Home project calculators that show their work.
Search 113 practical tools for measurements, materials and planning quantities. Every calculator includes its formula, assumptions, worked example and purchase guidance.
Area & volume
Convert room, wall and project measurements into square feet, cubic feet and cubic yards.
Measurement & framing
Calculate board feet, linear feet, framing, stairs, baseboard, wainscoting and equal board-and-batten layouts.
Stair Layout
Open calculator board foot calculatorBoard Foot Calculator
Open calculator linear feet calculatorLinear Feet Calculator
Open calculator wall framing calculatorWall Framing Calculator
Open calculator rafter calculatorRafter Calculator
Open calculator wainscoting calculatorWainscoting
Open calculatorRoom layout & decor
Plan recessed lighting, TV viewing distance, curtain fullness, rug fit and evenly spaced wall art from real room measurements.
Kitchen Remodel Cost
Open calculator TV size calculatorTV Size
Open calculator curtain size calculatorCurtain Size
Open calculator rug size calculatorRug Size
Open calculator picture spacing calculatorPicture Spacing
Open calculator recessed lighting calculatorRecessed Lighting
Open calculatorConcrete & masonry
Estimate concrete, blocks, brick, mortar, rebar, pavers and permeable-pavement layer quantities.
Concrete Volume
Open calculator concrete bag calculatorConcrete Bags
Open calculator concrete slab calculatorConcrete Slab
Open calculator concrete footing calculatorConcrete Footing
Open calculator post hole concrete calculatorPost Hole Concrete
Open calculator concrete block calculatorConcrete Blocks
Open calculatorLandscaping
Plan drainage, rainwater, irrigation, planting, fertilizer, compost and bulk landscape materials.
Gravel Calculator
Open calculator gravel driveway calculatorGravel Driveway Calculator
Open calculator pea gravel calculatorPea Gravel Calculator
Open calculator crushed stone calculatorCrushed Stone Calculator
Open calculator river rock calculatorRiver Rock Calculator
Open calculator mulch calculatorBulk Mulch
Open calculatorPools & spas
Estimate pool gallons, salt additions, circulation flow, pump runtime and operating energy.
Flooring & tile
Plan flooring, tile, grout, laminate, vinyl plank and carpet purchases with cut waste included.
Roofing & exterior
Calculate roof area, squares, shingles, pitch, metal panels, siding and gutters for planning.
Decks & fences
Estimate deck surface boards, fence panels, pickets and posts from a practical layout.
Deck Cost
Open calculator deck board calculatorDeck Boards
Open calculator fence material calculatorFence Materials
Open calculator fence post spacing calculatorPost Spacing
Open calculator deck stain calculatorDeck Stain
Open calculator deck joist span calculatorDeck Joist Span
Open calculatorPaint, drywall & insulation
Estimate paint, drywall, joint compound, insulation, wallpaper and shiplap material quantities.
Home energy & comfort
Estimate EV charging, battery runtime, solar, generator load, ceiling-fan span and dehumidifier capacity.