Canadian calculators for home, yard, kitchen and road
105 free tools with metric first inputs, Canadian bag and can sizes, and answers you can take straight to the store. No sign up, no cost, and every calculation runs right in your browser.
Construction and Renovation
Concrete Calculator
Slabs, pads and footings in cubic metres, cubic yards and 30 kg pre-mix bags.
Open calculatorPaint Calculator
Litres and 3.78 L cans for any room, with doors, windows, ceiling and primer handled.
Open calculatorDeck Board Calculator
Boards, linear metres and screws for a deck, with board gap and joist spacing.
Open calculatorFlooring Calculator
Boxes of laminate, vinyl or hardwood, with waste for straight or diagonal layouts.
Open calculatorTile Calculator
Tiles and boxes for floors and walls, with grout gap and waste included.
Open calculatorDrywall Sheet Calculator
Sheets of drywall for walls and ceilings, plus screws and compound guidance.
Open calculatorRoof Pitch Calculator
Rise and run converted to pitch ratio, degrees, percent and rafter factor.
Open calculatorRoof Shingle Calculator
Roofing squares and bundles from your roof footprint and pitch.
Open calculatorFence Calculator
Posts, rails and pickets for a fence of any length and spacing.
Open calculatorStair Calculator
Riser height, tread count and stringer length from your total rise.
Open calculatorStud Wall Calculator
Studs for a framed wall at 16 or 24 inch centres, openings allowed for.
Open calculatorBoard Feet Calculator
Board feet from board dimensions, with cost at your price per board foot.
Open calculatorPlywood and Sheet Goods Calculator
Sheets of plywood or OSB to cover any area, waste included.
Open calculatorGrout Calculator
Kilograms of grout from tile size, gap and area, density stated on the page.
Open calculatorInsulation Calculator
Bags of blown-in insulation or batts to hit your target R-value.
Open calculatorConcrete Footings Calculator
Concrete for sonotube footings: volume and bags per hole and in total.
Open calculatorBaseboard and Trim Calculator
Pieces of baseboard or trim for a room, with mitre waste included.
Open calculatorWallpaper Calculator
Rolls of wallpaper for a wall or room, with pattern repeat allowance.
Open calculatorCaulk and Sealant Calculator
Cartridges of caulk or sealant for a joint, from its length and bead size.
Open calculatorConcrete Steps Calculator
Concrete volume and bags for a set of poured steps.
Open calculatorLumber Cost Estimator
Compare lumber priced per board foot versus per piece, side by side.
Open calculatorRebar Calculator
Rebar for a slab grid: bar counts each way, total metres, stock bars to buy and steel weight.
Open calculatorConcrete Block Wall Calculator
Concrete blocks for a wall: blocks per course, courses, total to buy and mortar bags.
Open calculatorVoltage Drop Calculator
Voltage drop and percent drop for a wire run, from wire size, length, current and voltage.
Open calculatorYard and Garden
Mulch and Soil Calculator
Mulch and soil in bags or bulk yards for beds of any size and depth.
Open calculatorGravel Calculator
Gravel, crushed stone and sand in cubic yards and tonnes.
Open calculatorSod Calculator
Sod rolls and pallets to cover a lawn area.
Open calculatorSand Calculator
Sand for playboxes, pavers and projects, in cubic metres and tonnes.
Open calculatorPatio Stone Calculator
Patio stones plus the base gravel and bedding sand under them.
Open calculatorRetaining Wall Block Calculator
Blocks and cap stones for a garden retaining wall.
Open calculatorFirewood Calculator
Cords in a wood stack, from its length, height and depth.
Open calculatorGrass Seed and Fertilizer Calculator
Grass seed and fertilizer quantities for overseeding or a new lawn.
Open calculatorRaised Bed Soil Calculator
Litres and bags of soil to fill a raised garden bed.
Open calculatorPond Volume Calculator
Pond volume in litres and gallons for liners, pumps and treatments.
Open calculatorSnow Load Estimate
Estimate the weight of snow sitting on your roof, by depth and snow type.
Open calculatorCompost Calculator
How much greens and browns to add for the compost volume you want.
Open calculatorSprinkler Water Usage Calculator
Sprinkler water use per session and per month, in litres.
Open calculatorIce Melt Calculator
Kilograms of ice melt per storm and per season for your driveway.
Open calculatorAsphalt Calculator
Tonnes of asphalt for a driveway or patch, from area and thickness.
Open calculatorHome and Energy
Heating BTU Calculator
Heater size in BTU and kW for a room, factored for Canadian climate zones.
Open calculatorAC Sizing Calculator
Air conditioner size in BTU and tons for a room or home.
Open calculatorAppliance Electricity Cost Calculator
What an appliance costs to run, at Ontario time-of-use rates or your own.
Open calculatorLED Savings Calculator
Yearly savings and payback when you switch bulbs to LED.
Open calculatorPool Volume Calculator
Pool volume in litres and gallons, plus what a fill costs.
