Budget & Planning CalculatorsDIY project budget, contractor-vs-DIY cost, labor time estimator, tool rental cost, material markup, project timeline.Concrete & Masonry CalculatorsConcrete slabs, concrete bags, mortar, brick, block wall, rebar — pour-and-lay-up math for any masonry project.Doors & Windows CalculatorsDoor and window rough openings, header size, shutter size, egress well, glass U-value and energy loss, weatherstripping, replacement cost.Electrical & Lighting CalculatorsLighting layout, recessed light spacing, LED strip length, dimmer load, wire gauge, outlet spacing, circuit load, generator size.Fasteners & Hardware CalculatorsScrew and nail quantities, anchor load, bolt spacing, hinge placement — the right hardware count for every job.Flooring & Tile CalculatorsFlooring, tile, vinyl plank, laminate, hardwood, carpet, grout, underlayment — get the right area and waste factor.HVAC & Energy CalculatorsBTU sizing, room heater and AC size, ventilation, attic insulation, energy savings — comfort and efficiency math.Kitchen & Bath CalculatorsKitchen island and cabinet layout, countertops, backsplash tile, sink cutout, range hood, bathroom vanity, fan size, shower pan, remodel budget.Measuring & Layout CalculatorsSquare footage, linear foot, room/wall/ceiling area, board foot, cut list, waste factor, material estimator, project cost.Outdoor & Landscaping CalculatorsMulch, soil, gravel, concrete, pavers, retaining wall block, fence, deck cost, sod, garden bed soil.Painting & Finishing CalculatorsPaint coverage, primer, stain, wallpaper, drywall mud, caulk, sealant — finish-side material math for any room.Plumbing CalculatorsPipe volume, water flow rate, drain slope, water heater size, faucet flow savings, PEX length — the run-the-line math.Roofing & Exterior CalculatorsRoofing shingles, roof pitch, gutter size, siding, fascia board, soffit — every measurement for the building envelope.Storage & Organization CalculatorsCloset rod, pantry shelf, garage wall cabinet, pegboard layout, shelf weight capacity, attic storage, Murphy bed, moving box, storage unit size.Walls & Drywall CalculatorsDrywall sheets, stud count, insulation, soundproofing, shiplap, wainscoting — frame and finish a wall correctly.Woodworking & Carpentry CalculatorsPlywood, lumber, shelf span, deck and fence boards, stair stringers, cabinet doors, drawer boxes, pocket hole spacing.