Tile Calculator
Find out exactly how many tiles to buy for any floor or wall — with a cutting and breakage allowance included, so you do not run short mid-job.
Calculator Directory
All 100 calculators on this site, in one place. Search by name, filter by category, sort A–Z or by popularity, and save the ones you use most — your favourites and recently viewed calculators are kept in your own browser.
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Showing 1–20 of 100 calculators
Tile Square Foot Calculator
Work out the square footage of tile a room needs — in square feet, square metres and square yards — and how many tiles that means once cutting waste is added.
Shower Tile Calculator
Work out how many tiles a shower needs — three tiled walls plus the floor — with the shower door deducted and a realistic allowance for cuts around the drain, niches and corners.
Backsplash Calculator
Work out how many backsplash tiles a kitchen or bathroom needs — with power outlets deducted and a 15% allowance for the many small cuts around edges and sockets.
Flooring Calculator
Work out how many boxes of flooring a room needs — any type sold by the box — from the room size, the coverage printed on the box, and a cutting allowance.
Carpet Calculator
Work out how much carpet a room needs — in square yards for pricing, and in linear feet off the roll for ordering — including seams, pattern matching and cutting waste.
Hardwood Flooring Calculator
Work out how many hardwood planks and boxes a room needs — with a cutting allowance for end cuts and damaged boards — and what the timber will cost at your price.
Laminate Flooring Calculator
Work out how many laminate planks and boxes a room needs — plus the underlay to go beneath them — with a cutting allowance and an optional cost estimate.
Vinyl Flooring Calculator
Work out how much vinyl flooring a room needs — luxury vinyl planks (LVT/LVP) by plank and box, and sheet vinyl by the roll — with a cutting allowance for each.
Grout Calculator
Work out exactly how much grout a tiled area needs — in kilograms and bags — from the tile size, joint width and joint depth. No guessing, no wasted bags.
Concrete Calculator
Work out how much concrete any rectangular pour needs — in cubic feet, cubic metres and cubic yards — and how many bags of ready-mix that means.
Concrete Slab Calculator
Work out everything a concrete slab needs — volume, bags or ready-mix, and reinforcement mesh sheets — from the slab size and thickness.
Concrete Volume Calculator
Work out the volume of concrete for a rectangular pour or a round pier — in cubic feet, cubic metres and cubic yards — and how many bags that volume takes.
Concrete Footing Calculator
Work out how much concrete a set of footings needs — the volume of one footing, the total for all of them, and the bag count — for decks, posts and foundations.
Concrete Driveway Calculator
Work out how much concrete a driveway needs — the ready-mix volume to order, the gravel sub-base beneath it, and the cost at your price per cubic yard.
Gravel Calculator
Work out how much gravel a path, driveway or sub-base needs — volume in cubic yards and metres, and weight in tons and tonnes for ordering by weight.
Sand Calculator
Work out how much sand a bed, base or fill needs — volume, weight and bag count — from the area and depth, with wastage included.
Brick Calculator
Work out how many bricks a wall needs — with the mortar joints counted properly, wastage added, and single or double skin — for US and UK brick sizes.
Block Calculator
Work out how many concrete blocks a wall needs — with mortar joints and wastage counted — for US 16×8 in blocks and UK 440×215 mm blocks.
Mortar Calculator
Work out how much mortar a brick wall needs — volume and premix bags — from the wall size and brick size, using the exact wall-minus-brick method.
Paint Calculator
Work out how much paint any area needs — from the area, the number of coats, and your paint's own coverage. No two paints cover the same, so coverage is yours to enter.
Wall Paint Calculator
Work out how much paint the walls of a room need — doors and windows deducted, coats counted, and your paint's own coverage used.
Ceiling Paint Calculator
Work out how much paint a ceiling needs — from the room size, the number of coats, and your ceiling paint's coverage.
Wallpaper Calculator
Work out how many wallpaper rolls a room needs — strips from the perimeter, strip length with the pattern repeat, and rolls to buy.
Drywall Calculator
Work out how much drywall a room needs — wall and ceiling area, sheets with a cutting allowance, and the screws to fix them.
Wall Area Calculator
Work out the exact paintable wall area of a room — doors and windows deducted, ceiling optional — in square feet, square metres and square yards.
Primer Calculator
Work out how much primer the walls of a room need — area with openings deducted, coats, and your primer's own coverage.
Paint Cost Calculator
Work out what painting a room will cost — paint and primer quantities at the prices you enter, from the room size or an area you already know.
Drywall Mud Calculator
Work out how much joint compound (mud) a drywall job needs — litres, gallons and buckets — for a standard 3-coat taped finish.
