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
4.07
Estimated concrete cost
$631
Total cubic feet
100.0
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter apron length (ft).
- 2Enter apron width (ft).
- 3Enter thickness (in).
- 4Enter waste factor (%).
- 5Enter ready-mix price per cubic yard ($).
- 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 driveway apron — the section connecting the street or sidewalk to the driveway — takes vehicle loads and often city inspection, so it's typically poured thicker than a patio slab. This calculator defaults to 10 feet by 20 feet at 6 inches thick, then returns ready-mix cubic yardage and total material cost, adjustable for your actual apron dimensions and local concrete price.
Worked example
Using the values the calculator loads with:
Inputs
- Apron length: 20 ft
- Apron width: 10 ft
- Thickness: 6 in
- Waste factor: 10 %
- Ready-mix price per cubic yard: 155 $
Results
- Ready-mix needed: 4.07
- Estimated concrete cost: $631
- Total cubic feet: 100
What each field means
Inputs
- Apron length (ft)
- The apron length used in the calculation, measured in ft. Starts at 20 ft so you have a working example on load.
- Apron width (ft)
- The apron width used in the calculation, measured in ft. Starts at 10 ft so you have a working example on load.
- Thickness (in)
- The thickness used in the calculation, measured in in. Starts at 6 in so you have a working example on load. Accepted range: 4–12 in.
- Waste factor (%)
- The waste factor used in the calculation, measured in %. Starts at 10 % so you have a working example on load. Accepted range: 0–30 %.
- Ready-mix price per cubic yard ($)
- The ready-mix price per cubic yard used in the calculation, measured in $. Starts at 155 $ 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
Why is a driveway apron thicker than a regular slab?
Aprons see repeated vehicle turning loads and sometimes truck traffic, so most municipalities require 6 inches minimum, often with rebar, versus 4 inches for a patio.
Do I need a permit to pour a driveway apron?
Often yes, especially where it meets a public street or sidewalk — check with your city's public works department before pouring, since apron specs are frequently dictated by local standards.
How many cubic yards for a 10x20 apron at 6 inches?
About 4.1 cubic yards including a 10% waste factor, which typically requires a dedicated ready-mix delivery rather than hand-mixed bags.
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). 10x20 Driveway Apron Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/10x20-driveway-apron-calculator
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/10x20-driveway-apron-calculator" target="_blank" rel="noopener">10x20 Driveway Apron Calculator — RevenueLab</a> (2026).</p>
Source: [10x20 Driveway Apron Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/10x20-driveway-apron-calculator) (2026).