Southwire® Conversion Calc vs NEMA Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Southwire® Conversion Calc
This utility app facilitates conversions between copper and aluminum electrical wiring. It allows users to calculate pricing, unit of measure, conversion factors, and weight based on product length. The app comes preloaded with numerous cable types for easy calculation.
- Copper to aluminum conversion
- Aluminum to copper conversion
- Pricing unit of measure calculation
- Conversion factor calculation
- Weight per product length calculation
- Preloaded cable data
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Southwire's Conversion Calculator helps to convert copper to aluminum or aluminum to copper, pricing unit of measure, conversion factor and weight per product length. Preloaded with many cables for calculation.
NEMA Guide
Quickly identify and cross-reference NEMA plug and receptacle configurations with detailed illustrations and specifications. This tool streamlines the process for electricians and electrical professionals by allowing searches by NEMA number or filtering by various electrical parameters.
- Identify NEMA plug and receptacle configurations
- Search by NEMA number
- Filter by voltage, amperage, phase, poles, wires, and grounding
- View matching configurations instantly
- Over 170 configuration illustrations
- Detailed specifications for each configuration
- Offline data storage
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Use the NEMA Guide app to quickly identify and cross-reference NEMA plug and receptacle configurations—a must-have tool for electricians and electrical professionals on the job. Whether you're trying to identify an unknown plug or need to confirm the right receptacle for a specific application, this app streamlines the process. Simply search by NEMA number or filter by voltage, amperage, phase, poles, wires, and grounding type to view all matching results. With illustrations and detailed specs for each configuration, to save you time and avoid guesswork on-site. Features: - Search by NEMA configuration number. - Filter by voltage, amperage, phase, poles, wires, and grounding. - Instantly view matching plug and receptacle configurations. - Over 170 high-quality configuration illustrations. - Tap to view detailed specs for each configuration. - Cross-reference plugs and receptacles with ease. - Data is stored locally for quick use in the field or on the job-site.
Screenshots
Verdict
The clearest difference is rating: NEMA Guide at 5.0 against Southwire® Conversion Calc's 4.2. NEMA Guide also leads on update cadence (every 2 days vs every 4 months). Southwire® Conversion Calc's advantage is ratings volume (5 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NEMA Guide holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Southwire® Conversion Calc has 5 ratings behind it against 1, so its average is the more settled of the two.
Southwire® Conversion Calc ships an update every 4 months, NEMA Guide every 2 days. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.
| Parameter | Southwire® Conversion Calc | NEMA Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 4 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 7 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Southwire Company | Red Zepp LLC |
In-app purchases
Southwire® Conversion Calc
No in-app purchases
NEMA Guide
No in-app purchases
Questions
Is Southwire® Conversion Calc free?
Is NEMA Guide free?
Which has better reviews, Southwire® Conversion Calc or NEMA Guide?
Do Southwire® Conversion Calc or NEMA Guide have ads?
Which is updated more often, Southwire® Conversion Calc or NEMA Guide?
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