Slabs • Patios • Driveways • Footings • Posts
Use this Concrete Calculator in Georgetown to estimate cubic feet, cubic yards, concrete bags and material cost for Georgetown-area slabs, patios, driveways, sidewalks, footings, posts and other concrete projects. Enter your actual dimensions and local material price for a project-specific estimate.
Estimate slabs and patios, continuous footings, round posts/columns, or convert known square footage into bags and ready-mix cost.
Enter finished dimensions for a patio, driveway panel, garage slab, sidewalk section or other rectangular concrete flatwork.
Verify manufacturer bag yield.
Thickened edges, footings, steps and other deeper concrete sections should be calculated separately.
Estimate a uniform continuous footing, grade beam or strip foundation.
Estimate concrete for cylindrical posts, piers and round columns.
Already know the square footage? Convert area and slab thickness into cubic yards, bag quantity and material cost.
The calculator works from geometry, so the first step is measuring the actual concrete dimensions. For a slab, patio or driveway panel, measure finished length and width and enter the planned slab thickness. For a footing, measure total continuous length and use the actual width and depth from the project design. For posts or piers, use the finished diameter and poured height/depth.
After calculating exact volume, compare it with an optional allowance. The allowance is not a mandatory Georgetown percentage—it simply gives you a larger planning quantity to compare against the mathematical volume.
Use finished concrete dimensions.
Slab, footing, round post or area.
Use the project-specific concrete thickness.
Enter an Georgetown-area supplier quote if desired.
Check permits, plans and field dimensions.
For most rectangular slabs, the concrete quantity formula is straightforward.
Cubic yards = cubic feet ÷ 27.
A 20 × 20 foot slab at 4 inches thick contains about 133.33 cubic feet, or approximately 4.94 cubic yards before an ordering allowance.
| Project | Example Size | Thickness | Approx. Concrete |
|---|---|---|---|
| Small Patio | 10 × 12 ft | 4 in | 1.48 yd³ |
| Patio / Slab | 12 × 20 ft | 4 in | 2.96 yd³ |
| Garage Floor | 20 × 20 ft | 4 in | 4.94 yd³ |
| Driveway Section | 20 × 30 ft | 5 in | 9.26 yd³ |
| Large Slab | 30 × 40 ft | 6 in | 22.22 yd³ |
These are geometric examples only. Actual thickness, reinforcement, base preparation and project design can differ.
Location-focused guidance without forcing a single local price.
Calculations use project dimensions rather than broad averages.
Compare bagged concrete for smaller pours.
Estimate cubic yards before requesting a supplier quote.
Slabs are among the most common concrete projects in Central Georgetown, including patios, garage floors, sheds, equipment pads and other flatwork. The slab calculator converts the surface footprint and thickness into concrete volume.
Do not use excavation depth as slab thickness. Excavation can also contain compacted base, drainage layers or other materials. Enter the actual concrete thickness shown on the project plan.
For a dedicated slab page, use the Concrete Slab Calculator. For floor-specific work, use the Concrete Floor Calculator.
For a rectangular patio, multiply length by width to get square footage, then multiply by slab thickness. Irregular patios can be divided into rectangles, circles or other simple shapes and calculated separately.
Use the Concrete Patio Calculator for circular and L-shaped patio geometry.
A driveway estimate should be based on the actual slab footprint and specified thickness. If the driveway contains thicker edge sections, an approach apron, turnarounds or separate pads, calculate those areas individually and add the cubic-yard totals.
Georgetown Development Services publishes a Driveway Access Permit application among its planning application checklists. If a new or modified driveway affects street access, curb, sidewalk, drainage or the public right-of-way, review the current City requirements before construction.
Official reference: Georgetown Application Checklists, Forms and Driveway Access Permit.
Continuous strip footings and grade beams are calculated from total length × width × depth. The calculator does not size a footing structurally. Soil conditions, loads, building type and code requirements can affect foundation design, so use dimensions from approved plans or qualified design guidance.
For more detail, use the Concrete Footing Calculator or Concrete Foundation Wall Calculator.
Round concrete posts and piers use the cylinder formula π × radius² × height. If the project includes an enlarged footing at the bottom, calculate that footing separately. For larger structural columns, use the Concrete Column Calculator.
Concrete prices can change by supplier, mix specification, delivery distance, order size and additional service charges. Rather than hard-coding a citywide price, the calculator lets you enter a current local quote per cubic yard.
For sealer quantities after the project is ready for treatment, use the Concrete Sealer Coverage Calculator.
