Total Concrete Volume to Order
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Including wastage allowance
Instant m³ volume, 20kg bag count & Townsville cost estimates
Planning a slab, driveway, footing or post holes in Townsville? Our free Townsville concrete calculator delivers accurate cubic metre volumes, bag counts and 2026 North Queensland cost estimates — built for tropical conditions.
Townsville's tropical climate places unique demands on concrete — extreme heat, monsoonal rainfall and high humidity all affect mix selection and curing. Our free calculator helps you estimate volumes, bag counts and costs accurately before you call a Townsville concrete supplier.
Our Townsville concrete calculator uses standard Australian formulas for slabs, driveways, strip footings and post holes. Enter your dimensions in metres and millimetres and get instant cubic metre (m³) results — ready to use when ordering from Townsville local suppliers like Platinum Concreting or Easy Concrete Supply.
Ready-mix concrete in Townsville costs between $180 and $300 per m³ in 2026, depending on MPa grade, aggregate size, delivery distance and project type. Our calculator gives you a realistic cost range based on current Townsville and North Queensland market pricing so you can budget with confidence.
Townsville's hot, humid climate demands specific concrete mixes. Concrete poured in Townsville's wet season or summer heat requires retarding admixtures to extend workability. Our guide covers tropical concreting best practices, including hot weather pouring tips specific to North Queensland's challenging conditions.
Select your project type, enter dimensions, and get instant Townsville concrete estimates
All Townsville concrete suppliers price and deliver by the cubic metre (m³). Our Townsville concrete calculator converts your project dimensions directly into m³ volume so you can order accurately from any North Queensland ready-mix supplier. For internal links, also see our Aggregate Quantity Calculator to estimate your sub-base materials.
Example: A 6m × 3m Townsville driveway at 150mm thick = 6 × 3 × 0.15 = 2.7 m³ — plus 10% wastage = 2.97 m³ to order
Example: 20m of footing at 300mm wide × 300mm deep = 20 × 0.3 × 0.3 = 1.8 m³
Example: 6 holes, 300mm dia, 100mm post, 600mm deep = 6 × π × 0.6 × (0.15² − 0.05²) = ≈ 0.226 m³
Concrete costs in Townsville vary by grade, delivery distance, and whether you are using a ready-mix truck or bagged premix from a hardware store. Use this reference table to estimate your project budget before getting quotes from local Townsville concreters.
| Project Type | Typical Area / Size | Volume (m³) | 20kg Bags | Material Cost Est. | Installed Cost (Townsville 2026) |
|---|---|---|---|---|---|
| Garden Path | 10 m² @ 80mm | 0.8 m³ | ~87 bags | $144–$240 | $600–$1,100 |
| Backyard Patio / Slab | 20 m² @ 100mm | 2.0 m³ | ~216 bags | $360–$600 | $1,600–$3,000 |
| Single Driveway | 30 m² @ 150mm | 4.5 m³ | ~486 bags | $810–$1,350 | $3,500–$6,500 |
| Double Driveway | 50 m² @ 150mm | 7.5 m³ | ~810 bags | $1,350–$2,250 | $6,000–$10,500 |
| Garage Slab | 36 m² @ 150mm | 5.4 m³ | ~583 bags | $972–$1,620 | $4,000–$8,000 |
| House Slab (small) | 100 m² @ 150mm | 15.0 m³ | ~1,620 bags | $2,700–$4,500 | $10,000–$20,000 |
| Strip Footings | 30m run @ 300×300mm | 2.7 m³ | ~292 bags | $486–$810 | $2,200–$4,500 |
| Shed Slab | 24 m² @ 100mm | 2.4 m³ | ~260 bags | $432–$720 | $2,000–$4,000 |
Concreting in Townsville requires special attention to North Queensland's tropical conditions. Understanding local grade requirements, minimum orders and tropical curing practices ensures your project meets Australian Standard AS 1379 and stands up to Townsville's climate for decades.
N25 is the most popular residential grade in Townsville, used for house slabs, driveways and shed floors. N20 suits garden paths and light-duty applications. For commercial slabs and areas subject to heavy traffic, N32 is standard. N40 is used for industrial floors, high-traffic areas and engineer-specified structural elements across North Queensland.
