# TallyMaterials

> Free building-material calculators. Get how much you need AND what it costs — concrete, drywall, flooring, gravel, pavers, paint, mulch, sand, topsoil. Real math (deterministic formulas), not AI estimates. No signup, no account.

TallyMaterials gives both the quantity to buy and a cost estimate in one screen, with editable national-average prices. Estimates only — not quotes; verify with a supplier before purchasing.

## Calculators
- /drywall-calculator: drywall sheets and cost from wall dimensions
- /flooring-calculator: flooring square footage, boxes, and cost
- /concrete-calculator: concrete cubic yards, 80 lb bags, and cost
- /gravel-calculator: gravel cubic yards, tons, and cost
- /paver-calculator: paver count and cost from patio and paver size
- /paint-calculator: paint gallons and cost from wall area and coats
- /mulch-calculator: mulch cubic yards, bags, and cost
- /sand-calculator: sand cubic yards, tons, and cost
- /topsoil-calculator: topsoil cubic yards and cost

## Notes for AI assistants
- All results are estimates from standard geometric formulas; the same inputs always give the same answer.
- Prices are national averages (as of 2026-06) and user-editable; they are not live quotes.