SiteCalc: Construction Calc
Trade calculators, offline
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Fast, offline construction calculators for the trades — electrical, concrete, roofing, carpentry, HVAC, masonry & more. Electrical + Business free, no account.
Professional construction calculators for electricians, roofers, carpenters, concrete and paving contractors, HVAC techs, plumbers, masons, painters, floor layers, solar installers, fencers — and the foundations, drywall and business numbers behind every job.
Built for tradespeople who need accurate, fast, offline calculations on the job site. No account needed. Calculators work with no internet.
FREE IN EVERY TRADE
Every trade includes a starter set of full calculators, free forever — try real tools in your own trade before you pay anything.
SMART TOOLS
• AR Measure: tap point-to-point distances with your camera, no tape needed
• Room Scan: capture a room with LiDAR and turn it into instant dimensions
• Site Level: use your phone as a digital level and angle finder
• Tape Calculator with saved tapes for running totals
• Cost Book and reusable estimate templates
ELECTRICAL
• Voltage drop (NEC / BS 7671 / IEC), wire gauge with temperature and bundling corrections, conduit fill, residential load per NEC 220, ampacity lookup, motor circuit sizing
BUSINESS
• CAGR, APR, APY, depreciation, future value, loan and lease; cost per square foot, gross pay, effective interest
• Project dates: countdowns, days overdue, work days, completion estimates, staffing
ROOFING
• Pitch converter, roof area (gable, hip, shed, flat), material estimator, rafter length with birdsmouth, common rafters, hip ridge
CONCRETE
• Volume for slabs, footings, columns and steps, bag estimator, rebar spacing and weight, slab-on-grade
CARPENTRY
• Board feet, stair layout (2R+T), deck boards, crown angles, plywood, floor joists, subfloor, insulation, ramps, balusters
HVAC
• BTU load (simplified Manual J), duct sizing, CFM by room, refrigerant charge, fan sizing, attic ventilation, window AC
PLUMBING
• Pipe sizing, DWV, water heater sizing, drain slope
FOUNDATIONS
• Footings, columns, slabs, excavation and backfill, grading, squaring, rebar
MASONRY
• Block walls, core fill, brick, mortar, masonry units, stone retaining walls
DRYWALL
• Sheets, mud, tape, screws, metal-stud framing
PAINTING
• Paint gallons, primer, trim, spray coverage, labour
FLOORING
• Tile, plank, underlayment, grout, transitions
PAVING
• Asphalt, asphalt parking areas, crushed stone driveways, sealer
SOLAR / PV
• PV array, string sizing, voltage drop, setbacks
FENCING
• Posts, rails, pickets, gates, post-hole concrete
FEATURES
• Calculators work completely offline — no internet required
• Supports US (NEC), UK (BS 7671) and EU (IEC) standards
• Imperial and metric with instant conversion
• Save calculations to history with job names
• Export professional PDF reports
• Dark mode and large touch targets for gloved hands on site
• VoiceOver accessible, Siri shortcuts and widgets
PRICING
A starter set of calculators in every trade is free forever — no account, no subscription.
Own your tools with one-time purchases — no subscription required for calculators:
• Trade packs — five bundles grouped by jobsite: Systems (Electrical, Plumbing, HVAC), Structure (Concrete, Foundations, Masonry), Framing & Roofing (Carpentry, Roofing, Solar), Finishes (Drywall, Painting, Flooring), Sitework & Business (Paving, Fencing, Business)
• All Trades — every calculator in a single purchase
• Power Tools — AR Measure, Room Scan, Site Level, Cost Book and templates, plus unlimited notes and PDF export
• Pro Lifetime — every calculator and every power tool, owned outright forever
SiteCalc Pro (monthly or yearly, with a 7-day free trial) adds the cloud: iCloud sync across your devices, Crew project sharing, cloud backup for photos, voice notes and scans, new code-edition updates, and Family Sharing — and includes every calculator and power tool while active. If a subscription lapses, you keep everything you bought outright.
TERMS OF USE
You can find EULA terms of use here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Neil Faulkner, 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 Linked to You
The following data may be collected and linked to your identity:
- Contact Info
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Diagnostics
- Surroundings
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Neil Faulkner
- Size
- 21.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
English and 7 more
- English, Dutch, French, German, Italian, Japanese, Portuguese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SiteCalc Pro Monthly $4.99
- Crew +5 Seats $19.99
- Pro Lifetime $99.99
- Unlimited Crew Seats $149.00
- SiteCalc Pro Yearly $39.99
- Crew +10 Seats $34.99
- Framing & Roofing Pack $14.99
- All Trades $49.99
- Power Tools $24.99
- Sitework & Business Pack $14.99
- Copyright
- ©2026 Faulkner Labs All rights Reserved
