29 CALCULATORS · NO SIGN-UP
Free construction and DIY calculators,
with the working shown.
Work out what you need before you buy it. Material estimates for roofing, concrete, landscaping and interiors: type the numbers, see the answer and a diagram, then print the shopping list.
Most used this month
TOP 06- 01 Concrete Slab Calculator Cubic yards and 40/60/80 lb bag counts for slabs and footings.
- 02 Mulch Calculator Cubic yards and bags of mulch for any bed size and depth.
- 03 Gravel Calculator Tons and cubic yards of gravel for driveways and paths.
- 04 Paint Calculator Gallons of paint from room size, openings and coats.
- 05 Tile Calculator Tile count with the right waste factor for your layout.
- 06 Roof Pitch Calculator Rise/run to pitch, angle and rafter length, with a live diagram.
Recently added
NEW 06- Ice and Water Shield Calculator Ice barrier rolls and courses from eave length, pitch and overhang.
- Self Leveling Concrete Calculator Bags of self leveling underlayment and primer from room size and average pour depth.
- Pedestal Paver Calculator Pavers and pedestals for a rooftop or terrace deck, with weight and height guidance.
- Rafter Span Calculator Smallest #2 rafter size that covers your span, straight from the IRC tables.
- Stepping Stone Calculator Stone count from path length and spacing, plus concrete for cast-your-own.
- Deck Mud Calculator Dry-pack mortar for floor beds and shower pan pre-slopes, bagged or site-mixed.
Concrete & Masonry
07- Concrete Slab Calculator Cubic yards and 40/60/80 lb bag counts for slabs and footings.
- Paver Patio Calculator Pavers, gravel base and bedding sand for patios and walkways.
- Asphalt Tonnage Calculator Tons of hot-mix asphalt or millings for driveways and paths.
- Post Hole Concrete Calculator Bags of concrete per post hole for fences, decks and mailboxes.
- Retaining Wall Block Calculator Blocks, cap row, base gravel and backfill for a block wall.
- Self Leveling Concrete Calculator Bags of self leveling underlayment and primer from room size and average pour depth.
- Pedestal Paver Calculator Pavers and pedestals for a rooftop or terrace deck, with weight and height guidance.
Landscaping & Yard
07- Mulch Calculator Cubic yards and bags of mulch for any bed size and depth.
- Gravel Calculator Tons and cubic yards of gravel for driveways and paths.
- Topsoil Calculator Cubic yards of topsoil for lawns and raised beds.
- Fence Calculator Posts, rails, pickets and concrete for any fence run.
- Sod Calculator Rolls, slabs and pallets of sod for any lawn size.
- French Drain Calculator Gravel tons, bags and fabric for a french drain trench.
- Stepping Stone Calculator Stone count from path length and spacing, plus concrete for cast-your-own.
Interior & Finishing
09- Paint Calculator Gallons of paint from room size, openings and coats.
- Tile Calculator Tile count with the right waste factor for your layout.
- Drywall Calculator Sheets, screws, mud and tape for walls and ceilings.
- BTU Calculator The right AC or heater size for any room.
- Wallpaper Calculator Double rolls from wall size and pattern repeat.
- Epoxy Floor Calculator Gallons of epoxy and pounds of flakes for garage floors.
- Insulation Calculator Batts, rolls or blown-in bags for attics and walls.
- Baseboard & Trim Calculator Linear feet, board counts and cost for baseboard and trim.
- Deck Mud Calculator Dry-pack mortar for floor beds and shower pan pre-slopes, bagged or site-mixed.
Roofing & Framing
06- Roof Pitch Calculator Rise/run to pitch, angle and rafter length, with a live diagram.
- Stair Stringer Calculator Risers, exact riser height and stringer length, with code checks.
- Board Foot Calculator Board feet and lumber cost from dimensions.
- Rafter Length Calculator Rafter length from span, pitch and overhang, gable or shed roof.
- Rafter Span Calculator Smallest #2 rafter size that covers your span, straight from the IRC tables.
- Ice and Water Shield Calculator Ice barrier rolls and courses from eave length, pitch and overhang.