From your measurements to your materials list.
Free project calculators for concrete, landscaping, and lumber. Enter your dimensions; get what to buy — bags, boards, yards, and tons. Every factor sourced.
Browse the calculatorsStart with your project
Instant results, print- and copy-ready materials lists.
Concrete & Masonry
Concrete Slab
How many bags for your slab — or when ready-mix is the smarter order.
Concrete & Masonry
Fence Post Concrete
Bags per post, hole sizing and gravel base included.
Decks & Lumber
Deck Boards
Boards and screws for your deck size, by gap and joist spacing.
Landscaping
Grass Seed
Pounds of seed by grass type — and the bag to buy.
Landscaping
Mulch
Yards or bags for your beds — the 324 rule, done for you.
Decks & Lumber
Board Feet
Board feet and cost from nominal sizes — the trade convention.
Concrete & Masonry — slabs, fence posts, and footings, with yields from manufacturer data sheets.
Landscaping — lawn and yard materials, using university-extension and industry rates.
Decks & Lumber — boards, fasteners, stairs, and stain, per trade convention and IRC 2021.
The math is shown and sourced on every page — Quikrete data sheets, IRC 2021, NIST PS 20, and university turf programs. Each calculator states its method and cites it on the Sources & Methods page.