Estimate Concrete for Texas Slabs, Driveways, Patios, Footings & Foundations
Use this free Concrete Calculator in Texas to estimate cubic feet, cubic yards, concrete bags, truck loads and editable material cost for residential and commercial concrete projects in projects across Texas.
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 Texas-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 Texas starts with finished concrete dimensions. Measure the actual slab, footing, wall or pad rather than the entire excavation, gravel base or work zone. Select the project type above and enter the dimensions.
The calculator converts cubic feet into cubic yards and applies an optional planning allowance. Small projects can be translated into bag quantities, while larger pours can be checked against 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.
Rectangular slabs use length × width × thickness. If length and width are measured in feet and thickness is entered in inches, divide thickness by 12 before multiplication.
Use finished dimensions for patios, driveway sections, garage floors and other 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 increment.
Driveways and patios are often easy to estimate as rectangular sections. If a driveway widens, contains a parking pad or has changes in thickness, calculate each section separately so the total matches the actual concrete footprint.
| 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 the Rectangular Concrete Calculator for several straight-sided sections.
The Footing & Pad panel estimates square or rectangular footings under posts, columns and other supports. Enter the dimensions of one footing, then multiply by the number of identical footings.
Convert inch-based depth to feet before calculating cubic feet.
Use the Concrete Footing Calculator for dedicated footing geometry. Final footing dimensions and reinforcement should come from the project design.
Straight walls and curbs with constant cross-section can be estimated as rectangular prisms. Multiply total length by height and thickness. Where the dimensions change, calculate each portion separately.
Divide thickness in inches by 12 before multiplying.
Use the Concrete Wall Calculator for wall-specific volume planning.
Small repair areas and isolated pads may be manageable with bagged concrete. Multi-yard slabs can require many bags and mixer cycles, so ready-mix may be more practical for continuous placements.
| 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 and route. Enter the supplier's usable capacity rather than assuming every truck carries the same volume.
The last load may be partial and may have different pricing or minimum-load charges.
For short-load fees and truck spacing, use the Concrete Delivery Calculator.
Ready-mix concrete cost can change with mix, order size, delivery distance, fuel, minimum-load rules and supplier policies. The calculator therefore leaves the local price field editable rather than hard-coding a Texas price.
Add per-truck delivery fees when applicable. Pumping, labor, reinforcement, finishing and permits are separate.
Texas concrete projects do not follow one single local permit process. Cities, counties and other jurisdictions can administer building permits, inspections and local code amendments, so the correct authority depends on the property location and project type. Texas energy-code guidance specifically notes that local jurisdictions are responsible for implementation and enforcement, and Texas is a home-rule state that allows local jurisdictions to adopt amendments where permitted.
That means a slab, foundation, retaining wall, driveway, commercial project or structural concrete job should be checked with the city or county that has jurisdiction over the property. Use this calculator for material quantity, then confirm the local permit, code edition, inspection sequence and approved construction documents before regulated work begins.
Inspection requirements vary by jurisdiction and project. In many Texas cities, permitted footing, foundation, slab, wall and structural work must be inspected at specific stages before concrete is placed or before work is covered. The exact sequence comes from the local permit, approved plans and building department.
Use the Concrete Pouring Checklist to organize forms, reinforcement, access, crew and materials, but do not use a cubic-yard result as permission to proceed with a pour. Always verify the required inspection stage with the authority having jurisdiction.
Texas concrete placements can face high temperatures, intense sun, dry winds and rapid evaporation. These conditions do not change the geometric volume calculation, but they can affect placement pace, finishing, curing and crew coordination. Large slabs and driveways can become difficult to place if trucks arrive faster than the site can handle them.
For warm-weather planning, use the Concrete Hot Weather Calculator where applicable. Prepare curing materials, tools, access and crew assignments before the first load arrives, and follow the specified concrete and curing requirements for the project.
Foundation work may contain strip footings, isolated pads, foundation walls, piers and slabs. Estimate each geometry separately instead of applying one average thickness to the entire foundation.
Related tools include the Concrete Foundation Calculator, Concrete Pier Calculator, Concrete Rebar Weight Calculator and Concrete Control Joint Calculator.
Texas projects range from compact urban lots to rural sites, new subdivisions, ranch properties and large commercial developments. Before ordering ready-mix, confirm where the truck can stage, whether the mixer can reach the discharge point, whether a pump is needed and how quickly the crew can place each load.
For larger pours, coordinate truck spacing so concrete does not arrive faster than it can be discharged and finished. Use the Concrete Delivery Calculator for load planning and the Concrete Mixer Capacity Calculator for site-mixed batches.
Concrete volume is only one part of coastal construction planning. The Texas Department of Insurance Windstorm Inspection Program applies special building standards in designated catastrophe areas along the Texas coast when construction must qualify for windstorm insurance coverage through TWIA.
TDI states that, starting April 1, 2026, Windstorm Certificate of Compliance applications must be certified to either the 2024 International Residential Code or 2024 International Building Code for applicable windstorm construction. These rules do not apply to every Texas concrete project, but they can matter for foundations, structural work and additions in designated coastal areas.
Concrete projects in Texas can face very different site conditions. Gulf Coast projects may involve coastal exposure and windstorm requirements; Central and North Texas projects can involve expansive soils; West Texas sites may be hot, dry and remote; and dense metro areas may have tight access or delivery restrictions.
The volume math is the same everywhere: measure the concrete geometry accurately, convert to cubic yards and add a project-appropriate planning allowance. The engineering, mix design, drainage, reinforcement and permit requirements should be handled separately for the actual location.
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 requirements.
Answers about Texas slabs, patios, driveways, footings, delivery, bags, cost, permits and inspections.