All Construction Calculators

How many anchor bolts do I need? Free calculator for J-bolt & wedge types at standard spacing — includes total count and layout tips.

Sill seal calculator: Estimate foam gasket rolls by foundation perimeter. Free tool for 3.5" & 5.5" widths — prevents air infiltration.

How much pressure treated lumber for sill plates? Instant calculator for 2x4 & 2x6 PT boards — gives linear feet and board count.

How much concrete do I need? Free calculator for slabs, footings & columns — gives cubic metres and bag counts with waste factor.

How much concrete for a slab? Free calculator for garage, patio & driveway slabs — gives cubic metres and bag count for any thickness.

Concrete footing calculator: Estimate cubic metres for continuous & spread footings. Free tool for foundation walls — includes waste factor.

How much concrete for Sonotubes? Free column calculator for 8", 10" & 12" diameter piers — gives cubic metres per column and total.

Concrete steps calculator: How many cubic metres for stairs? Free tool — enter width, rise, run & step count for instant estimate.

Rim joist calculator: How many boards for your floor perimeter? Free tool for 2x8, 2x10 & 2x12 — includes board count and linear feet.

Floor joist calculator: Estimate joists by span and spacing. Free sizing tool for 16" or 24" on-centre — includes total board count.

How many rows of bridging do I need? Free calculator for wood cross-bridging & solid blocking by joist span — instant results.

Subfloor adhesive calculator: How many tubes of construction adhesive? Free estimator based on floor area — covers 28 oz & 10 oz tubes.

How many OSB sheets do I need? Free calculator for 4x8 subfloor panels — accounts for waste and gives exact sheet count instantly.

How many studs do I need? Free wall stud calculator for 16" & 24" OC spacing — includes extras for corners, doors, and window openings.

Bottom plate calculator: Estimate 2x4 or 2x6 sole plates by wall length. Free tool that gives board count and total linear feet needed.

How much lumber for double top plates? Free calculator for 2x4 & 2x6 walls — gives exact board count with overlap stagger included.

Header calculator: What size header for my opening? Free tool for door & window spans — covers 2x6, 2x8, 2x10 & 2x12 headers.

How many sheets of sheathing for exterior walls? Free calculator for 4x8 OSB & plywood panels — includes waste factor estimates.

How many roof trusses do I need? Free calculator for 24" OC standard spacing — enter roof length for instant truss count and layout.

Rafter calculator: Estimate rafter count by roof length & spacing. Free tool for 16" and 24" OC — works for gable and hip roofs.

Ridge board calculator: How many boards for my roof peak? Free tool for 2x8, 2x10 & 2x12 ridge boards — gives length and count.

How many OSB sheets to sheathe my roof? Free roof decking calculator for 4x8 panels — factors in roof pitch and waste percentage.

Shingle calculator: How many bundles do I need? Free estimator for 3-tab & architectural shingles — converts square footage to bundles.

How many rolls of roofing underlayment? Free calculator for 15 lb felt, 30 lb felt & synthetic — accounts for overlap and waste.

Drip edge calculator: Estimate linear feet of flashing for your roof. Free tool — gives piece count for standard 10 ft drip edge strips.

What pitch is my roof? Free roof pitch calculator — enter rise & run for instant angle, slope %, and area multiplier.

Roof area calculator: Convert flat dimensions to actual roof area. Free tool — accounts for pitch multiplier, gives roofing squares.

How steep is my roof? Free slope calculator — measure rise & run to get pitch ratio, angle, and recommended roofing material type.

How many rolls of housewrap do I need? Free Tyvek calculator by wall area — covers standard roll widths with overlap.

Vinyl siding calculator: Estimate panels by wall square footage. Free tool that accounts for doors, windows & 10% waste factor.

How many HardiePlank boards do I need? Free fibre cement siding calculator — with waste included.

Window flashing tape calculator: Estimate linear feet for all openings. Free tool for 4", 6" & 9" wide self-adhesive flashing.

How many insulation batts do I need? Free calculator for R-13, R-15, R-19 & R-21 — covers 2x4 and 2x6 wall cavities instantly.

How much drywall do I need? Free calculator for 1/2" & 5/8" sheets — estimates 4x8 and 4x12 panels for walls and ceilings.

Drywall screw calculator: How many screws per sheet? Free estimator for 1-1/4" & 1-5/8" screws — gives total count and boxes needed.

How much joint compound do I need? Free mud calculator for drywall finishing — estimates buckets for taping, bedding & skim coats.

Framing nail calculator: How many pounds of nails for my project? Free tool for 16d & 8d common nails — based on stud count.

How many joist hangers do I need? Free calculator for LUS, LU & HU series connectors — covers floor and ceiling joist framing.

Hurricane tie calculator: Estimate rafter-to-wall connectors for wind resistance. Free tool for H2.5A & H10 Simpson Strong-Tie clips.

How much does lumber cost? Free calculator for 2x4, 2x6, 2x8 & more — estimates total cost in CAD by quantity and current prices.

Board feet calculator: Convert lumber dimensions to board feet. Free tool for hardwood pricing — instant BF and cost estimate in CAD.

How many plywood sheets do I need? Free calculator for 1/4" to 3/4" panels — gives sheet count and cost estimate in CAD.

How much paint do I need? Free coverage calculator for walls & ceilings — accounts for coats, gives litres and can count.

Paint cost calculator: Estimate total project cost by quality level. Free tool for economy to premium — includes supplies estimate in CAD.

How much primer do I need? Free calculator for new drywall, wood & repaints — adjusts coverage by surface type.

How many deck boards do I need? Free calculator for treated, cedar & composite boards — gives board count, linear feet, and waste factor.

Deck footing calculator: How many concrete piers for my deck? Free tool — gives footing count, post layout, and beam spacing.

How many railing posts and balusters do I need? Free deck railing calculator — gives post count, baluster total, and rail linear feet.

Deck stair calculator: How many steps and stringers? Free tool — enter deck height for step count, stringer quantity, and tread boards.