Home & DIY calculators

BTU capacity for a room.

Tons of asphalt for a driveway.

Even baluster spacing that meets the 4-inch sphere rule.

Thin brick veneer needed for a wall.

Heating and cooling capacity a room needs.

Square yards of carpet and cost.

CMU blocks and mortar bags for a wall.

Cubic yards and bags for slabs, footings and posts.

Yards, bags, rebar and total cost for a concrete slab.

Countertop area and slab count for a kitchen.

Miter and bevel angles for crown molding corners.

Boards, joists and cost for a deck.

Step count, rise, run and stringer length for deck stairs.

Pint capacity for your room size and dampness level.

Sheets, screws and compound needed.

What any appliance costs to run per day, month and year.

Posts, rails and pickets needed.

Bags of concrete per post hole, plus totals for the whole fence.

Pounds of fertiliser for a target nitrogen rate and NPK.

Convert a stack of firewood into cords, face cords and cost.

Boxes of flooring and cost.

Work out gravel, pipe, fabric and fall for a French drain trench.

Wire size, IPPT and turns for a replacement spring.

Watts needed to run your home.

Pounds of seed for new lawns and overseeding, by grass type.

Tons and cubic yards of gravel for any area.

Pounds of grout for any tile size, joint width and area.

Pick 5 in or 6 in gutters from roof area, pitch and rainfall.

Batts or rolls needed by R-value.

Check the maximum floor joist span for a given size, spacing and load.

Bags of mortar for block or brick.

Bags or yards of mulch for your beds.

Cabinet size and floor clearance for a wall bed.

Gallons needed for walls, doors and windows deducted.

Pavers, base gravel and sand for a patio or path.

Pavers, base and edging for a patio.

PEX pipe size for fixture flow demand.

Mat borders and opening size for any frame and artwork.

How many 4x8 sheets you need for any area, with cost.

Dose liquid chlorine, tablets or shock for your pool volume.

Gallons in a pool, plus chlorine dosing.

Pitch to degrees, plumb cut and birdsmouth seat cut angles.

Common, hip and valley rafter length from span, pitch and overhang.

Rainwater collected from your roof for barrel sizing.

Cubic feet and bags of soil for a raised garden bed.

Rebar length and tie count for a slab.

Count blocks, caps, base gravel and backfill for a retaining wall.

Pitch, angle, rafter length and roof area.

Squares, bundles, nails and underlayment for a shingle roof.

Tank capacity for your household.

Shelf-pin hole layout for cabinets and bookcases.

Squares and boxes of siding from wall area minus openings.

Rolls or pallets of turf needed.

System size, panel count and payback period.

Room area for flooring, paint and materials.

Runner length for straight stairs, winders, mid-landings and half-landings.

Rise, run and stringer length for stairs.

Tile count, boxes and grout for any surface.

Convert tons of gravel, sand or soil to cubic yards.

Cubic yards and tons of topsoil.

Rolls needed, allowing for pattern repeat.

Tank or tankless size for your home.

Ramp length from rise using ADA slope ratios.

Ramp length and slope against the 1:12 ADA guideline.

Cable size for current, length and voltage drop.