All calculators
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52 calculators available
Cooling & air quality
Size your aircon and plan a more comfortable room.
Aircon running costs
Estimate cost from electrical input power and operating hours.Air purifier sizing
Find a CADR target from room volume and compare purifier capacity.Purifier filters and running costs
Combine electricity, filters and purchase price from your inputs.Ventilation and extractor fan sizing
Work out the airflow your room needs and choose the right extractor fan.Paint, walls & floors
Turn room measurements into the right material quantities.
Tiles
Calculate tiles, whole boxes and a budget, with a printable shopping list.Paint quantity
Measure walls, calculate litres and whole tins, and plan your budget.SPC flooring
Plan whole boxes of SPC flooring and compatible underlay.Vinyl flooring
Calculate boxed vinyl planks or tiles, cutting allowance and costs.Laminate flooring
Plan laminate boxes, separate underlay and a shopping list.Tile adhesive
Turn the tiled area and product coverage into whole bags of adhesive.Grout
Use tile and joint measurements to estimate grout and whole bags.Wallpaper rolls
Plan full wallpaper drops and rolls, allowing for pattern repeat.Skirting and trim
Count stock lengths after deducting runs without skirting.Gypsum boards and finishing supplies
Estimate whole boards for a rectangular wall or ceiling.Silicone and sealant cartridges
Turn joint dimensions into sealant volume and whole cartridges.Epoxy coating quantities
Calculate complete kits from product-specific consumption per coat.Wall panelling and cladding
Count vertical full-length panels from wall width and height.Solar & electricity
Plan home energy use, solar and running costs.
Solar size and generation
Explore panel counts, roof area and estimated solar generation.Solar savings and payback
Estimate self-used solar power, bill savings and payback from your home data.Battery capacity and backup runtime
Start with the essential load and backup hours you need, then compare a battery model if you have one.Appliance electricity costs
Estimate energy use and costs from appliance power and running time.Room lighting and bulb quantities
Estimate fixture counts from area, a lux target and fixture lumens.Backup generator load and starting demand
Sum simultaneous running loads and one largest additional start demand.Roofing & insulation
Plan roofing and insulation material quantities.
Water & bathrooms
Understand water storage, volumes and household use.
Household water storage and backup days
Compare daily use with chosen reserve days and tank sizes.Tank volume
Calculate rectangular or cylindrical tank volume from internal dimensions.Shower water and heating costs
Calculate water volume from measured flow and duration.Rainwater collection
Convert roof area and rainfall into potential collected water.Pond volume and liner size
Estimate water and liner for a rectangular pond with straight sides.Pool volume and filling cost
Estimate rectangular pool water from average water depth.Windows & furnishings
Measure for curtains, blinds and window coverings.
Curtain size and panel quantities
Calculate curtain width, panel quantities and whole packs.Blinds measurements
For outside-mounted roller blinds: estimate the count and order dimensions.Mosquito-screen mesh quantities
Count full screen cuts per roll.Window-film quantities
Count full film cuts and rolls for equal glass panes.Garden & outdoor projects
Plan soil, paving and outdoor projects.
Soil and compost quantities
Plan litres, whole bags or bulk volumes for soil and compost.Gravel, sand and decorative stone quantities
Estimate aggregate volume from your measured area and chosen depthPaving quantities
Count slabs from area and actual slab sizeRaised-bed materials
Plan cut boards and soil for multiple bedsLawn and turf quantities
Estimate turf pieces from lawn area and actual roll sizeFence materials
Count posts and boards by actual runs, excluding a gate openingMulch and garden-bed top-up
Calculate mulch volume from covered area and chosen depthDeck boards and compatible fixings
Count board rows, stock boards and fixings from your layoutDeck and fence stain or wood finish
Estimate finish litres and cans from area, coats and product coverageGarden drainage trench materials
Calculate aggregate after pipe displacement and fabric from trench geometryBuilding materials
Estimate material quantities from your project dimensions.
Concrete quantities
Calculate wet volume and bags from the stated mixed yield per bag.Brick and block quantities
Count units from net wall area and block face plus joints.Masonry mortar quantities
Calculate mortar from wall size, openings, block size and joint width.Plywood and sheet-material quantities
Count full rectangular cuts per sheet; choose whether 90° rotation is allowed.Measurements & conversions
Get your measurements ready for the next project.
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