Jacksonville Concrete Calculator
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Jacksonville FL
Concrete Calculator — Yards, Bags & Cost
Calculate cubic yards, bags needed, and Duval County-accurate ready-mix costs for driveways, patios, foundations, garage slabs & footings in Jacksonville, FL.
$148
Avg Duval County Ready-Mix (per Cu Yd)
3,000
Min PSI — Jacksonville FL Residential
12 in
Frost Depth — Duval County FL Code
CILB
FL Construction Industry Licensing Board
🚗 Driveway
🏠 Garage Slab
🛤️ Patio / Flatwork
🏗️ Foundation
🪨 Footings
🏢 Commercial Slab
The Jacksonville FL Concrete Calculator estimates cubic yards, bags, and ready-mix costs for any project in Jacksonville, Duval County. Jacksonville is the largest city by area in the contiguous U.S. and Florida’s most populous city — a major construction hub in Northeast Florida. Key local factors: 3,000 PSI minimum for residential concrete (no air entrainment needed — Florida has no significant freeze-thaw cycles), a 12-inch frost depth per Duval County/FBC code, sandy and clay loam soils near the St. Johns River with high water table concerns in many neighborhoods, and all contractor licensing managed by the CILB (Construction Industry Licensing Board) at myfloridalicense.com. Ready-mix pricing in Duval County runs $135–$165/yd. Explore more tools at Concrete Toolkit.
Jacksonville FL Concrete Calculator
☀️ FL-Accurate Pricing · Duval County · FBC · High Water Table · CILB
Jacksonville FL Concrete Calculator
Cubic yards, bags & Duval County ready-mix cost — instant results
🚗 Driveway
🏠 Garage Slab
🛤️ Patio
🏗️ Foundation
🪨 Footings
Enter dimensions for instant Jacksonville volume, bag count, and material cost.
Driveway: 4 in., 3,000 PSI. No air entrainment needed in Jacksonville’s mild climate. Vapor barrier required over sandy FL soils. High water table — verify subgrade drainage. CILB-licensed contractor required. FBC compliant.
Driveway 4 in · Garage 4–5 in · Patio 4 in · Foundation 6 in · Footings 12+ in deep
Cubic Yards Required
—
Including waste factor
📋 Project Summary
💵 Duval County Cost Estimate
📐 Jacksonville FL Driveway Cross-Section — Florida / Northeast FL Standard Layers
Broom Finish · Control Joints Every 8–10 ft · Seal After 28-Day Cure · Jacksonville FL Duval County
Concrete — 4 in. (Jacksonville FL Driveway Standard)
3,000 PSI · No Air Entrainment · #3/#4 Rebar · W/C ≤ 0.50 · FBC
⬛ #3 or #4 Rebar Grid — Florida Building Code · Wind / Hurricane Load Zone · Duval County FL
🪨 4 in. Compacted Crushed Limestone / Limerock Base — Standard NE Florida Base Course
🟤 Sandy / Clay-Loam Subgrade — St. Johns River Basin · Variable Water Table · NE FL Soils
💧 Vapor Barrier — Required Over FL Sandy Soils with High Water Table
Frost Depth 12 in. · Duval County FL · Florida Building Code (FBC) · Wind Zone II
27Cu ft per cubic yard
4580 lb bags per cu yd
$148Avg Duval Co. ready-mix / yd
Concrete Slab
Rebar
Limerock Base
Sandy Subgrade
Vapor Barrier
Jacksonville FL Concrete — Key Facts
Jacksonville spans over 874 square miles, making it the largest city by land area in the contiguous U.S. — a vast construction market with projects ranging from waterfront condos downtown to sprawling suburban residential developments in Mandarin, Southside, and the Beaches. Jacksonville’s concrete environment is defined by its humid subtropical climate: hot summers (highs 90–95°F May–September), mild winters with virtually no freeze-thaw concern, and frequent summer thunderstorms and tropical weather requiring careful concrete curing planning. The Florida Building Code (FBC) governs all construction and mandates licensed contractors through the CILB.
☀️ Jacksonville FL Minimum Concrete Requirements
Exterior flatwork: 3,000 PSI minimum — no air entrainment required (Jacksonville has no meaningful freeze-thaw cycles) · W/C ≤ 0.50 · Driveways: 4 in. minimum · Garage floors: 4 in., vapor barrier required · Foundations: 3,000–4,000 PSI, 6 in.; vapor barrier mandatory; geotech review for high-water-table and low-lying St. Johns River corridor sites · Footings: 12-inch minimum frost depth per Duval County / FBC — very shallow by U.S. standards · Hot weather: ACI 305 procedures required May–October for Jacksonville’s heat and humidity — pre-wet subgrade, morning pours preferred, wet-cure immediately · All contractors must hold CILB registration — verify at myfloridalicense.com.
