How to Pour a Concrete Patio: A Step-by-Step Guide for First-Timers
Plan, form, pour, finish and cure a concrete patio. Real material numbers for a 12×12 slab, joint spacing, curing time and the mistakes that cause cracks.
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- Concrete Slab CalculatorEnter the slab size and thickness to get cubic yards, the number of premix bags to buy and an optional bags-vs-truck cost check.
- Concrete Column & Post Hole CalculatorWork out the concrete for round piers, form tubes and post holes — one hole or a whole deck’s worth.
- Concrete Footing CalculatorEstimate concrete for continuous strip footings under walls, garages and additions.
- Concrete Steps CalculatorEstimate concrete for solid poured steps and a top landing, like a front stoop or garage entry.
- Concrete Block (CMU) CalculatorCount standard 8×8×16 concrete blocks and mortar bags for a wall, with doors and windows subtracted.
- Brick CalculatorFind how many bricks a wall or veneer needs, based on your brick size and mortar joint.
- Paver CalculatorPlan a paver patio or walkway: pavers, base gravel and bedding sand in one go.
- Rebar CalculatorLay out a rebar grid for a slab: bars each way, total length, sticks to buy and weight.
- Cubic Yard CalculatorTurn a length, width and depth into cubic yards for any bulk material.
- Square Footage CalculatorGet the area of a room, yard or odd-shaped space in square feet, square yards and square meters.
- Board Foot CalculatorWork out board feet and cost for hardwood and rough lumber.
- Drywall CalculatorEstimate drywall sheets for a room, plus the screws, tape and joint compound to finish it.
- Paint CalculatorWork out gallons (and quarts) of paint for a room’s walls and ceiling.
- Tile CalculatorCount tiles and full boxes for a floor or wall, with the right waste for your layout pattern.
- Flooring CalculatorWork out boxes of laminate, vinyl plank or hardwood for a room, closets included.
- Carpet CalculatorFind how much carpet to cut from a 12 ft or 15 ft roll and how many square yards you pay for.
- Wallpaper CalculatorCount wallpaper rolls the way installers do — by full-height strips, with pattern repeat.
- Baseboard & Trim CalculatorGet linear feet of baseboard or trim and how many 8, 12 or 16 ft pieces to buy.
- Roofing CalculatorEstimate roof area, squares, shingle bundles and underlayment from your house footprint and pitch.
- Roof Pitch CalculatorConvert rise and run into pitch, angle and rafter length.
- Deck Board CalculatorCount decking boards, joists and deck screws for a rectangular deck.
- Fence CalculatorPlan a wood fence: posts, rails, pickets and concrete bags for every post hole.
- Stair CalculatorLay out a straight stair: risers, treads, total run and stringer length, checked against common US code limits.
- Asphalt CalculatorEstimate tons of hot-mix asphalt for a driveway or pad.
- Gravel CalculatorTurn area and depth into cubic yards and tons of gravel — the unit quarries actually sell by.
- Mulch CalculatorWork out bulk cubic yards or bags of mulch for your beds.
- Topsoil CalculatorEstimate topsoil for new lawns, garden beds or leveling, in yards or bags.
- Sand CalculatorGet cubic yards, tons and bags of sand for pavers, sandboxes and leveling.
- Raised Bed Soil CalculatorFill raised beds with your own soil recipe — topsoil, compost and amendments in cubic feet and bags.
- Grass Seed CalculatorFind how many pounds of seed your lawn needs, using extension seeding rates for your grass type.
- Sod CalculatorWork out sod pieces and pallets for a new lawn.
- Lawn Fertilizer CalculatorRead the N-P-K on your bag and get exactly how many pounds to spread for your target nitrogen rate.
- Plant Spacing CalculatorFind how many plants fit a bed at your chosen spacing, in a square or staggered grid.
- Garden Watering CalculatorTurn “1 inch of water a week” into gallons and minutes for your hose or sprinkler.
- Retaining Wall CalculatorCount wall blocks, caps and drainage gravel for a segmental retaining wall.
- Sourdough Hydration CalculatorGet the real hydration of your sourdough — counting the flour and water hiding in your starter.
- Baker’s Percentage CalculatorTurn baker’s percentages into gram weights for any amount of dough.
- Pizza Dough CalculatorGrams of flour, water, salt, yeast and oil for any number of dough balls.
- Recipe ScalerPaste an ingredient list, choose new servings, and get every amount rescaled — fractions included.
