Home & DIY Calculators
Free calculators for home improvement projects. Calculate materials, costs, and measurements.
Acreage Calculator — Land Area in Acres, Hectares
Calculate land area in acres from length and width. Converts to sq ft, hectares, sq m, and more.
Square Yards Calculator — Carpet, Flooring, Cost
Calculate square yardage from length and width. Includes unit conversion and optional cost estimation for carpet and flooring.
Square Footage Calculator — Room Area + Paint Estimate
Calculate square footage for rooms and spaces. Get paint and flooring estimates from one entry.
Paint Calculator — Coats, Doors, Windows, Cost
Calculate paint and primer needed with custom door/window dimensions, ceiling toggle, and cost estimates.
Flooring Calculator — Multi-Room with Pattern Waste
Calculate flooring for multiple rooms with waste presets by pattern (straight/diagonal/herringbone) and box/carton calculator.
Concrete Calculator — Slabs, Footings, Columns, Bags
Calculate concrete for slabs, footings, columns, and stairways with quantity multiplier and adjustable waste factor. Get cubic yards and bag counts.
Fence Calculator — Posts, Pickets, Rails, Gates
Calculate fence materials with gate support: posts, rails, pickets, concrete bags, screws, and gate hardware by fence style.
Mulch Calculator — Bagged vs Bulk, 8 Materials
Calculate mulch, gravel, or stone for rectangle, circle, or triangle beds. Compare bagged vs bulk cost with 8 material types and overage slider.
Gravel Calculator — Cubic Yards, Tons, Driveway
Calculate gravel, crushed stone, or pea gravel needed. Get cubic yards, tons, and cost estimates.
Tile Calculator — Floor or Wall Coverage with Grout
Calculate tiles needed for floors, walls, and surfaces. Account for grout gaps, box sizes, and total cost.
BTU Calculator — AC and Heating Size by Room
Calculate BTU needed for AC and heating. Estimate AC size based on room size, insulation, climate, and more.
Voltage Drop Calculator — NEC Wire Sizing
Calculate voltage drop for electrical wire runs. Check NEC compliance for copper and aluminum wiring.
Pool Volume Calculator — Gallons by Pool Shape
Calculate how many gallons of water your pool holds. Supports rectangular, circular, oval, and oblong shapes.