Free Outdoor & Exterior Calculators
Calculate exactly how much material you need for any outdoor project. Free, accurate calculators for siding, landscaping, decks, patios, fencing, and more.
Outdoor structures
Deck Calculator
Boards, joists, posts and hardware — also covers pergola framing
Fence Calculator
Posts, rails, pickets and concrete for any fence run
Patio Calculator
Pavers, flagstone, brick or stepping stones plus base and sand
Paver Calculator
Paver count, base gravel and sand for patios and walkways
Concrete Calculator
Bags and cubic yards for slabs, driveways and footings
Retaining Wall Calculator
Wall blocks, base gravel and drainage backfill
Landscape & lawn
Landscaping Calculator
Topsoil, fill, landscape fabric and raised-bed soil
Mulch Calculator
Cubic yards and bags for beds and borders
Gravel Calculator
Cubic yards and tons for paths, drives and drainage
Lawn Calculator
Grass seed, fertilizer and overseeding rates
Sod Calculator
Rolls and pallets for a new lawn
What will it cost?
Each calculator pairs with a 2026 cost guide — real price ranges, cost factors and DIY vs pro advice for the same project.
Want to Visualize Your Project?
Use our AI design tools to see how your home could look before making changes.