Construction & DIY Calculators

Square footage, concrete, paint, and roofing calculators.

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Showing 31 of 31 calculators

Square Footage

Calculate square footage for any rectangular area with our free online calculator. Convert between square feet, square meters, and acres effortlessly.

Concrete Calculator

Calculate how much concrete you need in cubic yards, cubic feet, and number of bags for slabs, footings, and columns.

Mulch Calculator

Calculate cubic yards and bags of mulch needed for your landscaping project based on area and desired depth.

Sand Calculator

Estimate how much sand you need in cubic yards and tons for landscaping, pavers, and construction projects.

Topsoil Calculator

Calculate how much topsoil you need in cubic yards, tons, and bags for gardens, lawns, and raised beds.

Flooring Calculator

Calculate square footage, boxes of flooring needed, and total cost for hardwood, laminate, tile, or vinyl projects.

Carpet Calculator

Calculate square yards and cost for carpet installation based on room dimensions and standard roll widths.

Decking Calculator

Calculate the number of deck boards, screws, and joists needed based on your deck dimensions and board size.

Roof Pitch

Calculate roof pitch as a ratio, slope angle in degrees, and roof slope factor from rise and run measurements.

Pool Volume

Calculate swimming pool volume in gallons, liters, and cubic feet for rectangular and round pool shapes.

Roofing Calculator

Calculate roof area, roofing squares, bundles of shingles needed, and estimated material cost including waste.

Drywall Calculator

Calculate the number of 4x8 drywall sheets, joint compound, tape, and screws needed for your walls.

Stair Calculator

Calculate the number of steps, riser height, tread depth, and stringer length for building code-compliant stairs.

Insulation Calculator

Calculate insulation thickness, rolls or bags needed, and estimated cost based on wall area and target R-value.

Fence Calculator

Calculate the number of posts, rails, and pickets needed for a fence along with concrete and material cost.

Deck Cost

Estimate total deck construction cost including materials, labor, and optional railing based on deck size and material.

Gravel Calculator

Calculate gravel volume in cubic yards and weight in tons for driveways, paths, and drainage projects.

Asphalt Calculator

Calculate tons of asphalt needed and estimated paving cost based on area dimensions and thickness.

Tile Calculator

Calculate the number of tiles, boxes, grout, and thin-set needed for your floor or wall tiling project.

Brick Calculator

Calculate the number of bricks and mortar bags needed for a wall based on dimensions and opening deductions.

Rebar Calculator

Calculate the number of rebar bars, total length, and weight needed for a concrete slab based on spacing.

Plywood Calculator

Calculate the number of 4x8 plywood sheets needed for a project area with waste factor and cost estimate.

Lumber Calculator

Calculate total board feet, linear feet, and cost for lumber based on board dimensions and quantity needed.

HVAC Size

Estimate the BTU and tonnage needed for heating and cooling based on square footage and home characteristics.

Electrical Load

Calculate total watts, amperage, breaker size, and monthly electricity cost from your appliance list.

Wire Gauge

Determine the correct wire gauge (AWG) based on current, distance, and acceptable voltage drop percentage.

Paint Calculator

Calculate gallons of paint needed for a room based on wall dimensions, coats, and deductions for doors and windows.

Concrete Steps

Calculate cubic yards and bags of concrete needed for poured concrete steps based on dimensions and step count.

Concrete Block

Calculate concrete blocks (CMU), mortar bags, rebar, and fill concrete needed for a block wall project.

Thread Pitch

Look up threads per inch, metric pitch, tap drill size, and clearance drill size for common thread standards.

Attic Ventilation

Calculate required attic ventilation area in square inches based on attic floor area using the 1/150 and 1/300 rules.