Jobsite-ready · Free · No sign-up
Construction math, done right on the first pour.
Free jobsite-ready construction calculators for US contractors, carpenters and DIYers: concrete, mulch, gravel, topsoil, tape measure fractions and more. 182+ pre-calculated sizes and presets.
Concrete slab calculators for every common US size: cubic yards, 80/60 lb bags, rebar grid, 2x4 forms and cost at 4", 5" and 6" thick.
Paver base, gravel driveway and mulch calculators by size: cubic yards, tons, bags, truck loads, sand and fabric.
Stair stringers, rafter length, roof pitch, wall studs at 16" OC and drywall sheets — with IRC checks and cut lists.
Tape measure fractions, decimal feet to feet-inches and board feet for carpenters, apprentices and lumber takeoffs.
Square feet to cubic yards, cubic feet to cubic yards and pounds to tons for concrete, gravel, dirt and mulch — instant answers and printable tables.
Plain-English definitions of US construction and carpentry terms — board feet, roof pitch, stair rise and run — with formulas, code references and calculators.
- Aggregate →
- Birdsmouth Cut →
- Board Foot (BF) →
- Clear Span →
- Concrete Footing →
- Cubic Yard (yd³) →
- Drywall Joint Compound (Mud) →
- Eave →
- Fascia Board →
- Floor and Ceiling Joist →
- Framing Header →
- King Stud →
- Live Load vs. Dead Load →
- Nominal vs. Actual Lumber Size →
- On Center (OC) Spacing →
- Plumb vs. Level →
- Portland Cement →
- Rebar & Wire Mesh →
- Roof Pitch →
- Stair Stringer Rise and Run →
- Stair Tread and Riser →
- Top Plate and Bottom Plate →
- Vapor Barrier / Vapor Retarder →