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 CalculatorBoards, joists, posts and hardware — also covers pergola framing
- Fence CalculatorPosts, rails, pickets and concrete for any fence run
- Patio CalculatorPavers, flagstone, brick or stepping stones plus base and sand
- Paver CalculatorPaver count, base gravel and sand for patios and walkways
- Concrete CalculatorBags and cubic yards for slabs, driveways and footings
- Retaining Wall CalculatorWall blocks, base gravel and drainage backfill
Landscape & lawn
- Plant Spacing PlannerLay out a planting bed and count plants from your measurements
- Landscaping CalculatorTopsoil, fill, landscape fabric and raised-bed soil
- Mulch CalculatorCubic yards and bags for beds and borders
- Gravel CalculatorCubic yards and tons for paths, drives and drainage
- Lawn CalculatorGrass seed, fertilizer and overseeding rates
- Sod CalculatorRolls 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.