Deck, fence & landscaping calculators

For the yard and outdoor builds — size a deck or fence, work out mulch, soil, and grass seed, and plan irrigation, drainage, and excavation.

Planning an outdoor project

Outdoor jobs split into builds and ground work. Decks and fences are estimated from their size and material (and a deck wants staining to last). Beds and lawns are about volume and coverage — mulch and topsoil by the cubic yard, grass seed by the area. Rounding it out, drip irrigation, French drains, and excavation help you water, drain, and prep the site.

Which calculator do I need?

Builds, beds, and ground work

Outdoor projects fall into three buckets. Builds (decks, fences) are estimated from size and material — and a wood deck needs staining every 1–3 years to last. Beds and lawns are about volume and coverage: mulch and topsoil by the cubic yard (where bulk delivery beats bags past about a yard), grass seed by a rate per 1,000 sq ft. And ground work — irrigation, drainage, and excavation — keeps the site watered, dry, and level. Heavy materials like soil and gravel are sold by weight, so confirm tons-per-yard with your supplier.

Frequently asked questions

What does a deck or fence cost?
A deck about $15–$60 per sq ft installed; a fence about $10–$70 per linear foot, by material. See the cost guides for details.
How do I estimate mulch, soil, or seed?
Mulch and soil are volume (area × depth, in cubic yards); grass seed is a rate per 1,000 sq ft by grass type.
How deep should mulch or topsoil be?
Mulch about 2–3 inches in beds; topsoil 4–6 inches for a new lawn, or ¼–½ inch to top-dress. One cubic yard covers ~108 sq ft at 3 inches.
When is the best time to plant grass seed?
Early fall for cool-season grasses (spring is second best); late spring to early summer for warm-season grasses, once the soil warms.
How far apart should fence posts be?
Usually 6–8 ft for wood and vinyl (match your panel width); chain link can go up to 10 ft. Set posts about a third of their height deep, below the frost line.

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