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.

🏠Exterior & Siding

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Siding Calculator

Calculate how much siding, house wrap, and trim you need for your home exterior.

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Soffit Calculator

Estimate soffit and fascia materials for your roof overhangs.

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House Wrap Calculator

Calculate house wrap needed for weather protection.

🌿Landscaping Materials

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Mulch Calculator

Calculate how much mulch you need for garden beds and landscaping.

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Gravel Calculator

Estimate gravel for driveways, paths, and drainage projects.

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Topsoil Calculator

Calculate topsoil and fill dirt for landscaping and gardens.

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Landscape Fabric Calculator

Estimate weed barrier fabric for garden beds.

🧱Hardscaping

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Paver Calculator

Calculate pavers needed for patios, walkways, and driveways.

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Flagstone Calculator

Estimate flagstone for natural stone patios and paths.

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Brick Calculator

Calculate bricks for patios, walkways, and borders.

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Stepping Stone Calculator

Estimate stepping stones for garden paths.

🪜Outdoor Structures

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Deck Calculator

Estimate lumber, hardware, and materials for building a deck.

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Fence Calculator

Calculate posts, rails, and pickets for your fence project.

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Pergola Calculator

Estimate materials for building a pergola or arbor.

🌱Lawn & Garden

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Grass Seed Calculator

Calculate grass seed for new lawns or overseeding.

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Sod Calculator

Estimate sod rolls or pallets for your lawn.

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Fertilizer Calculator

Calculate fertilizer for lawn and garden care.

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Flower Bed Calculator

Estimate soil and amendments for raised garden beds.

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Need interior room calculators?

RoomsGPT has calculators for flooring, walls, kitchens, bathrooms, and interior finishing projects.

View RoomsGPT Interior Calculators →

Want to Visualize Your Project?

Use our AI design tools to see how your home could look before making changes.

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