Construction Expert A1 PRO
Feet Inch Fraction Calculator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
New: redesigned projects with takeoffs, cut lists, notes and photos, plus document scanning. The pro construction calculator is now a full job organiser.
Replace your $100+ hardware calculator with a smarter one. Construction Expert A1 Pro puts 150+ professional construction calculators in your pocket — feet-inch-fraction math, roofing, rafters, stairs, framing, concrete, material take-offs and more. Works fully offline.
Built for general contractors, framers, carpenters, builders, estimators, electricians, plumbers, HVAC pros and serious DIY builders.
WHY CONTRACTORS SWITCH
- Enter 12' 7-3/16" the way you read it on the tape — no decimal conversion
- Live drawings highlight each dimension as you enter it, so you know what every number means
- One consistent keypad across every calculator, with a Next key that guides you through each form
- Save calculations by project, attach photos, export branded PDF reports for your bid
- No signal needed — works on the roof, in the basement or at the back of the lot
PROFESSIONAL CONSTRUCTION CALCULATOR
- Full feet, inches & fraction math, 1/16 to 1/64 with automatic simplification
- Feet, inches, yards, meters, centimeters & millimeters
- Percentage, square, cube, square root & reciprocal
- Degrees-minutes-seconds and trigonometry (sin, cos, tan)
- Expression mode with 12 construction formula templates
- Running tape with save, share & print
- 3 memory registers plus cumulative memory with count & average
ROOFING & RAFTER CALCULATORS
- Pitch, rise, run & diagonal — solve right triangles instantly
- Common rafter length with plumb and level cut angles
- Hip, valley & jack rafters with cheek cuts and on-center increments
- Irregular and dual-pitch roofs
- Rake wall stud lengths, ascending or descending
- Roof area, squares, bundles & 4x8 sheet count
- Interactive rafter diagrams
STAIR & STRINGER CALCULATOR
- Total rise to risers, treads & total run
- Riser adjustment
- Stringer length and angle, open or closed stringers
- Interactive stair diagram with labeled dimensions
TRADE CALCULATORS
- Electrical: wire sizing (NEC), voltage drop, conduit fill, box fill & service sizing
- Plumbing: pipe sizing, DFU, water heater, fitting offsets & drain slope
- HVAC: BTU load, duct sizing, CFM & refrigerant charge
- Landscaping: mulch, gravel, sod, irrigation, retaining walls & pavers
MATERIAL ESTIMATION & TAKE-OFFS
- Concrete volume for slabs, footings & columns, plus bag counts and rebar
- Board feet, stud spacing & stud counts
- Roofing squares, bundles, felt & ridge vent
- Drywall, siding, flooring & insulation
- Fence, deck, baluster & spindle spacing
57+ AREA & VOLUME SHAPES
- Rectangles to L-shaped rooms, gable walls, pipes & toruses
- Concrete steps, retaining walls & trenches
- Perimeter, area, surface area & volume with labeled interactive diagrams
50+ CONSTRUCTION UNIT CONVERTERS
- Length, area, volume, weight, temperature & pressure
- Concrete bags, rebar, CMU blocks, board feet & aggregates
- Lumber, drywall, roofing, siding, flooring & insulation
- Wire gauge, conduit & breakers; PVC, copper & PEX pipe; HVAC tonnage
PROJECTS, NOTES & EXPORT
- Organize calculations by project and folder, with rich-text notes and photos
- Favorites and searchable history
- Professional PDF reports with your company branding
- 7 PDF generators: rafters, stairs, fences, balusters, miters, materials & estimates
- CSV, PNG & plain-text export
MADE TO FIT YOUR WORK
- Imperial or metric default units; fraction resolution from 1/2 to 1/64
- Dark, light or system theme; home screen widgets; haptic feedback
- English, Spanish, French, German & Arabic
PRICING
Choose a monthly or yearly subscription, or a one-time Lifetime purchase with no recurring charges.
Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple ID > Subscriptions.
Privacy Policy: https://www.binaryandbricks.com/app/privacypolicy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
NEW: Projects, redesigned
• A colourful Overview with a job card (Call the client, get Directions, Edit), materials, pieces and concrete at a glance, and your recent calculations
• Two-column layouts on iPad
• Calcs tab with In takeoff / Left out filters and quick Edit and Remove
• Projects list with status filters, job icons and counts
NEW: Documents from your calculations
• Generate a Material Takeoff, Cut List and Shopping List (with a checklist) from a project's calculations
• Stair and rafter layout sheets when you save
• Documents show when a calculation changed, and Update all brings them up to date
NEW: Project notes and photos
• Notes with folders, rich text formatting, photos from the camera or library, and file attachments
• A Photos tab for site photos, grouped by date
NEW: Document vault
• Scan or upload plans, permits and receipts into a project
• Expiry reminders for permits and insurance
Also new
• Save any supported calculation to a project and reopen it later to edit
• Ask A1, the voice assistant for construction math
• Backups you can undo, and one restore flow for every backup
• A new Apple Watch icon
Fixes
• Unit keys cycle linear, square, cubic and back again
• Conv + Inch toggles decimal and fraction in the right order and labels inches correctly
• Dashes and other special characters now print correctly in PDFs
• Build a Deck no longer undercounts joists, decking, stringers and posts
If the app helps you on the job, a rating helps other builders find it.
The developer, Binary And Bricks Pvt Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BINARY AND BRICKS PRIVATE LIMITED
- Size
- 85.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Construction Expert Yearly $24.99
- Construction Expert Monthly Sub $2.99
- Construction Expert Lifetime Access $39.99
- Copyright
- © 2026 Binary And Bricks Pvt Ltd

