, larger conduit, box and parallel runs, over-1000 V transformers, and the full standard load calc — plus unlimited saved calculations. Prices may vary by region.

Built in the US for NEC 2023. Canadian CEC, BS 7671, and AS/NZS 3000 code packs are on the roadmap.

Voltkit is an independent tool and is not affiliated with or endorsed by the NFPA.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Voltkit Pro - Monthly | $4.99 | per month |
| Voltkit Pro - Yearly | $29.99 | per year |



## Version history (last 3 releases)

### 1.1.0 — 2026-07-10

Voltkit now has the deepest conduit-bending toolset around:

• Every bend drawn to scale — offsets, saddles, stubs & rolling
• 90° stub-ups with take-up, plus back-to-back
• 3-point and 4-point saddles
• Segment (large-radius) and concentric parallel-rack bends
• Bend Length — developed length + gain
• 360° bend-total check (NEC 358.26)
• Minimum bend radius (NEC Chapter 9, Table 2)
• Fractional 1/16" marks throughout, plus custom angles

As always: every result cited to NEC 2023, fully offline.

### 1.0.1 — 2026-07-07

Bug fixes and performance improvements.

### 1.0 — 2026-07-02

No release notes.

## More apps by Chirag Arora

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- [GoSober: Sobriety Tracker](https://appshunter.io/ios/app/gosober-sobriety-tracker/id6763368422)
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- [Caloreo: Snap & Log Calories](https://appshunter.io/ios/app/caloreo-snap-and-log-calories/id6780207048)

All apps by Chirag Arora: https://appshunter.io/developer/1892433885

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-18.*