Drywall Sheet Calculator
Work out how many drywall sheets any area needs — from the total area and the sheet size, with a cutting allowance and the offcut area shown.
Mulch Calculator
Work out how much mulch a bed or border needs — from the area and depth, in cubic yards and bags, with your own bag size.
Soil Calculator
Work out how much soil a bed or planter needs — from the area and depth, in cubic yards and bags, with your own bag size.
Topsoil Calculator
Work out how much topsoil a job needs — volume in cubic yards and weight in tonnes, with the density set from your supplier's figure.
Lawn Seed Calculator
Work out how much grass seed a lawn needs — from the area and your product's own coverage, for a new lawn or for overseeding.
Sod Calculator
Work out how much sod (turf) a lawn needs — rolls and pallets, with a cutting allowance, from your supplier's roll and pallet sizes.
Paving Calculator
Work out how many paving stones a patio or path needs — with joints and wastage counted — plus the bedding sand underneath.
Garden Bed Calculator
Work out how much soil raised garden beds need — from the bed size and the number of beds, in cubic yards and bags.
Landscape Rock Calculator
Work out how much landscape rock a bed or border needs — volume in cubic yards and weight in tonnes, with the density set from your supplier's figure.
Pea Gravel Calculator
Work out how much pea gravel a path or border needs — volume, weight and bags, with the density set from your supplier's figure.
Compost Calculator
Work out how much compost a bed or border needs — from the area and spread depth, in cubic yards and bags, with your own bag size.
Roofing Calculator
Work out how much roofing a roof needs — surface area from the footprint and pitch, roofing squares with wastage, and underlayment rolls.
Roof Shingle Calculator
Work out how many shingle bundles a roof needs — from the footprint, pitch and your manufacturer's bundle coverage.
Roof Pitch Calculator
Work out a roof's pitch from rise and run — pitch per 12, slope angle, slope factor, and the roof area from the footprint.
Roof Area Calculator
Work out the true surface area of a roof — from the footprint and pitch, with up to three sections for L-shaped or multi-part roofs.
Metal Roofing Calculator
Work out how many metal roofing panels a gable roof needs — slope length, panels per slope, and the total with wastage.
Gutter Calculator
Work out how much guttering a roof needs — total length and the number of downspouts, from the eave length and spacing.
Siding Calculator
Work out how much siding a house needs — wall area with openings deducted, boxes from your product's coverage, and wastage.
Fence Calculator
Work out how much fencing a run needs — panels, posts and rails, from the fence length and your panel width.
Deck Calculator
Work out how much decking a deck needs — boards from the size, width and gap, and joists from the spacing.
Driveway Calculator
Work out what a driveway needs by its surface — asphalt or gravel by weight, concrete by volume and bags, or pavers by count.
Home Renovation Cost Calculator
Work out what a whole-home renovation will cost — your costs per category, plus a contingency and tax, with nothing priced by the site.
Kitchen Remodel Calculator
Work out what a kitchen remodel will cost — line by line, with a contingency and tax, and the cost per square foot when you add the area.
Bathroom Remodel Calculator
Work out what a bathroom remodel will cost — line by line, with a contingency and tax, and the cost per square foot when you add the area.
Room Renovation Calculator
Work out what renovating one room will cost — from the room size and your line items, with contingency, tax and cost per square foot.
Labor Cost Calculator
Work out what labour will cost — workers, hours, overtime and the payroll burden, from your own rates.
Material Cost Calculator
Work out what materials will cost — up to five lines of quantity times price, with wastage and tax, from your own prices.
Contractor Profit Calculator
Work out a contractor's price and profit — markup on cost, profit, and margin on price, with the difference explained.
Home Improvement Budget Calculator
Work out whether your home improvement budget covers the job — your budget against your estimate, with the remainder and the percent used.
Cost Per Square Foot Calculator
Work out the cost per square foot of a project — from the total cost and the area, in dollars per ft², m² and yd².
Project Timeline Calculator
Work out how long a project will take — up to four tasks with durations and dependencies, with start and finish days for each.
Square Footage Calculator
Work out the square footage of any area — rectangle, circle or a known area — in square feet, square metres, square yards and acres.
Square Meter Calculator
Work out an area in square metres — from length and width in metres, feet or inches — with square feet, yards and hectares alongside.
Cubic Yard Calculator
Work out a volume in cubic yards — from length, width and depth — with cubic feet and cubic metres alongside.
Cubic Feet Calculator
Work out a volume in cubic feet — from length, width and depth — with cubic yards, cubic metres, litres and US gallons alongside.
