Estimate Concrete for LA Slabs, Driveways, Patios, Footings & Foundations
Use this free Concrete Calculator in Santa Ana to estimate cubic feet, cubic yards, concrete bags, truck loads and editable material cost for residential and commercial concrete projects across Santa Ana, California.
Choose a slab, footing, wall or delivery/cost calculation and enter your project dimensions.
Estimate concrete for patios, driveways, garage floors, sidewalks and rectangular slabs.
Estimate square or rectangular footings, post bases and isolated foundation pads.
Estimate concrete for straight walls, curbs, raised borders and similar rectangular sections.
Convert known concrete volume into bag quantities, truck loads and an editable material-cost estimate.
Concrete prices, truck capacities, short-load fees and delivery charges vary. Use a current Santa Ana-area supplier quote.
Estimate concrete for driveways, patios and garage floors.
Calculate repeated foundation pads and post-support concrete.
Estimate straight concrete walls, curbs and rectangular sections.
Convert volume into bags, trucks and editable current pricing.
A Concrete Calculator in Santa Ana starts with finished concrete dimensions. Measure the slab, footing, wall or pad itself—not the entire excavation, base material or surrounding work zone. Choose the correct panel above, enter dimensions and calculate the exact geometric volume.
The calculator converts cubic feet into cubic yards and can add a planning allowance. Small pours can also be converted into bag quantities, while larger projects can be checked against mixer-truck capacity and current supplier pricing.
Use finished concrete dimensions.
Choose slab, footing, wall or delivery.
Get cubic feet and cubic yards.
Account for normal field variation.
Confirm supplier, permit and inspection requirements.
For rectangular slabs, multiply length by width by thickness. If length and width are measured in feet and slab thickness is entered in inches, divide thickness by 12 before multiplying.
Use finished dimensions for patios, driveways, garage floors and rectangular flatwork.
A 20-foot by 12-foot slab at 4 inches thick covers 240 square feet. Four inches equals approximately 0.333 foot.
The final ready-mix order may need to be rounded to the supplier's accepted ordering increment.
Driveways and patios are often easy to estimate as one or more rectangles. Widened aprons, parking pads, steps and irregular sections should be measured separately so empty space is not accidentally included.
| Project | Example Size | Thickness | Approx. Exact Volume |
|---|---|---|---|
| Small Patio | 10 × 12 ft | 4 in | 1.48 yd³ |
| Large Patio | 20 × 16 ft | 4 in | 3.95 yd³ |
| Driveway Section | 20 × 10 ft | 5 in | 3.09 yd³ |
| Garage Floor | 20 × 20 ft | 4 in | 4.94 yd³ |
Use the Concrete Slab Calculator for slab-specific estimating and Rectangular Concrete Calculator for multiple straight-sided sections.
The Footing & Pad panel estimates square or rectangular footings under posts, columns and other supports. Enter one footing's dimensions and multiply by the number of identical footings.
Convert depth from inches to feet before calculating cubic feet.
Use the Concrete Footing Calculator for dedicated footing geometry. Final footing dimensions, reinforcement and structural design should come from approved project requirements.
Straight walls and curbs with consistent dimensions can be estimated as rectangular prisms. Multiply total length by height and thickness. Where height or thickness changes, calculate each portion separately.
Divide inch-based thickness by 12 before multiplying.
Use the Concrete Wall Calculator for a wall-specific workflow.
Small repairs and isolated pads may be manageable with bagged concrete, but a multi-yard slab can require many bags and many mixer cycles. The calculator converts cubic feet into approximate 40, 60 or 80 lb bag quantities so you can compare the scale of the job.
| Bag Size | Approx. Yield Used | Bags per yd³ |
|---|---|---|
| 40 lb | 0.30 ft³ | About 90 |
| 60 lb | 0.45 ft³ | About 60 |
| 80 lb | 0.60 ft³ | About 45 |
Verify the actual bag yield on the selected product before purchasing.
Mixer-truck capacity varies by producer, vehicle, route and operating conditions. Enter the usable truck capacity confirmed by your ready-mix supplier.
The final truck may be a partial load and may be priced differently.
For dispatch timing and short-load planning, use the Concrete Delivery Calculator.
Ready-mix pricing can change with mix design, quantity, supplier, delivery distance, fuel, minimum-load rules and other charges. The calculator keeps local price editable rather than hard-coding a Santa Ana rate.
Add delivery fees per truck when applicable. Pumping, labor, reinforcement, finishing, formwork and permit fees are separate.
Concrete work connected to a building, addition, foundation, structural wall, retaining wall or other regulated construction may require plan review, permits and inspections through the City of Santa Ana Planning and Building Agency and its Building Safety functions. For project-specific permit questions, the City directs applicants to Planning & Building resources and Building Safety staff.
Santa Ana adopted updated building and fire codes in 2025. Ordinance No. NS-3088 adopts the 2025 California Building Code, based on the 2024 International Building Code, together with other current California construction codes and local amendments. For permit applications, use the code edition in effect when the application is submitted.
Before ordering concrete, determine whether the project is entirely on private property or extends into a sidewalk, curb, driveway approach, utility area or other public right-of-way. Building permits and public-works approvals can be separate processes, especially when concrete work crosses the property line.
This distinction is important for driveway approaches, curb-and-gutter work, utility cuts, sidewalk repairs and drainage connections. A concrete calculator can estimate material, but it cannot determine which City permit, engineering review or inspection applies to the work.
Santa Ana concrete placements can experience warm to hot afternoons, strong sun, low humidity and drying winds. These conditions do not change the geometric volume calculation, but they can affect evaporation, placement speed, finishing and curing.
For warm-weather placement, use the Concrete Hot Weather Calculator where applicable. Prepare curing materials, access, tools and crew assignments before the mixer arrives so the pour can proceed without avoidable delays.
Concrete volume and structural design are separate tasks. Foundations, retaining walls, reinforced slabs and other structural concrete may require project-specific dimensions, reinforcement, anchorage, drainage and approved construction documents.
Santa Ana's local code framework includes California Building and Residential Code requirements with City amendments, so structural concrete should be built from approved plans where permits apply. Use this calculator only after project geometry has been established. Related tools include the Concrete Foundation Calculator, Concrete Wall Calculator and Concrete Rebar Weight Calculator.
The City of Santa Ana provides an online and phone-based process for requesting building inspections. Its current inspection guidance asks applicants to have the permit and PIN numbers, complete project address, inspection type, inspection code, requested date and any special instructions ready before scheduling.
For permitted footing, foundation, slab or structural work, coordinate the required inspection before concrete is placed or work is concealed. Use the Concrete Pouring Checklist for crew, forms, reinforcement and material preparation, while following the permit and job card for inspection timing.
Santa Ana concrete projects may involve compact residential lots, alley access, limited curb space, active traffic and restricted mixer staging. Before ordering ready-mix, confirm where the truck can safely stop, whether a pump or conveyor is needed and how quickly the crew can place each load.
For larger pours, coordinate delivery spacing so trucks do not arrive faster than the crew can discharge, consolidate and finish the concrete. Use the Concrete Delivery Calculator for truck planning and the Concrete Mixer Capacity Calculator for site-mixed batches.
For concrete design, construction and ready-mix information, consult the American Concrete Institute (ACI) and National Ready Mixed Concrete Association (NRMCA). Final dimensions, thickness, concrete strength, reinforcement and structural details should follow approved project requirements.
Measure the project, calculate cubic yards, add a planning allowance and verify supplier and City of Santa Ana requirements.
Answers about Santa Ana slabs, driveways, footings, delivery, bags, cost, permits and inspections.