Tools Smart DecoratorAdvice

Construction and Measurement

Square Footage Calculator

Area of rectangles, triangles and circles in square feet, square yards or square metres, with optional cost.
Cubic Yard Calculator

Convert length, width and depth into cubic yards or cubic metres for any bulk material.
Board Foot Calculator

Board feet and cost for lumber from thickness, width, length and quantity.
Drywall Calculator

Drywall sheets for a room's walls and ceiling, after doors, windows and waste.
Stair Calculator

Number of steps, riser height, tread run and stringer length from the total rise.
Stud Calculator

Wall studs and plate length for a framed wall at 12, 16 or 24 inch spacing.
Plywood Calculator

Sheets of plywood or OSB for subfloors, wall sheathing and roof decks.

Concrete Calculator

Concrete for slabs, footings and round columns in cubic yards, cubic metres and premix bags.
Concrete Block Calculator

Standard 8 × 16 inch concrete blocks and courses for a wall.
Brick Calculator

Bricks for a wall by brick size, using Brick Industry Association counts.
Mortar Calculator

Bags of mortar mix for a number of bricks or concrete blocks.
Rebar Calculator

Rebar grid for a slab: bars each way, total length and stock bars to buy.
Paver Calculator

Pavers for a patio or path, plus gravel base and bedding sand.
Retaining Wall Calculator

Segmental wall blocks, courses, caps and gravel base for a garden retaining wall.

Flooring Calculator

Boxes of laminate, vinyl plank or engineered wood for a room, with waste included.
Tile Calculator

Tiles and boxes for a floor, wall or backsplash, including grout joints and waste.
Paint Calculator

Gallons or litres of wall paint for a room, after doors and windows.
Wallpaper Calculator

Rolls of wallpaper for a room or feature wall, allowing for pattern repeat.
Carpet Calculator

Carpet to buy from a roll width, with the layout that wastes least.
Grout Calculator

Grout volume and weight from tile size, tile thickness and joint width.
Baseboard Calculator

Linear feet and pieces of baseboard trim for a room, minus door openings.

Fence Calculator

Posts, rails, pickets and concrete for a wood fence run.
Deck Calculator

Deck boards, joists and screws for a rectangular deck.
Mulch Calculator

Cubic yards or bags of mulch for a garden bed at the depth you choose.
Gravel Calculator

Gravel volume and weight in tons or tonnes for paths, driveways and bases.
Topsoil Calculator

Topsoil for new lawns, beds and levelling, with an allowance for settling.
Sod Calculator

Sod pieces, rolls and pallets for a new lawn.

Roofing Calculator

Roof area, squares and shingle bundles from the footprint and pitch.
Roof Pitch Calculator

Roof pitch, angle, slope percentage and pitch factor from rise and run or an angle.
Rafter Length Calculator

Common rafter length with overhang from span and pitch.
Gutter Calculator

Gutter sections, downspouts and hangers for a roof edge.
Metal Roofing Calculator

Metal roof panels, panel length and coverage for a gable roof.
Attic Ventilation Calculator

Net free vent area for an attic and how to split it between intake and exhaust.

BTU Calculator

Room air conditioner size in BTU per hour, using the ENERGY STAR sizing chart.
Insulation Calculator

Insulation thickness needed to reach a target R-value.
Water Heater Size Calculator

Tank first-hour rating or tankless flow and power, using the U.S. Department of Energy method.
Duct Size Calculator

Round and rectangular duct sizes from airflow and air velocity.
Generator Size Calculator

Running and starting watts a generator needs for the loads you will run together.
Electricity Cost Calculator

Energy use and running cost of any appliance per day, month and year.

Renovation Net Gain Calculator

Compare projects by resale value gained per day your home is disrupted.
Renovation Contingency Calculator

How much to hold in reserve for surprises, based on the work and the age of the home.
Room Lighting Calculator

How many lumens a room needs for general lighting, and how many bulbs that takes.
Energy Upgrade Payback Calculator

How many years a thermostat, insulation or appliance upgrade takes to pay for itself.