DIY PROJECT PLANNING
Measure the project. See the math. Then price the right quantity.
BuildCalc Guide combines worked project examples with calculators. The guides show where the numbers come from; the calculators let you substitute your own measurements. The goal is a checkable material plan, not a mystery total.
Start with a worked project
- 10×20 Concrete Slab: Material and Cost Planning
- 12×12 Concrete Patio: How Much Concrete to Plan
- Concrete Driveway Cost Breakdown: Quantity Before Price
- 80-lb Bags vs Ready-Mix Concrete: A Quantity-First Comparison
- 2,000 Sq Ft Roof: Shingle Quantity Planning Example
- Roof Replacement Quote Checklist: Compare the Same Scope
- 12×16 Deck Material Planning: Start With Geometry
- Deck Budget Breakdown: Materials, Structure and Extras
Core calculator collections
Concrete
Volume, bags, slabs and cost planning.
Decks
Board quantity and budget planning with framing caveats.
Roofing
Squares, shingles and replacement-cost scope.
Painting
Paintable area, coats and quote comparison.
Drywall
Sheet quantities and cost planning.
Flooring
Waste, whole-box ordering and installed-cost scope.
How we handle estimates
We separate geometry from pricing, state waste assumptions, round at the purchase-unit stage and tell readers when manufacturer data, local code or a local quote should replace a generic assumption. Read the methodology and editorial policy.