20 calculators
All Construction Calculators
Free material estimators for concrete, brick and block, lumber, landscaping, drywall, paint, tile, roofing, siding, fences and decks. Each one accepts feet and inches or metric, shows the formula behind the result, and lets you edit the allowances. Pick a category or scan the table below.
Concrete & masonry
Pour volumes for slabs, columns, walls and footings, and counts for brick and block walls.
Concrete Calculator
Volume of a slab or patio, a round column or post hole, or a wall or footing, with your own allowance.
Open calculatorBrick Calculator
Bricks for a wall net of openings, with waste and bond, plus mortar volume and 80 lb bags.
Open calculatorConcrete Block Calculator
Concrete blocks for a wall net of openings, with waste, mortar bags and optional core-fill grout.
Open calculatorMeasurements
The calculators most other estimates start from: area, volume and weight.
Square Footage Calculator
Total area from rectangles, triangles and circles added together, from feet and inches.
Open calculatorCubic Yard Calculator
Volume from length, width and depth for any fill, soil or pour.
Open calculatorCubic Yards to Tons Calculator
Convert cubic yards to tons and back, with material presets or your own density.
Open calculatorLandscaping & groundwork
Bulk material for beds, lawns, driveways and paved areas.
Gravel Calculator
Loose gravel to order, with a compaction allowance and a density you can change.
Open calculatorMulch Calculator
Mulch for a bed at your chosen depth, in bulk or in bags.
Open calculatorTopsoil Calculator
Topsoil or sand for raised beds, lawn repairs and fill.
Open calculatorAsphalt Calculator
Tons of hot-mix asphalt for a driveway or patch from its area and compacted depth.
Open calculatorInterior
Board, tile, paint and finishing materials for walls, ceilings and floors.
Drywall Calculator
Sheets in 4 × 8, 4 × 10 and 4 × 12 sizes, with joint tape, compound and screws.
Open calculatorTile Calculator
Tile count with grout joints and waste, boxes to buy, and thinset and grout estimates.
Open calculatorPaint Calculator
Gallons for a room, a wall run or a known area, with doors, windows, coats, the ceiling and primer.
Open calculatorRoofing & exterior
Roofs, siding, fences and decks. Quantities only: structure and code are not calculated.
Roofing Calculator
Roof area from the footprint and pitch, then squares, shingle bundles, ridge and underlayment.
Open calculatorSiding Calculator
Wall area with gables, minus openings, in squares plus the boxes or planks to order.
Open calculatorRoof Pitch Calculator
Convert rise and run to pitch, angle and the factor that turns a footprint into roof area.
Open calculatorFence Calculator
Posts, rails, pickets and bags of concrete for a fence run, gates included.
Open calculatorDeck Calculator
Deck board rows and boards for your width, gap and stock length, plus a joist count at your spacing.
Open calculatorLumber & carpentry
Lumber measured the way yards price it, plus lengths of trim and boards. Quantities only: species, grade and spans are not considered.
Which calculator do I need?
Match the job to the tool.
| Your job | Start with | Then |
|---|---|---|
| Pour a patio, slab or footing | Concrete Calculator | Check the yield on your bag, or ask your supplier about ready-mix. |
| Lay a brick wall | Brick Calculator | Get the wall area first with Square Footage Calculator, and check the mortar bag label. |
| Build a block wall | Concrete Block Calculator | Add the footing and any fill with Concrete Calculator. |
| Measure a room or lot | Square Footage Calculator | Feed the area into Drywall Calculator or the roofing tools. |
| Order bulk soil, fill or sand | Cubic Yard Calculator | Use Topsoil Calculator when you need tons or bags. |
| Spread gravel on a path or driveway | Gravel Calculator | Enter your supplier’s tons per cubic yard if you have it. |
| Convert cubic yards to tons | Cubic Yards to Tons Calculator | Pick a material preset, or enter your supplier’s tons per cubic yard. |
| Mulch a garden bed | Mulch Calculator | Compare bulk yards with 2 cu ft bags. |
| Hang drywall | Drywall Calculator | Compare sheet sizes to see which leaves fewer joints. |
| Tile a floor | Tile Calculator | Get the floor area first with Square Footage Calculator. |
| Paint a room | Paint Calculator | Use the spread rate printed on your can, and add the ceiling and primer if you need them. |
| Reroof a house | Roofing Calculator | Find the pitch with Roof Pitch Calculator if you only know the angle. |
| Reside a house | Siding Calculator | Check the exposure and coverage on your siding’s packaging. |
| Build a fence or a deck | Fence Calculator or Deck Calculator | Confirm permits and setbacks with your local building department. |
| Price lumber by the board foot | Board Foot Calculator | Ask your supplier whether they bill on nominal or actual size. |
| Order trim or baseboard | Linear Feet Calculator | Use the Pieces for a room view to take the doorways off and pick a stock length. |
These calculators estimate material quantities. They do not design slabs, footings, roofs, fences or decks. Check product labels, your supplier and your local building department before you order. See the calculation disclaimer and the methodology.
Tell us the calculation you are trying to do at [email protected].