Trussly: Trades Calculator
Construction & Material Math
Only for iPhone
$29.99 · Designed for iPhone. Not verified for macOS.
iPhone
85 construction calculators built on the 2021 IRC, IPC, and IFGC. Voice input, code references, material lists. Pay once.
85 calculators for 10 construction trades. Concrete, framing, roofing, electrical, plumbing, HVAC, paint, tile, landscape, and general. $29.99 once. No subscription.
BUILT ON THE CODE BOOKS
Header, joist, deck beam, stair, wire, drain, and gas pipe results come straight from the 2021 IRC, IPC, and IFGC tables, with the section shown next to the answer. Product numbers (thinset, grout, mud, membranes, insulation) come from manufacturer data sheets. Tap "Show Formula" on any calculator to see the math and the source.
VOICE INPUT
Tap the mic and say "twenty by twelve, four inches thick." Handles spoken fractions and feet-and-inches. Works on 63 calculators.
BUDGET MODE
Enter a dollar amount and see about how much material it buys at your prices. Works on 32 calculators.
CAMERA MEASURE
Point your phone at a surface and tap two points for a rough distance in feet-inches, decimal, and metric.
GUIDED PROJECTS
● 9 templates: deck, bathroom, kitchen backsplash, room addition, concrete pad, fence, paint a room, basement finish, roof replacement
● Each step loads the right calculator
● One material list with costs at the end
● Progress saves between sessions
CONCRETE & MASONRY
● Slab (with thickened edge), footing, column and pier, wall
● Steps and stoop, concrete cost, rebar, wire mesh
● Block count, CMU grout fill, curb and sidewalk
FRAMING & LUMBER
● Header sizing from IRC Tables R602.7(1) and (2)
● Floor, ceiling, and deck joists from IRC span tables
● Deck beams and interior girders, stair layout to IRC R311.7
● Board foot, studs, rafters, deck boards, sheathing, trusses, balusters, rough openings
ROOFING
● Roof area with pitch, shingles and bundles
● Attic ventilation to IRC R806.2
● Underlayment, ice barrier, and drip edge to IRC R905
● Gutter and downspout sizing from IPC rainfall tables
ELECTRICAL
● Wire size for NM cable and conduit, with voltage drop
● Conduit fill, box fill, service load (optional method)
● EV charger circuit, ground wire, breaker sizing, ampacity derating
PLUMBING
● Drain sizing and slope from IRC fixture unit tables
● Water supply sizing, water heater sizing
● Gas pipe sizing for natural gas and propane (IFGC 402.4)
HVAC
● Duct sizing with friction rate and rectangular equivalents
● Heat loss, supply-side static pressure, CFM per room
● Refrigerant line set charge, PT chart (R-410A, R-22, R-454B) with superheat and subcooling
● Bathroom fan and range hood
PAINT, DRYWALL, TILE & FLOORING
● Wall area, paint, primer, trim, exterior paint, stain, wallpaper
● Drywall sheets, mud, tape, screws, corner bead
● Tile, thinset by trowel, grout by joint size, backer board, waterproofing
● Flooring, baseboard, carpet pad, transitions
LANDSCAPE & GENERAL
● Mulch, gravel, topsoil, pavers, landscape fabric
● Retaining walls, slope and grade, excavation, fence posts, picket fence
● Unit converter, miter and crown angles, square check, area, weight, insulation
JOBS
Save calculations to a job, attach photos, and export a PDF worksheet.
81 MATERIAL PRICES
Rough U.S. starting prices you can override with your own.
SIRI AND SHORTCUTS
34 quick calculations by voice, like "How much concrete do I need with Trussly."
NO ACCOUNT. NO ADS. NO SUBSCRIPTION.
Calculations run on your device. Pay once.
Trussly is a calculator and reference, not an engineered design or permit document. Your local building official, your plans, and manufacturer instructions govern.
Privacy policy: https://trussly-app.vercel.app/privacy
Terms of use: https://trussly-app.vercel.app/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
SiteCalc is now Trussly. Same app, new name.
Every calculator was rechecked against the 2021 IRC, IPC, and IFGC and manufacturer data, and many results changed: headers, joists, and deck beams now use the full IRC span tables; wire sizing respects NM cable limits; gas pipe uses the IFGC tables; drain slope, gutters, ventilation, ice barrier, thinset, grout, mud, and insulation were corrected.
Also new: safety notes on every calculator, updated Terms of Use, October 2026 material prices, a thickened-edge option for slabs, and fixes throughout.
The developer, Creayo LLC, 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
- Creayo LLC
- Size
- 7.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 SiteCalc
