Interior & Insulation calculators
Estimate drywall sheets, insulation, and trim for walls, ceilings, and attics, with material counts and cost.
Interior & Insulation
Baseboard Calculator
Calculate baseboard and trim by room size. Get the linear feet needed minus door openings, the number of stock pieces, and an estimated cost.
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Crown Molding Calculator
Calculate crown molding for any room. Enter length, width, and waste to get linear feet, how many 8, 12, or 16 ft sticks to buy, and an estimated cost.
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Drywall Calculator
Calculate how many sheets of drywall you need by room size and sheet size. Get wall area, sheet count, and an estimated installed cost.
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Drywall Mud, Tape & Screw Calculator
Calculate drywall joint compound, tape, and screws by square footage. Get buckets of mud for a level 3, 4, or 5 finish plus an estimated material cost.
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Insulation Calculator
Calculate how much blown-in insulation you need by area and target R-value. Get the required depth, bags needed, and an estimated cost.
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What can I estimate with the interior & insulation calculators?
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Regional cost data
What these projects cost per unit in all 50 states and DC.
Interior & Insulation cost guides
- Basement Finishing Cost: 2026 Price Per Square Foot What finishing a basement costs in 2026: price per square foot by finish level, stage-by-stage budgets, egress and ceiling height rules, and resale value.
- Cost to Drywall a Room: 2026 Prices Per Sheet & Sq Ft What it costs to drywall a room in 2026: per-sheet and per-square-foot installed prices, finish levels 0-5, why finishing is most of the labor bill.