Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 1.9, updated 2026-08-28.
Store screenshots supplied by the developer.
NEC Box & Conduit Calc is the fastest, most accurate way to calculate box fill, conduit fill, required conduit size, and wire volume — all to the NEC (National Electrical Code).
Built for electricians, contractors, engineers, inspectors, and apprentices, it delivers instant, code-compliant results that save time on every job — right from your pocket, even offline.
Key Features
• Box Fill Calculator
– Device counts, equipment grounding, internal clamps
– All common box sizes and types
– NEC-compliant volume with clear breakdowns
• Conduit Fill Calculator
– EMT, PVC, RMC, IMC & more
– Multiple conductor sizes per conduit
– NEC fill percentages with instant pass/fail
• Required Conduit Size
– Enter your conductors, get the correct conduit size instantly
– See the next size up and down…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
No review analysis published for this app.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
Not yet tested. No analysis has been run for this app, so there is no version or date to report.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
Obras (Proyectos): guarda los cálculos en la obra a la que pertenecen y exporta la obra completa en un solo PDF. Se corrigió el tamaño de tubería requerido conforme a la Tabla 1 del Capítulo 9 del NEC: 53 % para un conductor, 31 % para dos y 40 % para tres o más. Se eliminaron todos los anuncios.
Appworthy
nec-box-and-conduit-calcWhat the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.
These are really on sale; we just can’t tell from the name whether they recur.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.