The same cubic-yard equations apply in Downtown Georgetown, Sun City, Berry Creek, Wolf Ranch, Georgetown Village and other nearby areas. What changes are supplier pricing, delivery distance, site access, permit requirements, civil details and actual field dimensions.
Use this page for quantity planning, then confirm the mix specification, delivery schedule, permit requirements and construction details with the appropriate contractor, engineer, supplier and City department.
The City of Georgetown Development Services Department administers building permits and inspections. Its residential permit guidance states that a building permit is required to construct, enlarge, alter, repair, move, demolish or change the occupancy of a building or structure, subject to listed exemptions and project-specific rules.
The City's current Building Permits and Inspections page lists the 2021 International Building Code, 2021 International Residential Code and related adopted 2021 ICC-family codes. The exact provisions that apply depend on project type, scope and City amendments, so check the current adopted-code information before construction.
Official reference: Georgetown Building Permits and Inspections.
This Concrete Calculator in Georgetown is a material quantity estimator only. It does not size foundations, determine reinforcement or establish code compliance.
Central Texas heat can affect concrete placement even though it does not change the geometric quantity. High air and concrete temperatures, direct sun and wind can increase evaporation and slump loss and can shorten the time available for finishing. Delivery timing, crew size, shading, evaporation control and curing planning can become more important during hot weather.
For technical guidance, review ACI PRC-305-20: Guide to Hot Weather Concreting and NRMCA CIP 12: Hot Weather Concreting.
Use the Slab / Patio mode for patios, garage slabs, walkways and driveway sections. Use the Footing / Grade Beam mode for continuous foundation elements, and the Round Post / Column mode for cylindrical posts or piers. When a project contains several shapes, calculate each separately and combine the final cubic-yard quantities.
For large pours, use the Concrete Truck Count Calculator to estimate truckloads. If pumping is planned, use the Concrete Pump Capacity Calculator to compare placement needs.
The calculator assumes the concrete geometry matches the dimensions entered. Actual quantity can increase because of uneven excavation, low spots, thickened edges, grade changes or over-excavation. Verify the subgrade, compacted base, form dimensions and drainage details before ordering ready-mix.
Georgetown publishes drainage criteria and development standards for applicable projects. This calculator does not design drainage, pavement structure, reinforcement or foundation systems.
For warm-season placement, review ACI PRC-305-20 and NRMCA CIP 12. These resources address batching, transport, placement, evaporation, finishing and curing issues that can matter during Central Texas heat.
Public streets, sidewalks, curb-and-gutter, drainage structures and other civil improvements within Georgetown should follow approved plans and the City's current construction requirements. Georgetown Systems Engineering publishes Construction Specifications and Standards that provide guidance for public and private development infrastructure.
Official City resource: Georgetown Construction Specifications and Standards.
For work governed by the Texas Department of Transportation, use the TxDOT 2024 Standard Specifications, which TxDOT identifies for projects letting beginning in Fiscal Year 2025.
The same cubic-yard formulas apply in Downtown Georgetown, Sun City, Berry Creek, Wolf Ranch, Georgetown Village, Williams Drive and nearby Williamson County communities. What changes are supplier pricing, delivery distance, site access, permit requirements and actual field dimensions.
Use this page for quantity planning, then confirm mix specifications, delivery timing, permit requirements and construction details with the appropriate contractor, supplier, engineer and City department.
Ready-mix pricing can vary with mix specification, order size, delivery distance, fuel, short-load charges, waiting time and pumping needs. For that reason, the cost field in this Georgetown concrete calculator is editable instead of relying on one fixed local price.
Enter the current price per cubic yard from the supplier you plan to use. The result estimates concrete material only and does not include reinforcement, excavation, forms, labor, pump rental, permits, testing, finishing or curing.
A concrete calculator is mathematically accurate when the entered dimensions match the actual formed or excavated geometry. The biggest estimating errors usually come from incorrect thickness, irregular shapes, uneven excavation or omitted thickened sections—not from the cubic-yard conversion itself.
Re-measure the project immediately before ordering, calculate irregular sections separately and confirm the supplier's minimum-load and delivery policies. A practical ordering allowance can help cover ordinary field variation, but it should not replace accurate measurement.
Concrete quantity comes from finished project dimensions. Weather affects placement and curing procedures, not the basic geometric volume.
Suppose a Georgetown residential slab is 12 feet by 20 feet and 4 inches thick. The area is 240 square feet, and the thickness is one-third of a foot.
With a 10% planning allowance, the calculator shows about 3.26 cubic yards.
Common questions about Georgetown concrete yards, slabs, patios, driveways, bags, cost and permits.