🚗 Jacksonville Driveway
Standard 20×20 ft at 4 in. = ~5.5 cu yd of 3,000 PSI concrete. No air entrainment needed. Use limerock or crushed concrete base. Installed cost: $8–$13/sq ft in the Jacksonville market. Avoid afternoon pours in summer — high heat causes rapid moisture loss and plastic shrinkage cracking. Use curing compound or wet burlap immediately after finishing.
🏠 Jacksonville Garage Floor
20×22 ft at 4–5 in. = ~5.4–6.7 cu yd. Vapor barrier mandatory over FL sandy soils. 3,000–4,000 PSI. Seal with acrylic or epoxy after 28-day cure. Jacksonville’s humidity and ground moisture can cause significant vapor transmission through unsealed garage slabs. Installed cost: $9–$15/sq ft.
🏗️ Jacksonville Foundation & Water Table
Jacksonville has a high water table in many areas — particularly Westside, the Beaches, Northside near the Nassau River, and any low-lying St. Johns River tributary neighborhoods. Foundation design in these areas must account for hydrostatic pressure and proper drainage. A geotechnical investigation is strongly recommended for any new foundation in flood zone or low-elevation areas.
How to Calculate Concrete — Jacksonville FL
Measure length and width in feet, thickness in inches. Jacksonville’s sandy soils can be uneven after stripping — always order at least 10% extra. Short-load fees in the Duval County market run $150–$280/ticket.
📐 Jacksonville FL Concrete Volume Formula
Volume (cu ft) = Length (ft) × Width (ft) × [Thickness (in) ÷ 12]
Volume (cu yd) = Volume (cu ft) ÷ 27
Order Qty = CEIL[ Volume (cu yd) × Waste Factor ]
Example: 20 × 20 ft × 4 in = 133.3 cu ft = 4.94 cu yd → Order 5.4 cu yd (10% waste)
⚠️ Jacksonville FL Concrete Hazards — Quick Summary
Hot weather pours (ACI 305): Jacksonville’s May–October heat and humidity cause rapid evaporation — always pour in early morning, pre-wet subgrade, use a retarder in the mix for large pours, and apply curing compound immediately after finishing. Never pour concrete when the evaporation rate exceeds 0.20 lb/ft²/hr. High water table: Sandy FL soils and a shallow water table in many Jacksonville neighborhoods can cause subgrade instability — always compact and test before placing concrete. Hurricane/wind loads: Duval County is in FBC Wind Zone II — rebar and anchor bolt placement must comply with Florida Building Code wind provisions. Sandy subgrade: Fine Florida sand can erode under slabs over time — use a properly compacted limerock or crushed concrete base, and consider a fiber mesh addition for crack resistance.
Jacksonville FL Concrete Cost by Project Type
Current Duval County ready-mix pricing: $135–$165/yd. Installed costs exclude excavation, base, permits, and rebar.
| Project | Size | Thickness | Cu Yards | Material | Installed Est. | Notes |
|---|---|---|---|---|---|---|
| Driveway | 20×20 ft | 4 in. | ~5.5 yd | $814 | $1,800 – $3,000 | 3,000 PSI · No Air |
| Garage Floor | 20×22 ft | 4 in. | ~5.4 yd | $799 | $2,000 – $3,400 | 3,000 PSI + Vapor |
| Patio Slab | 16×20 ft | 4 in. | ~4.4 yd | $651 | $1,400 – $2,500 | 3,000 PSI · FBC |
| Foundation Slab | 1,500 sq ft | 6 in. | ~18.5 yd | $2,738 | $8,500 – $16,000 | Geotech · Water Table |
| Sidewalk | 4×40 ft | 4 in. | ~2.0 yd | $296 | $700 – $1,300 | 3,000 PSI · FBC |
| Pool Deck | 20×30 ft | 4 in. | ~8.1 yd | $1,199 | $3,200 – $6,500 | Broom / Exposed Agg. |
| Commercial | 40×60 ft | 6 in. | ~44.4 yd | $6,571 | $18,000 – $34,000 | 4,000–5,000 PSI · Eng. |
🚗 Driveway — 20×20 ft
Thickness4 in.
Cubic Yards~5.5 yd
Material$814
Installed Est.$1,800 – $3,000
Spec3,000 PSI · No Air
🏠 Garage Floor — 20×22 ft
Thickness4 in.
Cubic Yards~5.4 yd
Material$799
Installed Est.$2,000 – $3,400
Spec3,000 PSI + Vapor
🛤️ Patio — 16×20 ft
Thickness4 in.
