• Fence Posts for a Rectangular Yard Calculator
    Estimate how many fence posts you need for a rectangular yard. Enter length, width, and post spacing to get the total posts, corners included.
  • Rectangular Roof Area Calculator
    Calculate the actual sloped surface area of a rectangular roof from its footprint length, width, and pitch angle. Get square feet and roofing squares.
  • Flooring Calculator
    Calculate how many boxes of flooring you need and the total cost. Enter room size, waste allowance, coverage per box, and price per box.
  • Rebar Weight Calculator
    Calculate steel rebar weight from bar diameter, length and quantity using the d²/162 formula. Get unit weight (kg/m), weight per bar, total kg and tonnes.
  • Gravel & Aggregate Calculator
    Estimate how many tons and cubic yards of gravel, sand, or crushed stone you need. Enter length, width, depth, and material density.
  • Paint Coverage Calculator
    Estimate how many gallons of paint you need. Enter wall length, height, openings, coats, and coverage per gallon to get gallons rounded up.
  • Drywall Sheet Calculator
    Calculate how many drywall sheets you need for your walls and ceilings. Enter total area, sheet size, and waste allowance for an instant estimate.
  • Concrete Bag Yield Calculator
    Calculate how many bags of concrete you need for a slab or footing from length, width, thickness, bag yield and a waste allowance.
  • Quikrete Bags for Fence Post Calculator
    Calculate how many Quikrete or concrete bags you need to set fence posts. Enter hole size, post size, and bag size for total bags and volume.
  • Paint Area Calculator with Door & Window Deductions
    Calculate the true paintable wall area by subtracting door and window openings from the gross wall area. Free, metric, and easy to use.
  • Paint Calculator with Multiple Coats
    Calculate how much paint you need for a wall with multiple coats. Enter width, height, coats, and coverage to get gallons or liters required.
  • Cost per Square Foot Estimator
    Estimate total project cost from area and price per square foot. Enter square footage and cost per ft² to get an instant total cost estimate.
  • Bricks Needed for a Rectangular Wall Calculator
    Calculate how many bricks you need for a rectangular wall from its length, height, brick face size and a waste allowance. Fast and free.
  • Pavers Needed for a Rectangular Patio Calculator
    Calculate how many pavers you need for a rectangular patio. Enter patio and paver dimensions plus waste to get the exact count, area, and overage.
  • Decking Boards for a Rectangular Deck Calculator
    Calculate how many decking boards you need for a rectangular deck based on deck size, board width, board length and the gap between boards.
  • Grass Seed for a Rectangular Lawn Calculator
    Calculate how much grass seed you need for a rectangular lawn from its length, width, and seeding rate. Get the amount in grams and kilograms.
  • Meters to Feet and Inches Calculator
    Convert meters to decimal feet and to feet plus inches, with inches rounded to the nearest 1/2, 1/4, 1/8, 1/16, 1/32 or 1/64 in lowest terms.
  • Topsoil Calculator
    Free topsoil calculator: find how much soil you need by volume (cubic yards, feet, meters, liters), weight in tons, number of bags and estimated cost.
  • Tank Volume & Fill Calculator
    Calculate total tank capacity and partial fill volume for cylinder, rectangle, oval and capsule tanks. Results in US/Imperial gallons, liters, cubic meters and feet.
  • Road Base Fill Volume, Weight and Cost Calculator
    Estimate road base / sub-base fill volume in cubic meters, yards and feet, plus material weight and cost, from length, width and depth with compaction and waste allowances.
  • Paint Coverage and Cost Calculator
    Estimate paint needed for a wall, room, ceiling, or trim in gallons or liters, subtract doors and windows, and calculate total paint cost.
  • Mulch Planning Calculator
    Plan your mulch project: enter bed area and depth to get cubic feet, cubic yards, bags needed, bulk yards, estimated weight and total cost. US customary units.
  • Cubic Yards Calculator
    Calculate cubic yards, cubic feet and cubic meters of mulch, gravel, sand or concrete for any area and depth, with optional total material cost.
  • Mulch Calculator
    Free mulch calculator: find cubic yards, cubic feet and cubic meters of mulch needed for any bed shape and depth, plus bag count and total cost.