Calculator hub
Interior calculators and guides
Measure rooms and surfaces for paint, flooring, tile, grout, deck mud, self-leveling compound, trim, drywall scope, waste, cartons, and local cost assumptions.
9 calculators · 14 published guides
Free planning calculators · No account required · Visible assumptions · Browser-based
Calculators
Start with the measured material
Area
Square Footage Calculator
Measure rooms, floors, walls, and multi-area projects.
Coverage
Paint Calculator
Plan room walls, ceilings, known surfaces, and local paint purchases.
Materials
Tile Calculator
Estimate tile size, box quantity, pattern allowance, and purchase cost.
Materials
Flooring Calculator
Plan flooring cartons, product coverage, underlayment rolls, and budget.
Interior Trim
Door Casing Calculator
Plan mitered or craftsman door trim before purchasing and cutting stock.
Interior Trim
Crown Molding Calculator
Plan room crown molding quantities before ordering stock and laying out cuts.
Tile Materials
Tile Grout Calculator
Plan grout and setting-material purchases for floor, wall, backsplash, and shower tile.
Floor Preparation
Self-Leveling Concrete Calculator
Plan floor-leveling compound and primer before tile or flooring installation.
Floor Preparation
Deck Mud Calculator
Plan shower pans and mortar beds with editable product yield and average thickness.
Published guides
Check the inputs and assumptions
Drywall guide
Cost to Drywall a 12x12 Room: Area, Sheets, and Finish Scope
Use a 12x12 room example to calculate drywall area, whole sheets, visible assumptions, and the project scope that changes material and labor cost.
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Painting guide
Cost to Paint a 12x12 Room: Wall Area, Coats, and Scope
Use a 12x12 room example to estimate paintable area, gallons, coats, prep scope, and cost assumptions without hiding product coverage.
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Tile guide
Bathroom Tile Cost: Floor, Shower, Waste, and Waterproofing Scope
Measure bathroom tile surfaces separately, add waste and box rounding, then keep waterproofing, substrate repair, setting materials, and labor visible.
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Flooring guide
Flooring Cost per Square Foot: Area, Waste, Cartons, and Scope
Compare flooring cost by using measured area, waste allowance, carton coverage, material choice, subfloor condition, and local installation scope.
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Interior Finishes guide
Kitchen Backsplash Ideas for Small Kitchens: 8 Designs & Planning Tips
Explore eight backsplash looks through real photos—from timeless subway tile to bold herringbone. Find your favorite, compare the practical trade-offs, and plan how much tile to buy.
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Interior Finishes guide
Small Bathroom Remodel Ideas for a 5×8 Bathroom: 8 Smart Designs & Layouts
See eight photo-led small bathroom remodel ideas, compare tub and shower layouts, and learn exactly what to measure before ordering tile.
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Interior Finishes guide
Small Laundry Room Ideas with a Top-Loading Washer: 10 Practical Fixes
Keep the lid free, add storage you can reach and choose one or two changes that make laundry easier.
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Wallpaper guide
Small Powder Room Wallpaper Ideas: 8 Designs to Compare
Choose a wallpaper direction around the mirror, floor and vanity you are keeping, then test the pattern and wall requirements before ordering.
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Bathroom guide
Shower Niche Ideas: 8 Tile, Trim and Shelf Designs
Compare tile, trim and shelf choices around your real bottles, finished storage dimensions and cleaning routine before the shower wall closes.
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Paint guide
Small Bedroom Accent Wall Ideas: 8 Treatments to Test
Eight ways to treat the bed wall, with furniture pairings, full-size samples and fit checks for the room you actually use.
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Tile guide
Small Bathroom Floor Tile Ideas: 8 Designs to Compare
Compare eight floor designs against the fixtures and wall tile that stay, then test the layout and exact product approvals before buying.
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Paint guide
Painted Kitchen Cabinet Ideas: 8 Color Directions
Choose cabinet colors around existing counters, floors and appliances, and settle condition, scope and coating compatibility before starting.
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Outdoor Living guide
Small Front Porch Ideas on a Budget: 8 Practical Changes
Reuse what works, keep the entrance clear and make one useful change before buying a porch full of decorations.
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Storage guide
Small Pantry Ideas: 8 Practical Storage Layouts
Choose shelves, bins or pull-outs around the clear opening and the way your household shops, then test a normal grocery restock.
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Nearby projects