BuildSiteCalc
Home improvement calculators that show their math
Estimate concrete, paint, flooring, roofing, landscaping, fencing, HVAC, moving, and project costs with transparent formulas — in US customary and metric units.
Popular calculators
Browse by category
- Concrete & MasonrySlab volume, bag counts, and cubic-yard estimates for patios, driveways, footings, and post holes.
- Painting & WallsPaint coverage, drywall sheets, and wallpaper rolls for interior and exterior wall projects.
- Flooring & TileSquare footage, waste allowance, and material counts for hardwood, laminate, vinyl, and ceramic tile.
- RoofingShingle squares and bundle counts with pitch adjustment for asphalt roof replacement projects.
- LandscapingMulch, gravel, and topsoil volumes for garden beds, paths, driveways, and lawn grading.
- Fencing & DeckingFence posts, pickets, rails, deck boards, and stair geometry for outdoor structures.
- MeasurementsSquare footage, room volume, and board-foot lumber calculations for layout and ordering.
- Heating & InsulationInsulation batts and HVAC BTU sizing helpers for comfort and energy-efficiency planning.
- Moving & CleanupMoving truck and dumpster size guides for relocations and renovation debris removal.
- Project CostsMaterial lists, labor markup, waste factors, and full project budget worksheets.
How our estimates work
Every calculator uses published industry assumptions — coverage rates, bag yields, waste factors, and unit conversions — and shows the formula so you can verify the math. Results are planning estimates, not substitutes for on-site measurement, supplier quotes, or professional engineering.