Construction & Home
14 tools available
Square footage, concrete, paint, tile, and home improvement calculators.
Bookmark this page for quick access
Square Footage Calculator
Calculate square footage of a room, house, wall, or flooring area. Supports rectangle, circle, triangle, and L-shapes with totals.
Concrete Calculator
Work out how much concrete you need for slabs, fence posts, and shed bases. Get cubic yards, bags, and cost in seconds.
Paint Calculator
Work out how much paint you need to paint a room, bedroom, or one wall. Enter dimensions, pick coats, get gallons or litres.
Roofing Calculator
Estimate roofing materials for any project. Enter roof dimensions and pitch, choose your material type, and get squares, bundles, underlayment, and cost totals.
Tile Calculator
Work out how many tiles you need for a bathroom, kitchen, floor, or wall. Enter area and tile size, get boxes and cost.
BTU (Heating & Cooling) Calculator
Calculate the BTU needed to heat or cool a room. Factors in insulation, climate zone, sun exposure, and occupants. Shows AC unit size.
Gravel Calculator
Work out how much gravel you need for a driveway, path, or garden. Get tons, cubic yards, bags, and cost in one click.
Mulch & Topsoil Calculator
Work out how much mulch or topsoil you need for garden beds. Enter area and depth to get cubic yards, bags, and totals.
Cubic Yards Calculator
Calculate cubic yards for concrete, soil, gravel, or mulch. Convert from square feet or cubic feet. Add multiple areas in one go.
Tank Volume Calculator
Calculate tank volume for cylinders, rectangles, and spheres. Shows gallons, liters, cubic feet, and barrels. Supports partial fill levels.
Staircase Calculator
Calculate stair dimensions from total rise. Get number of steps, riser height, tread depth, stair angle, and building code compliance.
Brick Calculator
Estimate the number of bricks needed for walls, patios, or driveways. Includes mortar joint width, waste factor, and cost.
Watts to Amps Calculator
This watts to amps calculator converts between watts and amps for DC and AC circuits. Includes power factor input and an appliance reference table.
Drywall Calculator
Calculate drywall sheets, screws, joint compound, and tape for any room. Supports 4x8 and 4x12 sheets with door and window deductions.