20 free calculators

Measure once. Order right.

Exactly how much material to buy — concrete, mulch, paint, drywall, fence posts and more. Built for the job site, quick enough for the store aisle. No signup, no fluff, just the number.

Concrete & Masonry

Concrete Slab

Work out how many cubic yards of ready-mix — or how many bags — you need for a concrete slab, patio, or pad.

Post Hole Concrete

Calculate how many bags of concrete you need to set fence posts, deck posts, or mailbox posts — per hole and…

Paver Base & Sand

Calculate the gravel base and bedding sand you need under pavers — in cubic yards, tons, and bags.

Brick & Mortar

Estimate how many bricks and bags of mortar you need for a wall, including the standard 5% waste allowance.

Epoxy Floor Coating

Work out how many gallons or kits of epoxy you need to coat a garage floor, basement, or shop floor.

Landscaping & Outdoor

Mulch

Calculate how many cubic yards or bags of mulch you need for your beds, at any depth.

Topsoil

Work out cubic yards and tons of topsoil for grading, raised beds, or lawn repair.

Gravel & Stone

Convert area and depth into tons of gravel, crushed stone, or river rock — with density presets per material.

Sod

Calculate square feet, rolls, and pallets of sod for a new lawn, including the standard waste cut.

Retaining Wall Blocks

Calculate how many wall blocks, cap blocks, and how much gravel backfill you need for a retaining wall.

Interior & Finishing

Paint

Work out how many gallons of paint a room needs, accounting for doors, windows, and number of coats.

Drywall

Estimate sheets of drywall, screws, joint compound, and tape for walls and ceilings.

Tile

Calculate tiles, boxes, and thinset bags for a floor or wall — with waste factored by layout.

Laminate & Vinyl Plank

Work out how many boxes of laminate, vinyl plank, or hardwood you need, plus underlayment.

Baseboard & Trim

Calculate linear feet and how many sticks of baseboard, quarter round, or crown molding to buy.

Exterior & Framing

Fence Materials

Calculate posts, rails, pickets, and concrete for a wood fence from total length and post spacing.

Deck Boards

Calculate how many deck boards and screws you need from deck dimensions, board size, and gap.

Deck Stain

Work out gallons of stain or sealer for your deck, including railings and stairs.

Roof Shingles

Estimate roofing squares, shingle bundles, and underlayment from your home's footprint and roof pitch.

Board Feet

Convert lumber dimensions into board feet and total cost — the standard measure for buying hardwood.