- Cake Pan Size ConverterSwitching from a 9 in round to a 9×13? Find out how much to multiply the batter.
- Brine CalculatorSalt (and sugar) for a brine of any strength — by weight, plus approximate spoon measures for your salt brand.
- Coffee Ratio CalculatorGet grams of coffee for your water — or water for your dose — at any brew ratio.
- Generator Size CalculatorAdd up what you need to power in an outage and get running watts, starting watts and a sensible generator size.
- Electricity Cost CalculatorFind what an appliance really costs to run — per day, month and year.
- EV vs Gas Savings CalculatorCompare yearly fuel costs of an EV and a gas car, and how long the price difference takes to pay back.
- Water Heater Cost CalculatorCompare what electric, heat-pump and gas water heaters cost to run each year in your home.
- Solar Panel CalculatorEstimate the solar system size and number of panels to cover your monthly electricity use.
- Air Conditioner BTU CalculatorFind the right room air conditioner size in BTU for your space.
- Pool Volume CalculatorFind how many gallons your pool holds — the number every chemical dose is based on.
- Aquarium Volume CalculatorFind real water volume and weight for a rectangular fish tank.
- Turkey Thaw & Cooking Time CalculatorPlan the bird backwards from dinner: when to start thawing, how long to roast at 325°F and how many it feeds.
- Cups to Grams ConverterA cup of flour and a cup of sugar don’t weigh the same. Pick the ingredient for an accurate conversion.
- Heat Pump vs Furnace Cost CalculatorStart from the gas you already burn for heat and see what a heat pump would cost to deliver the same warmth.
- Trip Fuel Cost CalculatorDistance, MPG and gas price in; gallons, total cost and cost per person out.
- Solar Payback CalculatorA payback estimate that includes rising rates, export credits, degradation, batteries and financing — with every input editable.
- True Electricity Rate CalculatorUse two numbers from your bill to get your real cost per kWh — the figure every energy calculator needs.
- Lumber Cut List CalculatorList your parts; get the fewest boards to buy and exactly what to cut from each one.
- Mortgage CalculatorSee the whole monthly payment — principal, interest, tax, insurance, PMI and HOA — plus when PMI can come off and what extra payments save.
- Rent vs Buy CalculatorFind out whether buying or renting leaves you with more money after the years you plan to stay — and the year buying starts to win.
- Loan CalculatorSolve either way: the payment for a loan amount, or the loan amount for a payment — with the APR after fees.
- Compound Interest CalculatorWatch a starting balance and monthly deposits grow — and how much of the total is interest.
- Savings Goal CalculatorSave for a down payment, emergency fund or big purchase: get the monthly amount or the time it will take.
- Credit Card Payoff CalculatorSee how long your card balance will take to clear, what it will cost in interest, or the payment that clears it on your timeline.
- Salary to Hourly CalculatorConvert pay in either direction using your actual hours per week and paid weeks per year.
- Overtime Pay CalculatorWork out a week’s gross pay with overtime at 1.5× — and double time if you get it.
- Sales Tax CalculatorAdd tax to a price or find the pre-tax price inside a total, with 2026 state rates and your city or county rate.
- Discount CalculatorGet the final price after percent-off, an extra percent off and coupons — and the real total discount.
- Percentage CalculatorPick the question you have — the calculator solves it and shows the working.
- Percent Change CalculatorFind how much something went up or down in percent — prices, pay, traffic, weight or anything else.
- Tip CalculatorWork out the tip, the total and each person’s share in seconds.
- Age CalculatorExact age from a date of birth — today or on any date you choose.
- Days Between Dates CalculatorCount calendar days and working days between any two dates — deadlines, trips, notice periods and countdowns.
- Hours Worked CalculatorType each shift as start–end and break minutes. Get total hours, overtime and pay.
- Grade CalculatorEnter each category’s score and weight to get your current grade — and what you need on the final.
- GPA CalculatorList each class with its letter grade and credits — get semester and cumulative GPA.
Guides
All guides →- Home Improvement
- Home Improvement
Bagged Concrete vs Ready-Mix Truck: Which Is Cheaper for Your Project?
Compare the real cost and effort of 80 lb bags against ready-mix delivery, including short-load fees, and find the size where a truck starts to make sense.
- Home Improvement
How Thick Should a Concrete Slab Be? Patios, Driveways, Sheds and Garages
Typical concrete slab thickness for patios, walkways, shed bases, driveways and garages — and how going from 4 to 5 inches changes strength and cost.
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