Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
Ready-mix needed
3.91
Estimated concrete cost
$587
Total cubic feet
96.0
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter deck length (ft).
- 2Enter deck width (ft).
- 3Enter thickness (in).
- 4Enter waste factor (%).
- 5Enter ready-mix price per cubic yard ($).
- 6Read your ready-mix needed on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
A 12x24 pool deck is a common surround size for an above-ground or small inground pool. This calculator defaults to a 4-inch concrete slab, returning ready-mix cubic yardage and total cost, so you can plan the deck area before pouring.
Worked example
Using the values the calculator loads with:
Inputs
- Deck length: 24 ft
- Deck width: 12 ft
- Thickness: 4 in
- Waste factor: 10 %
- Ready-mix price per cubic yard: 150 $
Results
- Ready-mix needed: 3.91
- Estimated concrete cost: $587
- Total cubic feet: 96
What each field means
Inputs
- Deck length (ft)
- The deck length used in the calculation, measured in ft. Starts at 24 ft so you have a working example on load.
- Deck width (ft)
- The deck width used in the calculation, measured in ft. Starts at 12 ft so you have a working example on load.
- Thickness (in)
- The thickness used in the calculation, measured in in. Starts at 4 in so you have a working example on load. Accepted range: 2–8 in.
- Waste factor (%)
- The waste factor used in the calculation, measured in %. Starts at 10 % so you have a working example on load. Accepted range: 0–30 %.
- Ready-mix price per cubic yard ($)
- The ready-mix price per cubic yard used in the calculation, measured in $. Starts at 150 $ so you have a working example on load.
Results
- Ready-mix needed
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Estimated concrete cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total cubic feet
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How thick should a pool deck slab be?
4 inches is standard for a walking surface pool deck; go thicker only if it needs to support heavy equipment or a spa.
Should a pool deck slope?
Yes, a slight slope (about 1/4 inch per foot) away from the pool is standard to keep water from pooling on the deck surface.
Can I use pavers instead of poured concrete?
Yes, pavers are popular around pools because they stay cooler underfoot and individual pieces can be replaced; swap this tool's output for the paver patio calculator if going that route.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). 12x24 Pool Deck Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/12x24-pool-deck-calculator
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/12x24-pool-deck-calculator" target="_blank" rel="noopener">12x24 Pool Deck Calculator — RevenueLab</a> (2026).</p>
Source: [12x24 Pool Deck Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/12x24-pool-deck-calculator) (2026).