Estimate concrete supply cost from an actual quoted rate per cubic metre. Enter a known m³ quantity or calculate volume from slab, footing or cylindrical dimensions, then add waste, supplier order rounding, a minimum billable quantity and delivery or service fees. The calculator keeps the physical concrete quantity and commercial pricing assumptions separate so you can compare supplier quotes on the same basis.
Use Known Volume when you already have cubic metres, or calculate the concrete volume from project dimensions first. Enter the current supplier rate you have actually been quoted.
Your result will appear after you press Calculate Concrete Cost.
Effective cost per m³ includes the entered fees and any minimum-order effect.
The quoted A$/m³ rate is only one part of the final supply cost. Order rounding, minimum quantities and separate supplier fees can change the effective cost of a small load.
The base concrete rate can change even when the project volume is identical, because the supplied product and delivery conditions can be different.
Small loads can have different fee structures from larger, efficient deliveries.
Strength, slump, aggregate, admixtures and specialised products can affect the quoted rate.
Plant proximity, transport distance and regional supply conditions can affect pricing.
Transport, small-load, waiting, after-hours and other service fees may be separate.
The ordered volume is usually greater than the exact geometric volume.
Total project concrete cost divided by actual required m³ shows the all-in supply rate.
Concrete cost per cubic metre is usually calculated from the supplier's base rate multiplied by the quantity being billed, plus any separate delivery or service charges. The important part is deciding which cubic-metre quantity is being priced. The exact geometric requirement, the waste-adjusted quantity, the rounded order and the supplier's minimum billable quantity can all be different numbers.
Concrete Cost = Billable m³ × Quoted A$/m³ + Entered Service Fees
If the project physically needs 3.42 m³ after waste and the supplier accepts orders in 0.10 m³ increments, you may plan 3.50 m³. If the quoted concrete rate is A$X per m³, multiply X by 3.50 and add the specific delivery or service fees shown on the quote.
There is no reliable single national price that applies to all concrete orders. Boral currently directs users to quote or online ordering and publishes separate location-specific concrete service-fee schedules. Holcim also publishes current pricing and service-fee notices rather than one universal public base A$/m³ number. That makes an editable quote-based calculator more useful than a hard-coded average.
A generic market average can be misleading when the real project needs a different strength, low-slump or high-slump mix, pump mix, decorative concrete, block fill, special aggregate, admixture or delivery zone. Use your supplier quote as the pricing input.
Boral's current concrete calculator describes cubic metres as the standard unit for ordering concrete. It recommends using project dimensions to estimate m³ and confirming final quantities with the contractor or supplier. This calculator follows the same metric basis and then adds pricing logic.
Before pricing concrete, calculate how much the structure physically contains. A slab uses length × width × thickness. A rectangular footing uses length × width × depth. A round pad or cylindrical pier uses π × radius² × depth. More complex work should be broken into sections and added together.
For detailed geometry, use the Concrete Volume Calculator, Concrete Footing Calculator or Concrete Column Calculator.
Slab cost starts with area multiplied by concrete thickness. A 6 m × 4 m slab at 100 mm thick contains 2.40 m³ before allowance. If the slab includes edge beams, thickenings, ramps or pads, calculate those separately because they add volume without changing the main slab footprint.
Do not choose slab thickness from a cost calculator. Structural thickness and reinforcement belong to the project design. The cost tool prices the dimensions you enter; it does not decide whether those dimensions are appropriate.
Strip footing concrete can be calculated from total length × width × depth. Rough excavations can use more concrete than neat drawing dimensions if trenches become wider or deeper. Re-measure completed excavation where practical before placing the final order.
Round pads, piers and columns use cylindrical volume. Enter the actual diameter and depth, then multiply by quantity. If a post or structural insert displaces a meaningful volume, use a dedicated calculator or adjust the geometry separately rather than assuming the full hole is concrete.
A cost estimate based only on neat drawing volume can be low if the actual order includes contingency. Waste or overage can cover form irregularity, excavation variation, uneven subgrade, residual concrete in lines or other site-specific uncertainty. There is no universal percentage that suits every project.
Keep waste visible as a separate assumption. If the user enters 5%, the calculator shows the effect directly instead of hiding it inside a rounded volume.
A supplier may only accept or operationally use particular quantity increments. This page lets you model several increments, but that is a calculation setting rather than a claim about every supplier. Match the setting to the quote or ordering system you are using.
