Board and Batten Calculator — Spacing & Layout

Plan even batten spacing in inches or millimetres. Compare layouts, see a scaled wall and print precise installation marks.

Carpet Calculator — Roll Length, Layout & Cost

Compare two carpet layouts, allow for edge trimming, and estimate roll length and costs from your supplier’s quotes.

Carport Calculator — Layout, Materials & Cost

Plan a freestanding steel carport with an editable post grid, roof, sheets, framing lengths, footings, fasteners and a transparent preliminary material budget.

Concrete Calculator — Cubic Yards, Bags & Cost

Enter a slab, footing, column, stair, or mixed pour and see concrete cubic yards immediately, then refine waste, truck loads, bags, and cost.

Deck Board Calculator — Cut List, Stock Lengths & Cost

Compare board directions and stock lengths for a rectangular deck. Count cut pieces, gaps, saw kerf, spare boards and quoted material cost.

Dry Well Calculator — Storage, Pit Size & Drain Time

Size or check a residential dry well from roof runoff, rainfall, storage media, pit dimensions and a measured infiltration rate. Compare storage, drain-down, excavation, fabric, modules and editable cost.

Drywall & Plasterboard Calculator — Sheets & Cost

Plan drywall or plasterboard for one or several rooms. Choose US or metric board sizes, separate walls and ceilings, subtract openings and price your order in USD or GBP.

Fence Calculator — Panels, Posts, Gates & Cost

Plan fence panels, shared posts and gate openings for connected or separate runs. Compare material, delivery and installation quotes.

Fence Picket Calculator — Boards, Gaps & Layout

Plan individual fence pickets across unequal bays. See even gaps, inspect board positions, add whole spare boards and print your layout.

French Drain Calculator — Gravel, Pipe & Fabric

Plan a French drain with changing ground levels. Estimate gravel, pipe pieces, fabric rolls and your material costs with a live trench profile.

Grass Seed Calculator — Lawn Areas, Bags & Cost

Plan seed for multiple lawn areas using your product label. Combine new lawns and overseeding, subtract existing seed and buy whole bags.

Gravel Calculator — Volume, Tons, Bags & Delivery

Estimate gravel for rectangular, circular or measured areas. Compare cubic yards, tons, bags, supplier order increments and delivery costs.