Calculators · United States
Offline calculators for electricians, builders and HVAC technicians
Ahrefs Domain Rating set in type 12 Nov 2026, reset 11 Nov 2026.
A mobile app with over 35 offline calculators for electrical, building and HVAC work, with no ads, no account required, and results that stay private on your
BuildWire Calc is a mobile application for iOS and Android that provides over 35 offline calculators for electrical, building and HVAC professionals. The app includes tools for wire sizing, voltage drop, conduit fill, concrete calculations, BTU, and more. All calculations run directly on your device with no network connection required, no account setup needed, and complete privacy. The website version offers the same calculators as interactive web tools, with a free tier and Pro subscription options for saving and exporting job reports.
Pricing model: Freemium
Free: nine calculators (voltage drop, Ohm's law, watts to amps, concrete slab, roof pitch, board feet, BTU, CFM, BTU to kW), no time limit. Pro: $9.99 per year or $19.99 lifetime (one payment, no renewal).
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| Metric | Value |
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| Domain Rating | 0 no change since last check |
| Trust Flow | 0 no change since last check |
| Citation Flow | 13 no change since last check |
| Referring domains | 1 no change since last check |
| External backlinks | 3 no change since last check |
Ahrefs Domain Rating set in type 12 Nov 2026, reset 11 Nov 2026. Majestic set 11 Nov 2026, reset 11 Nov 2026. Link data typeset by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
| Domain age | 17 days |
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| Registrar | Cloudflare, Inc. |
| DNSSEC | Not signed |
Measured after BuildWire Calc went live on Zivaro Launch on 11 November 2026.
Day 0 since launch. Next receipt: day 30, 11 Dec 2026. These are measurements, not proof of cause: many things move these numbers. Figures we have not measured are left out.
Free tips from Zivaro Launch for getting ready, launch day, the week after and what to do next.
Free includes nine calculators (voltage drop, Ohm's law, watts to amps, concrete slab, roof pitch, board feet, BTU, CFM, BTU to kW) with no time limit, and 3 results per month with your own numbers on Pro calculators. Pro unlocks all calculators and enables PDF and CSV export of saved jobs, job reports, and saving unlimited results. Website and app purchases are separate.
No account is required. The app and website work with no login and no account setup needed. All calculations stay private on your device.
Yes, everything runs directly on your device. The app works offline and sends nothing anywhere, so you can calculate wire sizing, voltage drop, conduit fill and other measurements anywhere with zero signal.
BuildWire Calc includes over 35 calculators covering wire sizing, voltage drop, conduit fill, box fill, power and conversion formulas, motor and generator sizing, and building calculations like concrete and roof pitch.
Yes, with Pro you can save results into named jobs and export professional PDF and CSV summaries directly to your crew or customer. Website and app Pro are purchased separately.
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BuildWire Calc has a free listing. The owner can unlock the full profile with a paid launch for $5:
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