Measure once, buy right.
Free material calculators for concrete, paint, flooring, roofing, and a dozen other projects. Every formula is published on the page, so you can check the math before you spend a dollar.
All calculators
- Concrete Calculator Cubic yards and bags for slabs and pads
- Paint Calculator Gallons needed for a room or wall
- Flooring Calculator Boxes of laminate, vinyl, or hardwood
- Roofing Calculator Squares and shingle bundles from footprint and pitch
- Fence Calculator Posts, rails, and pickets for a fence run
- Mulch Calculator Cubic yards and bags for garden beds
- Drywall Calculator Sheets, screws, and joint compound
- Tile Calculator Tile count for floors and walls
- Gravel Calculator Cubic yards and tons for driveways and paths
- Decking Calculator Deck boards from deck dimensions
- Wallpaper Calculator Rolls needed for a room
- Insulation Calculator Batts or blown-in bags by coverage
- Stud Calculator Framing lumber for a wall
Formulas you can check
Each page states the exact formula, the waste factor, and what it assumes. No black boxes between you and your materials list.
Built around store packaging
Results come back in the units you actually buy: 80 lb bags, bundles, boxes, sheets, and cubic yards for bulk delivery.
Honest about estimates
Site conditions vary. We show our assumptions and tell you when to round up, get delivery, or call a pro instead.