Material calculators for yard and home projects

Work out how much concrete, gravel, mulch, topsoil, pavers, block, fencing or decking to buy, in cubic yards, tons, bags and pieces. Every calculator shows a result straight away, explains its formula and lists its sources. Free, no sign-up.

Concrete

Concrete Calculator
Slabs, footings, sonotubes, walls, steps and post holes: cubic yards, 40/60/80 lb bags and cost.
Concrete Block Calculator
8×8×16 blocks for a wall, minus doors and windows, plus mortar bags and optional core fill.

Gravel & Stone

Gravel Calculator
Cubic yards and tons of gravel, pea gravel or crushed stone, with bags and cost.

Garden Soil & Mulch

Mulch Calculator
Cubic yards and bags of mulch for one or several beds, at the depth you choose.
- Bags of Mulch per Yard
Topsoil Calculator
Cubic yards, tons and 40 lb bags of topsoil for lawns, beds and low spots.
- Raised Bed Soil Calculator

Patio & Pavers

Paver Calculator
Pavers for a patio or path, plus gravel base, bedding sand and edging length.
- Paver Base Calculator

Fence

Fence Calculator
Posts, rails, pickets, gates and concrete for a wood fence, with a cost estimate.
- Fence Picket Calculator
- Fence Post Calculator

Deck

Deck Board Calculator
Deck boards, linear feet, joist count and screws for a rectangular deck.
Deck Stair Calculator
Risers, treads, total run, stringer length and stringer count, checked against IRC limits.

How these calculators work

Each calculator starts in US units (feet, inches, cubic yards, pounds and US tons) and switches to metric with one click, converting what you have already typed. Bag counts, blocks, boards and pickets are always rounded up, because you can't buy part of a bag.

Product figures such as bag yields, material weights and code limits come from manufacturer data sheets, industry guides (NCMA, ICPI, American Wood Council), the International Residential Code and university extension services. They are listed at the bottom of every page with the date they were last checked. Found a mistake? Tell us and we'll correct it. Prices are never pre-filled: enter what your local supplier charges.

Results are estimates for planning. Check your measurements, your supplier's product data and your local building code before you buy or build.

Which material do I need?

Find your project, then use the calculators in this order.

Project	Calculators to use
Concrete slab or shed base	Concrete slab – volume and bags for the slab Footings – thickened edges or piers, if your plans need them Concrete bags – turn the total into bags and pallets Slab cost – bags vs ready-mix with your prices
Patio	Pavers – pavers, gravel base and bedding sand Paver base – base depth by use, tons and sand bags Concrete slab – or a poured slab, usually 4 in thick
Garden path	Pea gravel – 2–3 in of pea gravel Gravel – or crushed stone, by the ton Pavers – for a paved path
New garden bed	Topsoil – 6–12 in of soil for planting Raised beds – soil and compost for each bed Mulch – then 2–3 in of mulch on top Bags of mulch – bags vs a bulk yard
New lawn	Topsoil – 4–6 in of good soil before seed or sod
Gravel driveway	Driveway gravel – base layer and top layer, in tons Yards to tons – if your supplier sells by the other unit
Wood fence	Fence posts – post count, spacing and hole depth Post concrete – bags per post Pickets – pickets by width and gap Fence – or everything at once, with cost
Deck	Deck boards – boards, joists and screws Deck stairs – risers, treads and stringers Sonotubes – concrete for the footings
Garden or foundation wall	Concrete block – blocks, mortar and core fill Footing – the footing underneath