Home And Garden calculators
28 calculators Fence Calculator Plan a fence in feet or metres: get posts, sections, rails, pickets, post length, concrete per hole and a full material cost estimate. Show your work included.
Open Flooring Calculator Work out flooring area for one or two rooms, boxes to buy with a waste allowance, plank rows and last-row width, underlayment, and a full material plus labor cost.
Open Paint Calculator Work out how much paint a room needs from wall area or room dimensions, minus doors and windows, across coats. Get litres or gallons, cans to buy and cost.
Open Paver Calculator Work out how many pavers a patio, path, or driveway needs, plus the gravel base, bedding sand, polymeric joint sand bags, and a cost estimate in metric or imperial.
Open Plywood Calculator Find how many plywood sheets you need by area or by length x width. Pick a sheet size, add waste, estimate total cost and sheet weight in metric or imperial.
Open Ramp Calculator Size a wheelchair or loading ramp by slope ratio or by the run you have. Get length, angle, slope percent, landings, sections, handrails and an optional cost.
Open Siding Calculator Estimate siding from wall and gable dimensions, count windows and doors, add waste, then get squares, panels and boxes to order plus an optional cost estimate.
Open Stair Calculator Design a staircase from the total rise: steps, exact riser, tread run, total run, stringer length and height, stair angle, headroom check, code compliance and a cost estimate.
Open Wallpaper Calculator Find how many wallpaper rolls a room needs with the real strip-by-drop method: pattern repeat, roll length and width, doors and windows, plus a cost estimate.
Open Air Changes per Hour Calculator Calculate air changes per hour (ACH) from room size and airflow, or find the CFM needed to hit a target ACH. Includes room-type guidelines and removal times.
Open Air Conditioner BTU Calculator Find the right air conditioner size for any room. Enter room dimensions, ceiling height, insulation, climate, and occupants to get the exact BTU/hr you need.
Open Arch Calculator Calculate arch radius, arc length, area, and focus points for semicircular, segmental, elliptical, and gothic arch types. Instant results in metric or imperial.
Open Carpet Calculator Calculate how much carpet you need and what it will cost. Enter room dimensions, carpet price, padding and labour rates to get a full material and cost breakdown.
Open Chicken Coop Size Calculator Calculate coop floor area, run space, nesting boxes, perch length, and ventilation for your flock. Supports standard and bantam chickens, metric or imperial.
Open Clearance Hole Calculator Find the correct clearance hole diameter for any metric or imperial bolt. Choose close, normal, or loose fit per ISO 273 and ASME B18.2.8, with step-by-step working.
Open Deck Stain Calculator Calculate exactly how many gallons of deck stain you need. Enter your deck dimensions, railing, stairs, stain type, and wood condition for an instant estimate.
Open Epoxy Calculator: How Much Resin Do You Need? Calculate how much epoxy resin and hardener you need for any surface. Enter dimensions, thickness, mix ratio, and coat type to get Part A, Part B, gallons, and kits.
Open Fence Post Depth Calculator Calculate fence post depth by height, soil type, wind exposure, and frost line. Instant embed depth, post length, and 80 lb concrete bag count per post.
Open Floor Area Ratio Calculator Calculate floor area ratio (FAR) from lot size and floor area, find the maximum allowable building area, or solve from footprint and stories. Metric and imperial.
Open Furnace Size Calculator Find the right furnace size in BTU for your home. Enter square footage, climate zone, insulation, and ceiling height for an instant, accurate heating load estimate.
Open Heat Loss Calculator Calculate room heat loss in BTU/hr, watts, or kilowatts. Covers walls, windows, doors, ceiling, floor, and ventilation infiltration with a full component breakdown.
Open Hoop House Calculator Calculate hoop house surface area, conductive heat loss, heater capacity, and total material cost for any greenhouse type in metric or imperial units.
Open Ladder Angle Calculator Find the safe angle, base distance, and working height for any ladder. Uses the 4:1 rule, OSHA guidelines, metric and imperial units, with step-by-step working.
Open Paver Sand Calculator Calculate exactly how much paver sand you need for bedding and joints. Get cubic yards, tonnes, bag count, and total cost with metric or imperial units.
Open Shiplap Calculator Calculate how many shiplap boards you need for any wall or ceiling. Subtract windows and doors, add a waste factor, and get a full cost breakdown instantly.
Open Square Yard Calculator Calculate area in square yards for rectangles, circles, triangles, and borders. Supports inches, feet, yards, cm, meters. Includes cost estimator and unit conversions.
Open Stair Carpet Calculator: Area, Rolls and Cost Estimator Calculate the exact carpet area for your stairs. Enter step count, tread depth, riser height, stair width, nosing, landing and waste to get total area and cost.
Open Wainscoting Calculator Calculate wainscoting panel count, stile spacing, rail lengths, and total material quantities for shadow-box or board-and-batten styles. Includes cost estimate.
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