Open calculatorHot Tub Volume and Heating Cost
Hot tub litres and the cost to heat a fill at your electricity rate.
Open calculatorSolar Panel Estimator
How many solar panels fit your roof and what they could generate yearly.
Open calculatorGenerator Sizing Calculator
Add up appliance watts to size a backup generator with headroom.
Open calculatorPropane Usage Calculator
How long a propane tank lasts an appliance, in days.
Open calculatorWater Usage Cost Calculator
Monthly water use and cost from showers, flushes and laundry.
Open calculatorCurtain Panel Calculator
Curtain panels and rod length for a window, at your fullness.
Open calculatorAir Purifier Sizing Calculator
The CADR an air purifier needs for your room size and air changes.
Open calculatorHeating Cost Comparison Calculator
Compare yearly heating costs for gas, electric, heat pump, oil and propane at your own fuel prices.
Open calculatorHeating Degree Days Calculator
Heating degree days for any period, from average temperatures and your base temperature.
Open calculatorWind Chill Calculator
Wind chill from air temperature and wind speed, with Environment Canada frostbite risk bands.
Open calculatorAuto and Travel
Trip Fuel Cost Calculator
Litres and dollars for a road trip, round trip and up to three vehicles.
Open calculatorFuel Economy Converter
Convert between L per 100 km, MPG US, MPG imperial and km per L.
Open calculatorTire Size Calculator
Compare two tire sizes: diameter, difference and true speedometer speed.
Open calculatorEV Charging Cost Calculator
Cost to charge an EV, per charge and per 100 km.
Open calculatorEV vs Gas Comparison
Yearly and five year fuel cost, electric versus gas, side by side.
Open calculatorTrip Time Calculator
Driving time with breaks, and when you will actually arrive.
Open calculatorVehicle Range Calculator
How far a tank takes you, and what a full tank costs.
Open calculatorCargo Volume Calculator
Trunk and cargo volume in litres and cubic feet from measurements.
Open calculatorKitchen and Cooking
Recipe Scaler
Scale a recipe up or down by servings, ingredient by ingredient.
Open calculatorBakers Percentage Calculator
Baker's percentages turned into grams for any flour weight.
Open calculatorTurkey Roasting Time Calculator
Roasting time for a turkey by weight, stuffed or not, with a rest time.
Open calculatorCoffee Ratio Calculator
Coffee and water amounts for ratios from 1:15 to 1:18.
Open calculatorPizza Dough Calculator
Flour, water, salt and yeast in grams for your pizza count and size.
Open calculatorOven Temperature Converter
Fahrenheit, Celsius and Gas Mark, with the fan oven adjustment.
Open calculatorPan Size Converter
Scale batter when you change baking pan sizes, by volume ratio.
Open calculatorCooking Unit Converter
Cups, spoons, millilitres and grams for common ingredients.
Open calculatorBacksplash Tile Calculator
Tiles or mosaic sheets for a kitchen backsplash, openings deducted.
Open calculatorUnit Conversions
Length Converter
Millimetres to miles: every common length unit, both directions.
Open converterWeight and Mass Converter
Grams, kilograms, ounces, pounds, tonnes and stone.
Open converterTemperature Converter
Celsius, Fahrenheit and Kelvin, with everyday reference points.
Open converterVolume Converter
Millilitres, litres, cups, gallons US and imperial, and cubic metres.
Open converterArea Converter
Square metres, square feet, acres, hectares and more.
Open converterSpeed Converter
Kilometres per hour, mph, metres per second and knots.
Open converterPressure Converter
psi, kPa, bar, atmospheres and mmHg.
Open converterTorque Converter
Newton metres, pound-feet, pound-inches and kilogram metres.
Open converterShoe Size Converter
Shoe sizes between Canada and US, EU and UK, adults and kids.
Open converterSlope and Grade Converter
Slope as percent, degrees and a 1 in X ratio.
Open converterData Storage Converter
Bytes to terabytes, decimal and binary, and why drive sizes differ.
Open converterEveryday Math
Date Difference Calculator
Days, weeks and hours between two dates.
Open calculatorAge Calculator
Exact age in years, months and days, plus the next birthday countdown.
Open calculatorPercentage Calculator
Percent of a number, what percent, and percent change.
Open calculatorDiscount and Sale Price Calculator
Sale price after one or two discounts, tax included if you want it.
Open calculatorWorking Days Calculator
Business days between two dates, weekends excluded.
Open calculatorBill Splitter
Split a bill with tax and tip, per person.
Open calculatorDays Until Calculator
Days, weeks and hours until a date you are waiting for.
Open calculatorProvincial Sales Tax Calculator
GST, HST, PST, RST or QST on any amount, for every province and territory.
Open calculatorMoving, Pets and Access
Moving Box Estimator
How many small, medium and large moving boxes a home needs.
Open calculatorMoving Truck Size Calculator
The moving truck size your furniture and boxes call for.
Open calculatorStorage Unit Size Calculator
Which storage unit size fits your rooms or item list.
