ElectriCalc Pro Alternatives — NEC 2023 & 2026 Without the Subscription
ElectriCalc Pro Is Now a Subscription — Here Are Your Options
Calculated Industries moved ElectriCalc Pro to a subscription model in 2025: $29.99/year after a 7-day free trial. For electricians who bought the app years ago and relied on it for NEC wire sizing, voltage drop calculations, and conduit fill, the subscription shift was unwelcome.
The irony is thick: the tool tradespeople use to calculate costs on the job site is now a recurring cost itself.
What ElectriCalc Pro Does
ElectriCalc Pro covers the core NEC calculations: wire sizing from Tables 310.16 and 310.17, voltage drop using the standard K-factor formula, conduit fill per Chapter 9 tables, Ohm’s law, and motor calculations. It’s built around the same physical-calculator interface that Calculated Industries has used for decades — functional, if dated.
With a 4.9-star rating (though only 307 reviews), it’s well-regarded by the electricians who use it. The problem isn’t the tool — it’s the pricing model.
What Electricians Actually Need in a Calculator App
Not every electrician uses every NEC calculation daily. The usage pattern breaks down roughly like this:
Daily use for most electricians: Voltage drop (especially on longer residential runs), wire sizing for branch circuits, and Ohm’s law for troubleshooting.
Weekly or project-dependent: Conduit fill (new construction and remodels), motor calculations (commercial and industrial), box fill calculations.
Occasional reference: Ambient temperature derating, conductor bundling adjustment factors, service entrance sizing.
A good alternative needs to nail the daily-use calculations. The rest is a bonus.
The Alternatives
FieldLab Electrician NEC Calculator — $9.99 One-Time
FieldLab’s Electrician NEC Calculator covers voltage drop (single-phase and three-phase), wire sizing with derating factors, Ohm’s law with power calculations, and conduit fill. It ships with both NEC 2023 and NEC 2026 tables bundled — no in-app purchase required for code updates. The interface is native SwiftUI with dark mode enabled by default, which matters when you’re working inside a panel with a headlamp.
Price: $9.99 one-time — both NEC editions included Our bias: We built this. We think it’s the best option, but we’re listing competitors honestly so you can decide.
Electrical Calc Elite — $19.99 One-Time (Plus NEC 2023 Add-On)
Electrical Calc Elite by Cyberprodigy LLC is a one-time purchase at $19.99, which makes it a reasonable alternative to ElectriCalc Pro’s subscription. It covers wire sizing, voltage drop, and conduit fill.
The catch: NEC 2023 tables are a paid add-on on top of the $19.99 base price. The UI dates to roughly 2015, there’s no dark mode, and no Dynamic Type support. With only 124 ratings, it has a small user base but a solid 4.8-star rating.
Price: $19.99 + additional cost for NEC 2023 tables
Free Web Calculators
For quick field calculations, BuiltByFieldLab.com offers free voltage drop, Ohm’s law, and wire size calculators that run in your phone’s browser. No app install, no account. The web versions cover standard scenarios — single-phase copper circuits, basic Ohm’s law relationships.
The app goes further with three-phase calculations, aluminum conductors, temperature correction factors, and detailed NEC compliance reporting. But if you just need a quick voltage drop check on a 120V residential run, the free calculator handles it.
Try the free voltage drop calculator → Try the free Ohm’s law calculator →
The Cost Comparison
| Calculator | Price | NEC 2023 | NEC 2026 | Annual Cost |
|---|---|---|---|---|
| ElectriCalc Pro | $29.99/yr | Included | Unknown | $29.99 |
| Electrical Calc Elite | $19.99 once | Paid add-on | Unknown | $0 |
| FieldLab Electrician NEC | $9.99 once | Included | Included | $0 |
| BuiltByFieldLab.com (web) | Free | N/A | N/A | $0 |
Dark Mode Matters More Than You Think
This might seem minor, but it’s not. Electricians regularly work in panels, attics, basements, and crawl spaces with minimal lighting. A bright white calculator screen destroys your dark adaptation and makes your headlamp less effective. Both ElectriCalc Pro and Electrical Calc Elite ship with light-mode-only interfaces. FieldLab’s app defaults to dark mode and follows your system setting.
Frequently Asked Questions
Does FieldLab’s app include NEC 2026?
Yes. Both NEC 2023 and NEC 2026 tables are included in the $9.99 purchase price. No add-on required.
Can I still use ElectriCalc Pro without the subscription?
If you purchased it before the subscription change, check your App Store purchase history. You may be able to restore your prior purchase. New users must subscribe.
Which NEC edition should I be using?
That depends on your state’s adoption schedule. Check our NEC Code Adoption Tracker to see which edition your state currently enforces.
Are the free web calculators accurate?
Yes. They use the same formulas as the app — the voltage drop calculator uses VD = (2 × K × I × D) / CM with standard K values of 12.9 for copper and 21.2 for aluminum. The app adds features like three-phase mode and temperature correction, but the core math is identical.