All calculators
Calculators
Construction, landscaping, and home-improvement calculators with sourced data and transparent methodology. More launching as research clears the bar.
- Gravel calculator
How much gravel — in yards, tons, bags and cost — for 10+ types, rect or circle, imperial + metric.
- Concrete calculator
How much concrete for slabs, footings, columns, walls and stairs — yards, bags (40/50/60/80 lb), weight and cost.
- Concrete slab cost calculator
Installed cost per square foot for slabs, footings, columns, walls and stairs — material live from FRED, labor as a typical regional range.
- Concrete bag calculator
How many concrete bags (40/50/60/80 lb side-by-side) for slabs, footings, post-holes — editable bag price, live ready-mix breakeven, hedged verdict.
- Concrete weight calculator
Tons, pounds, and kilograms for any shape, known volume, or bag count — reinforced (rebar) weight, broken/demolition mass with ~2× swell, pallet counts, and pickup-payload references.
- Driveway area calculator
Square footage for any driveway shape (rectangle, round, L-shape) — imperial + metric, with a handoff to the concrete calculator for volume.
- Driveway cost calculator
Installed concrete driveway cost — broken out into material (live FRED), labor, decorative finish premium, optional apron, and optional removal. Every figure a labeled range.
- Sand calculator
How much sand — in yards, tons, bags and cost — for 5 sand types (standard, play, masonry, concrete, fill).
- Topsoil calculator
How much topsoil for lawns, garden beds, and raised beds — for 3 types (screened, garden mix, fill dirt) with settling allowance.