SiteCalc: Construction Calc

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/