One cubic metre of concrete requires approximately 108 × 20kg premix bags, based on a yield of 0.0093 m³ per bag. For jobs under 0.6 m³, bagged premix from Bunnings Townsville or Total Tools is more cost-effective than a ready-mix truck. Townsville suppliers have a minimum order of 0.6 m³ for N20/N25 and 1.0 m³ for N32/N40.
Townsville's summer temperatures regularly exceed 35°C, which accelerates concrete setting and increases the risk of plastic shrinkage cracking. For pours during the October–April wet season, use a retarding admixture to extend workability. Always pre-wet formwork and sub-base, and cure with wet hessian or curing compound immediately after finishing.
Townsville's monsoonal wet season runs from November to April, bringing heavy rain that can damage fresh concrete. Never pour concrete if rain is forecast within 4 hours. If rain falls on fresh concrete before final set, cover with plastic sheeting immediately. Scheduling concrete pours in the dry season (May–September) is strongly recommended for large residential projects in Townsville.
Townsville ready-mix suppliers including Platinum Concreting and Easy Concrete Supply deliver from a minimum 0.6 m³ for N20 and N25 grades, and 1.0 m³ minimum for N32 and N40. Short-load fees apply for smaller orders. Concrete must be placed within 90 minutes of batching per AS 1379 requirements — plan your Townsville pour logistics accordingly.
In Townsville's tropical heat, concrete reaches initial set in as little as 2–4 hours — faster than southern Australian cities. Moist curing for a minimum of 7 days is essential, especially in the dry season when evaporation rates are extreme. Cover slabs with wet hessian or curing blankets and keep them damp to achieve full 28-day design strength.
Selecting the correct MPa grade for your Townsville project ensures structural adequacy and long-term durability in North Queensland's demanding tropical environment. Always confirm your grade selection with your Townsville concreter or structural engineer.
| Concrete Grade | Strength (MPa) | Common Townsville Use | Price Range (per m³) | Notes |
|---|---|---|---|---|
| N20 | 20 MPa | Paths, garden edging, light-duty | $180–$210 | Min order 0.6 m³; not for driveways |
| N25 | 25 MPa | House slabs, driveways, shed floors | $200–$240 | Most popular Townsville residential grade |
| N32 | 32 MPa | Commercial slabs, heavy driveways | $230–$265 | Min order 1.0 m³; trucks & boats rated |
| N40 | 40 MPa | Industrial floors, structural elements | $255–$300 | Engineer specified; high-traffic areas |
| Rapid Set | Varies | Time-sensitive repairs and pours | $260–$320+ | Achieves strength faster in tropical heat |
Townsville concreters recommend a minimum 5–10% wastage allowance on all ready-mix orders. Uneven sub-bases, flexible formwork and ground variations all consume extra concrete. Running short mid-pour in Townsville's heat creates cold joints — a serious structural defect that is expensive to rectify and may require full slab replacement.
Townsville suppliers enforce minimum orders of 0.6 m³ for N20/N25 and 1.0 m³ for N32/N40. If your calculated volume falls just under a threshold, rounding up is often more economical than paying a short-load surcharge. Use leftover concrete for garden edging, post holes, or driveway patch repairs.
Townsville City Council requires a Operational Works permit for concrete work involving stormwater drainage changes or driveways crossing council footpaths. Residential patios, shed slabs and internal pathways within your property boundary generally do not require council approval. Always verify with Townsville City Council before commencing any concrete work near boundaries or drainage lines.
Access AS 1379 Specification for Ready-Mixed Concrete and AS 3600 Concrete Structures — the Australian Standards that govern all Townsville concrete projects and quality requirements.
Visit Standards Australia →Check permit requirements, driveway crossing approvals, operational works applications and development conditions for concrete projects across Townsville's suburbs and surrounding LGA.
Townsville City Council →Before hiring a Townsville concreter, verify their contractor licence with the Queensland Building and Construction Commission. Concrete work over $3,300 in Queensland requires a licensed contractor.
Check QBCC Licences →CCAA offers free technical guides on tropical concreting, hot weather practices, curing techniques and mix design — essential reading for DIY and professional Townsville concrete projects.
Visit CCAA →