Cubic Yards~4.4 yd
Material$651
Installed Est.$1,400 – $2,500
Spec3,000 PSI · FBC
🏗️ Foundation — 1,500 sq ft
Thickness6 in.
Cubic Yards~18.5 yd
Material$2,738
Installed Est.$8,500 – $16,000
NoteGeotech · Water Table
🏊 Pool Deck — 20×30 ft
Thickness4 in.
Cubic Yards~8.1 yd
Material$1,199
Installed Est.$3,200 – $6,500
SpecBroom / Exposed Agg.
🏢 Commercial — 40×60 ft
Thickness6 in.
Cubic Yards~44.4 yd
Material$6,571
Installed Est.$18,000 – $34,000
Spec4,000–5,000 PSI · Eng.
Jacksonville FL Concrete — FAQs
What PSI concrete do I need for a Jacksonville FL driveway?
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3,000 PSI is the Jacksonville residential standard — no air entrainment required since Florida has virtually no freeze-thaw cycling. For heavier-use driveways or RV pads, upgrade to 3,500 PSI. Keep W/C ratio at or below 0.50. Use a 4-inch limerock or crushed concrete base, place #3 or #4 rebar on 18-inch centers, and apply curing compound immediately after finishing — Jacksonville’s summer heat causes rapid surface moisture loss that leads to plastic shrinkage cracking if not controlled.
How much does concrete cost in Jacksonville FL?
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Ready-mix in Jacksonville / Duval County runs $135–$165/yd — below the national average due to Florida’s strong concrete supply market. Short-load fees for under 5 yards: $150–$280/ticket. Installed flatwork averages $8–$13/sq ft for plain broom finish. Pool deck concrete with broom or exposed aggregate finish runs $14–$22/sq ft. Always get at least three bids from CILB-licensed Jacksonville contractors.
How deep are footings in Jacksonville FL?
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The minimum footing depth in Jacksonville / Duval County is 12 inches below grade per the Florida Building Code — one of the shallowest frost depths in the U.S. due to Florida’s minimal freeze risk. However, footings must bear on stable undisturbed native soil — in areas near the St. Johns River and its tributaries with high water tables and soft alluvial soils, footings may need to be deeper to reach adequate bearing capacity. A soils investigation is recommended for any new foundation in low-lying or riverside Jacksonville neighborhoods.
Do I need a CILB license to pour concrete in Jacksonville FL?
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Yes. Florida requires all concrete contractors performing permitted work to hold a valid CILB (Construction Industry Licensing Board) license — either a Certified General Contractor, Certified Building Contractor, or a specialty Masonry/Concrete license. Verify any contractor free at myfloridalicense.com. The City of Jacksonville (COJ) and Duval County require permits for foundations, retaining walls, and most structural concrete — confirm with the City of Jacksonville Building Inspection Division at coj.net before starting any permitted project.
When is the best time to pour concrete in Jacksonville FL?
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October through April is Jacksonville’s ideal concrete season — cooler temperatures (60–80°F), lower humidity, and reduced afternoon thunderstorm risk make for the easiest and most reliable pours. During May–September, always pour early in the morning (before 9 AM if possible), pre-wet the subgrade and forms the evening before, use a set retarder in the mix for large pours, and apply curing compound or wet burlap immediately after finishing. Never pour during or immediately before a forecast thunderstorm — Jacksonville averages over 70 thunderstorm days per year, and rain on fresh concrete destroys the surface.
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Jacksonville FL Concrete Resources
Verify permits, CILB licenses, and site conditions before any pour.
🏛️
City of Jacksonville Building Inspection
Permits & Inspections · COJ
The City of Jacksonville Building Inspection Division manages permits and inspections for all residential and commercial concrete under the Florida Building Code. Required for foundations, retaining walls, structural slabs, and pool decks. Can advise on flood zone requirements for low-lying Duval County neighborhoods and wind zone provisions for concrete anchor bolts and rebar under FBC Wind Zone II.
CILB — FL Contractor License Lookup
License Verification · Free
The Florida Construction Industry Licensing Board (CILB) maintains the state’s contractor license database. Verify any Jacksonville concrete contractor’s license status, insurance, and disciplinary history free at myfloridalicense.com. Always request current certificates of general liability ($1M+) and workers’ comp insurance from the issuing insurer before signing any concrete contract in Jacksonville.
Sunshine 811 — FL Call Before You Dig
FL One Call · Required by Law
Florida law requires all excavators to call Sunshine 811 at least 2 business days before any digging or footing excavation. Jacksonville’s utility infrastructure is extensive — gas lines, water mains, and fiber optic cables are present throughout Duval County. Call 811 or visit sunshine811.com. The service is free and legally required for every Jacksonville concrete project involving any ground disturbance — including fence post holes and deck footings.