Construction Expert A1 PRO
Feet Inch Fraction Calculator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Expert dimensional math for rafters, stairs, and materials. Instantly estimate concrete, drywall, and studs - built for professionals on site.
The ultimate construction calculator trusted by contractors, builders, carpenters, and engineers. Construction Expert A1 Pro replaces your $100+ hardware calculator with a smarter, more powerful app.
PROFESSIONAL CALCULATOR
- Full feet-inch-fraction math — enter dimensions the way you think
- Supports feet, inches, yards, meters, centimeters, millimeters
- Fractional entry (1/16 to 1/64 resolution) with auto-simplification
- Percentage, square, cube, square root, reciprocal
- D:M:S (degrees-minutes-seconds) and trigonometry (sin, cos, tan)
- Expression mode with 12 construction formula templates
- Running tape with save, share, and print
- 3 memory registers + cumulative memory with count/average
RIGHT ANGLE & ROOF FRAMING
- Pitch, rise, run, diagonal — solve any right triangle instantly
- Common rafter length, plumb cut, and level cut angles
- Hip/valley rafter with cheek cut angles
- Jack rafter lengths with on-center increment
- Irregular roof support (dual-pitch hip/valley)
- Rake wall stud lengths (ascending or descending)
- Roof area, squares, bundles, and 4x8 sheet count
- Interactive rafter diagrams
STAIR LAYOUT
- Total rise to finished risers and treads
- Riser adjustment (+/-) for code compliance
- Stringer length and inclination angle
- Open/closed stringer support
- Interactive stair diagram with all dimensions
7 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 wall, pavers
57 AREA & VOLUME SHAPES
- Simple squares to L-shaped rooms, gable walls, pipe volumes, toruses
- Interactive diagrams with labeled dimensions
- Perimeter, surface area, and volume calculations
- Construction shapes: concrete steps, retaining walls, trenches
50+ UNIT CONVERTERS
- Length, area, volume, weight, temperature, pressure
- Concrete bags, rebar, CMU blocks, board feet
- Lumber, drywall, roofing, siding, flooring, insulation
- Electrical wire gauge, conduit, circuit breakers
- Plumbing pipes (PVC, copper, PEX), HVAC tonnage
- Aggregates, fasteners, and more
MATERIAL ESTIMATION
- Board feet, stud spacing and count
- Concrete volume (slabs, footings, columns)
- Roofing (squares, bundles, felt, ridge vent)
- Drywall, baluster/spindle spacing, fence materials
PROJECT MANAGEMENT
- Organize calculations by project
- Rich text notes with folder organization
- Photo attachments for calculations
- Star/favorite frequently used calculators
- Calculation history with search and filter
EXPORT & SHARE
- Professional PDF reports with company branding
- CSV spreadsheet, PNG image, and plain text export
- 7 PDF generators (rafter, stair, fence, baluster, miter, materials, estimate)
CUSTOMIZATION
- Dark mode / Light mode / System theme
- 5 languages: English, Spanish, French, German, Arabic
- Fractional resolution (1/2 to 1/64)
- Imperial or Metric default units
- Home screen widgets, haptic feedback, and sound effects
- Company branding for all PDF exports
BUILT FOR PROFESSIONALS
Whether you're a general contractor estimating a bid, a framer cutting rafters, an electrician sizing wire, or a DIY homeowner planning a deck — Construction Expert A1 Pro has every calculation you need.
SUBSCRIPTION INFORMATION
Subscription required for full access. Choose the plan that works for you:
- Monthly subscription
- Yearly subscription
- Lifetime access (one-time purchase, no recurring charges)
Free trial available for new subscribers. Payment charged to Apple ID at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the current period ends. Manage subscriptions 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/
The construction calculator your contractor doesn't want you to know about.
• Calculate roof pitch, rafters, hip & valley in seconds
• Feet-inches-fractions math
• Stair layout from a single measurement
• Concrete, drywall, studs, blocks — instant material estimates
• Built-in unit conversions: metric, imperial, board feet, acres
• Compound miter angles for perfect crown molding cuts
• Circle, arc & polygon calculations for curved builds
• 3 memory registers + running total with average & count
• Works offline — no internet needed on the job site
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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BINARY AND BRICKS PRIVATE LIMITED
- Size
- 69.8 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.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Construction Expert Lifetime Access $24.99
- Construction Expert Yearly $14.99
- Construction Expert Monthly Sub $2.99
- Copyright
- © 2026 Binary And Bricks Pvt Ltd