Feet to Meters Converter
Convert feet to metres — exactly, with centimetres, millimetres, inches and yards alongside.
Inches to Feet Converter
Convert inches to feet — decimal feet, feet and inches, metres and centimetres, all from one number.
Area Converter
Convert any area unit to any other — square feet, square metres, square yards, acres and hectares, with exact constants.
Volume Converter
Convert any volume unit to any other — cubic feet, cubic yards, cubic metres, litres, US gallons and UK gallons.
Length Converter
Convert any length unit to any other — inches, feet, yards, miles, millimetres, centimetres, metres and kilometres.
Unit Price Calculator
Work out which product is really cheaper — by unit price, with both products in the same unit, and the saving shown.
Pipe Volume Calculator
Work out how much water a pipe holds — from its inner diameter and length — in litres, US gallons, UK gallons and cubic metres.
Water Flow Calculator
Work out how much water flows in a given time — from the flow rate and the time — in litres, US gallons and cubic metres.
Water Tank Calculator
Work out a water tank's capacity — rectangular or cylindrical — in litres, US gallons and cubic metres, with the usable volume at your fill level.
Pipe Size Calculator
Work out the pipe inner diameter a flow rate needs — and check the water velocity in an existing pipe — from flow rate and maximum velocity.
Drainage Slope Calculator
Work out a drain's fall and slope — from the length and the fall, or the length and the slope — as a percentage and as a gradient.
Hot Water Usage Calculator
Estimate how much hot water a household uses in a day — showers, baths, basin use and appliances — in litres and US gallons.
Water Pressure Calculator
Convert water pressure between bar, psi, kPa, MPa and atmospheres — and see the equivalent head of water in metres and feet.
Pool Volume Calculator
Work out a swimming pool's volume — rectangular, circular or irregular — from its dimensions and average depth, in cubic metres, litres and gallons.
Pipe Length Calculator
Work out how much pipe to buy — straight length plus elbow allowances and wastage — and how many standard pipe lengths that means.
Plumbing Cost Calculator
Work out a plumbing job's cost — pipes, fittings, fixtures and labour — with contingency and tax, from your own prices.
Electricity Cost Calculator
Work out what your electricity costs — energy used times your tariff, plus the standing charge — in total and per day.
Energy Usage Calculator
Work out how much energy your appliances use — up to three, with watts and hours per day — in kWh and in cost at your tariff.
Watt to kWh Calculator
Convert watts to kilowatt-hours — per day, per month and per year — with the cost at your tariff.
Lighting Calculator
Work out how much light a room needs — from its size and your target light level — in lumens, bulbs and watts.
Solar Panel Calculator
Estimate what a solar system produces — from its size, your sun hours and its efficiency — in kWh per day, month and year.
Battery Backup Calculator
Work out the battery you need for a backup — from the load and the hours — in amp-hours, or see how long a battery you have will last.
Generator Size Calculator
Work out the generator size you need — from your loads and their starting multipliers — in running watts, starting watts, kW and kVA.
Voltage Calculator
Work out voltage, current, resistance and power — from any two known values, with Ohm's law.
Amps to Watts Calculator
Convert amps to watts — or watts to amps — from the voltage, in watts, kilowatts and amps.
Room Heating Calculator
Work out the heating a room needs — from its size, the temperatures and the insulation — in watts, kilowatts and BTU per hour.
Window Cost Calculator
Work out what your windows cost — from the count, the size and your prices — with the total area, material cost, install cost and total.
Door Size Calculator
Work out a door's area and its rough opening — from the door size and the fitting gaps — in square metres, square feet and opening size.
Window Area Calculator
Work out the total area of your windows — and how much of it is glass — from the count, the size and the frame percentage.
Stair Calculator
Work out a staircase — from the total rise and your riser height — in steps, actual riser, total run and angle.
Railing Calculator
Work out a railing's quantities — from its length and your spacings — in balusters, posts and total length.
Insulation Calculator
Work out how much insulation you need — from the area and the coverage per pack — in packs and in cost.
Room Size Calculator
Work out a room's size — from its length, width and height — in floor area, wall area, volume and perimeter.
Furniture Space Calculator
Check whether your furniture fits — from the room size and the pieces — with the free area, the free percentage and a walkway check.
Cabinet Material Calculator
Work out the board for your cabinets — from the count, the dimensions and the shelves — in board area, sheets and edge banding.
Closet Space Calculator
Plan a closet — from its size, the rod levels and the shelves — in hanging length, shelf area, storage volume and garment capacity.
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