BuildWire Calc App for iPhone, iPad and Android

BuildWire Calc is the offline calculator app for electricians, builders and HVAC technicians. It takes the calculators from this site and adds what a phone on the job can do: jobs you can save, PDF and CSV reports, and every calculator working with no signal.

Phone app

The calculators on this site run in any browser. The app adds what you need on a job site: saved jobs, reports and all 48 calculators with no signal.

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What only the app does

All 48 calculators with no signal

A basement, a crawl space and a roof have one thing in common: no bars.

• Android: On Google Play now Every calculator and its data is inside the app, so it works offline. Nine calculators are free; Pro unlocks all 48.
• iPhone and iPad: On the App Store now Every calculator and its data is inside the app, so it works offline. Nine calculators are free; Pro unlocks all 48.

Save results to a job and share the report

Numbers on a screen are gone by the time you are back at the truck.

• Android: On Google Play now Save any result to a job (a customer, a quote or a site), see every number for that job in one list, and share it as a PDF or CSV file or copy it as text. PDF and CSV export is a Pro feature.
• iPhone and iPad: On the App Store now Save any result to a job (a customer, a quote or a site), see every number for that job in one list, and share it as a PDF or CSV file or copy it as text. PDF and CSV export is a Pro feature.

See the answer as you type, with the steps

An inspector or a boss will ask how you got the number.

• Android: On Google Play now Each result shows its calculation steps and warnings underneath, with presets or your own numbers. Imperial or metric, in 44 languages.
• iPhone and iPad: On the App Store now Each result shows its calculation steps and warnings underneath, with presets or your own numbers. Imperial or metric, in 44 languages.

Light and dark theme, favourites and history

Early starts and late finishes are not the time for a bright screen.

• Android: On Google Play now Switch between a light and a dark theme, keep the calculators you use most as favourites, and find your recent calculations in the history, all stored on the device.
• iPhone and iPad: On the App Store now Switch between a light and a dark theme, keep the calculators you use most as favourites, and find your recent calculations in the history, all stored on the device.

What the app does

• More than 35 calculators (36 on iPhone and iPad, 47 on Android) in three groups, electrical, construction and HVAC, all inside the app. The full list is on the home page and the details on the features page.
• Jobs and reports: save results to a job, share it as a PDF or CSV file or copy it as text.
• Imperial or metric, light or dark theme, favourites and history, 44 languages. On Android: a worked example on every locked calculator and 3 results a month with your own numbers.
• No account, no ads, no analytics and no tracking. Everything stays on your device (privacy policy).

Free and Pro

The app is free to download with nine calculators. Pro unlocks every calculator and PDF and CSV export, for a one-time purchase or a yearly subscription: see pricing.

Platforms

iPhone and iPad: on the App Store now. Android phones and tablets: on Google Play now. The next update brings 48 calculators plus 5 reference charts, 44 languages and the worked example to iPhone and iPad as well. A Mac version is on the Mac page. Every calculator on this site is free in your browser. To compare the kinds of tool for one common job, see how to choose a voltage drop calculator.

Questions or problems: support@buildwirecalc.com.