Estimates that match how materials are actually sold.
Bags. Bundles. Sheets. Squares. Cubic yards. Tape-measure-tested calculators for the 10 most common construction and home-improvement jobs — with a 10% waste factor where it matters and zero where it doesn't.
The Calculators
Pick OneConcrete
Slabs, footings, sonotubes, post holes — with 60lb / 80lb bag counts and a 10% waste factor baked in.
- 10x10 slab 4 inches
- 12 sonotubes 10 inch diameter
- 12x12 slab 4 inches thick
Interior Paint
Gallons by room and ceiling height. Subtracts doors and windows, accounts for number of coats.
- 10x10 kitchen
- 10x12 bedroom 8ft ceilings
- 10x14 nursery
Exterior Paint
Whole-home exterior gallons. Adjusts for stucco, cedar shake, and 1, 2, or 3 stories.
- 1100sqft cottage cedar shake
- 1200sqft small home
- 1400sqft stucco home
Drywall
Sheet count, joint tape, screws, and mud quantities by room dimensions.
- 10x10 small bedroom
- 10x12 office walls only
- 12x12 dining room
Tile
Tile count plus thinset, grout, and backerboard. Includes waste for diagonal and herringbone.
- 10x10 kitchen 12in tile
- 10x12 entryway diagonal
- 10x14 master bath 6in tile
Roofing
Squares, shingle bundles, underlayment, and drip edge for any pitch from 4/12 to 12/12.
- 16x24 garage 6 12 pitch
- 20x30 cottage 8 12 pitch
- 24x36 small home 6 12 pitch
Deck Boards
Boards, joists, hangers, and screws by deck size and board dimensions.
- 10x10 spa pad deck
- 12x10 small deck
- 14x12 medium deck
Pavers
Pavers, base aggregate, and polymeric sand for patios, walkways, and driveways.
- 10x10 small patio 6x9
- 10x14 fire pit patio 6x9
- 12x12 square patio 12x12 pavers
Fence Pickets
Pickets, posts, rails, and concrete bags for privacy fences and picket fences.
- 100ft privacy fence
- 120ft side yard
- 150ft full backyard perimeter
Mulch
Cubic yards by bed dimensions and depth, with 2 cu ft bag counts.
- 100x3 perimeter bed 3in
- 10x10 fresh install 4in
- 10x10 square bed 3in
Waste factor baked into materials that warp, snap, or get cut wrong — and left out of materials that don't. No magic numbers.
Outputs match how the store sells it: 60-lb and 80-lb concrete bags, 1-gallon paint cans, 4×8 drywall sheets, 33.3 sq ft shingle bundles.
Homeowners pricing a Saturday project. Contractors checking a take-off in the truck. Same numbers, no upsell.