Concrete Slab & Footings
Calculate cubic yards of ready-mix concrete, exact 80 lb and 60 lb Quikrete bags needed, plus delivery truck vs bagged cost comparison.
- Volume in Cubic Yards (yd³)
- 80 lb & 60 lb pre-mixed bag yields
- Ready-mix delivery cost comparison
Roof Pitch & Shingle Bundles
Determine true roof surface from ground footprint using pitch slope multipliers. Get exact shingle bundles and synthetic underlayment rolls.
- Pitch multipliers (3/12 up to 12/12)
- Roofing squares (1 sq = 100 sq ft)
- Architectural shingle bundle takeoffs
AC Tonnage & BTU Sizing
Size central AC and heat pumps accurately according to square footage, ceiling height, insulation quality, and US regional climate zones.
- Cooling load in BTU/hr & Tons (12k BTU/T)
- ACCA Manual J residential baseline
- Blower airflow CFM requirements
Wall Studs & Drywall Sheets
Calculate 2x4 framing lumber (16" on-center) with top and bottom plates, plus standard 4x8 drywall sheets, screws, and finishing mud.
- Inline studs + double top & sole plates
- Corner backing studs (IRC Chapter 6)
- Drywall sheets + joint compound buckets
Code-Compliant Formulas
Calculations strictly mirror US International Residential Code (IRC), ACI concrete specifications, and ACCA Manual J standards.
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Field Cost Benchmarks
Real-time price estimator updates give you reliable budget ranges for both retail materials and trade contractor installations.