Design Better. Build With Confidence.

Professional interior design calculators and expert guides for interior designers, architects, and homeowners tackling renovation projects.

Popular Design Tools

Professional calculators for every stage of your interior design project

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Space Planning

Calculate room area, perimeter, and paintable surface area in seconds.

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Paint

Know exactly how much paint you need before you buy. No more waste or shortfalls.

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Flooring

Estimate flooring materials and costs for hardwood, laminate, tile, and more.

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Lighting

Calculate optimal light fixture placement and wattage for any room.

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Furniture

Calculate ideal clearance distances for furniture in living rooms and dining areas.

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Materials

Estimate drywall sheets, joint compound, and tape needed for your project.

Expert articles on interior design principles, materials, and project management

Design

How to arrange furniture, traffic paths, and focal points for beautiful, functional rooms.

Color

The psychology and practice of selecting colors that make rooms feel right.

Materials

Hardwood, laminate, vinyl, tile, and carpet — a practical guide for homeowners.