Open calculatorAquarium Calculator
Tank volume in litres and gallons, and its filled weight.
Open calculatorDog Food Portion Calculator
Cups of food per day for your dog's weight and activity level.
Open calculatorRamp Slope Calculator
Ramp run and length at 1:12, 1:16 or 1:20, with slope in degrees.
Open calculatorLadder Angle Calculator
Ladder base distance and length using the 4 to 1 rule.
Open calculatorFamily and Events
Child Care Fee Calculator
What child care really costs per year, per month and per day after reductions, subsidies and sibling discounts.
Open calculatorWedding Budget Calculator
Split a wedding budget by category with editable percentages, and see the cost per guest.
Open calculatorWedding Drink Calculator
Beer, wine and spirits quantities for your guest count, bar hours and drink mix, with case and bottle counts.
Open calculatorWedding Table and Seating Calculator
Tables, chairs, linens and floor space from your guest count, ready for a rental order.
Open calculatorBusiness
Etsy Fee Calculator
Every fee on an Etsy sale, plus your payout and profit after item and shipping costs.
Open calculatorDimensional Weight Calculator
Dimensional weight for a parcel and the billable weight your carrier will charge.
Open calculatorBreak-Even Calculator
Units and revenue needed to cover fixed and variable costs, plus the volume for a target profit.
Open calculatorOvertime Pay Calculator
Weekly gross pay with overtime at time and a half or double time, using your provincial threshold.
Open calculatorGuides
Long-form guides that explain the math behind the calculators, with worked Canadian examples.
How Much Concrete Do I Need? Slabs, Footings, and Bag Counts Explained
Concrete volume, bag counts and waste for slabs and footings, with ready mix guidance.
Read guideDeck Materials Guide for Canada: Boards, Joists, Screws, and Footings
Plan deck boards, joists, screws and footings for a Canadian build, with a full materials checklist.
Read guideDrywall, Paint, and Finishing Estimate for One Room: Sheets, Coats, and Trim
Estimate drywall sheets, paint, primer and trim for one room, walls, ceiling and two coats.
Read guideFence Materials Calculator Guide: Posts, Rails, Pickets, and Concrete
Work out fence posts, rails, pickets and concrete, with a 30 m worked example.
Read guideFlooring by the Box: How to Calculate Boxes, Waste, and Tile Counts for Any Room
How many boxes of flooring or tiles you need: coverage per box and waste by layout.
Read guideRoof Shingles, Squares and Bundles: How to Calculate What You Need
Work out shingles in squares and bundles, with pitch factor and waste for a Canadian roof.
Read guideAttic Insulation and R-Value Guide: Depth, Bags, and Payback Math
Reach R-50 in a Canadian attic: R and RSI math, depth, bag coverage, and payback steps.
Read guideHow Many BTUs Do I Need? Heating and Cooling Sizing Guide
Estimate furnace, heat pump and AC size in BTUs, with kW and ton conversions.
Read guideOntario Electricity Cost and Time of Use Rates: How to Calculate What Appliances Cost to Run
How Ontario time of use pricing works, and what your appliances cost to run.
Read guideSolar Panels in Canada: How Many Panels You Need and How Much Power Your Roof Could Make
How many solar panels fit your Canadian roof, and what they could generate yearly.
Read guideKitchen and Bathroom Renovation Budget Guide: Build a Worksheet Before You Collect Quotes
Build a kitchen or bathroom renovation budget worksheet before you collect quotes.
Read guideGST, HST, PST on Quotes Explained: Why Tax on a Contractor Quote Differs by Province
Why tax on a Canadian contractor quote differs by province, and how to check a quote total.
Read guideHow to Read a Contractor Quote: Markup, Margin and Fair Comparisons
Tell markup from margin, spot allowances and change orders, and compare bids fairly.
Read guideMoving Boxes, Truck Size and Storage Size: A Planning Guide
Estimate moving boxes by home size, choose a truck class, and size a storage unit.
Read guideWhy Canadian numbers?
Most online calculators are built for the United States and quietly assume American sizes. A gallon there is not the can on a Canadian shelf, a bag of pre-mix here is sold in kilograms, and a heater sized for a mild winter will struggle in January in Manitoba. Mississippi Maple is built the other way around.
Metric first, imperial when you want it
Inputs lead with metres, millimetres and litres, because that is how Canadian building supplies are labelled. Where a tape measure in feet and inches is more natural, the calculator offers an imperial option so you never have to convert by hand.
Canadian bag and container sizes
Answers come in the units you actually buy: 30 kg bags of pre-mix concrete, 3.78 L cans of paint, 56.6 L bags of mulch, and bulk material by the cubic yard and tonne.
Canadian climate built in
Where weather changes the answer, like heating load and frost depth, the calculators use Canadian conditions rather than a generic average.
Planning a bigger project?
Mississippi Maple Pro is on the way: save your calculations, build project material lists, export them, and skip the ads. See what Pro will include.