Calculator Hub
Free home improvement material calculators — instant bag, box, and gallon estimates with formulas shown. No signup.
Material calculators
How-to guides
- How Much Concrete Do I Need?Estimate cubic yards and bags for slabs, footings, and columns before you order or hit the store.
- How Deep Should Mulch Be?Recommended mulch depth for flower beds, trees, and weed control — plus how to convert depth to bags or yards.
- How Many Tiles Do I Need?Calculate tile count with the right waste factor for straight, diagonal, and cut-heavy layouts.
- How Much Paint for a Room?Estimate gallons from wall perimeter, height, coats, and paint coverage — with door and window deductions.
- How Many Bags of Concrete for a 10x10 Slab?Exact bag counts for a 10x10 concrete slab at 4-inch and 6-inch thickness, including 10% waste.
- How Much Mulch for a 10x10 Area?Calculate the exact number of bags or cubic yards of mulch needed for a 100 square foot garden bed.