Small increments matter most on smaller jobs. Moving from 1.01 m³ to a 1.10 m³ order changes cost more proportionally than moving a 20.01 m³ project to 20.10 m³.
Some suppliers use minimum quantities, small-load fees or other conditions for low-volume deliveries. Instead of assuming one rule, the calculator provides an optional minimum billable quantity plus separate fee fields. If the supplier quote has no minimum, leave the field empty.
Boral currently publishes metropolitan and regional service-fee schedules and offers pay-as-you-go digital concrete ordering for selected orders from 1 m³ to 30 m³, while larger or more complex work can be quoted separately. These current supplier practices show why project-specific pricing inputs are preferable to a universal default.
Concrete cost per cubic metre can look inexpensive until separate fees are added. Depending on the supplier and order, charges can relate to transport, minimum loads, waiting, returned concrete, after-hours service, testing or other operational requirements. Enter only fees that actually appear on the quote.
Boral's current concrete fees page publishes national and location-specific charges, with regional service-fee schedules dated 1 July 2026. Holcim's current pricing page says concrete pricing and service fees were updated on 20 March 2026. These dates reinforce that supplier charges can change and should be checked at the time of ordering.
Two concrete products can have the same cubic-metre volume but different prices because their specifications are different. Strength grade, slump, aggregate size, cementitious system, admixtures, fibres, colour, low-carbon options and pump requirements can all affect what is supplied.
CCAA's Guide to Concrete Construction covers concrete constituents, mix design, manufacture, supply, specifying and ordering. Use the project specification and supplier product information rather than choosing concrete only from the cheapest A$/m³ rate.
Concrete is produced relatively close to the project because it is a time-sensitive material and transport is part of the supply process. CCAA notes that premixed concrete is made close to where it is used and that local sourcing helps control transportation cost. Plant location, regional demand and delivery distance can therefore influence a quote.
For this reason, a price from another city or state may be a poor comparison even when the mix specification looks similar.
The supplier's concrete rate is not the same as the total cost of a completed slab. Installed concrete can also include excavation, base preparation, formwork, reinforcement, pumping, labour, placement, finishing, curing, saw cutting, disposal, permits and access costs.
Use the Total Concrete Cost Calculator for broader project budgeting. This page focuses on concrete supply and the supplier fees you enter.
A pump can be necessary where the truck cannot discharge directly to the slab. Pump hire, travel, minimum hours, line setup, labour, prime or washout can be quoted separately from the concrete supply. Add pump cost to the project budget rather than assuming it is included in A$/m³.
When comparing two concrete quotes, use the same concrete quantity, concrete specification and delivery assumptions. A quote for 4.0 m³ should not be compared directly with another based on 4.6 m³ unless you understand why the quantities differ.
Compare base A$/m³, billable quantity, GST treatment, delivery, small-load or other service fees and any time-based charges. The calculator's effective A$/m³ result helps show how fixed fees increase the apparent unit cost of a small project.
Effective A$/m³ = Total Concrete Supply Cost ÷ Physical Base Project m³
This metric is useful when comparing small loads. If a project physically needs 1.0 m³ but minimum-load and delivery rules produce a much larger bill, the effective project rate can be far above the advertised or quoted base rate.
Check whether the supplier price is GST-inclusive or GST-exclusive. Mixing inclusive and exclusive prices makes quote comparisons inaccurate. The calculator lets you either treat entered values as GST-inclusive or add 10% GST to all entered price fields.
| Scenario | Physical Volume | Pricing Input | Extra Cost Driver |
|---|---|---|---|
| Small Pad | Less than 1 m³ | Quoted A$/m³ | Minimum / small-load fees may matter most |
| Garage Slab | Several m³ | Quoted standard concrete rate | Delivery + pump may be separate |
| Footing Pour | Measured trench volume | Quoted structural concrete rate | Over-excavation can raise m³ |
| Decorative Patio | Slab volume | Decorative-product rate | Product premium + finishing |
| Large Project | High m³ quantity | Project quote | Staged deliveries and commercial terms |
Bagged concrete can be converted to an equivalent finished-volume cost, but the calculation needs the exact yield of the product. Divide the bag price by finished litres or m³ yielded by one bag, then compare that with ready-mix supply on the same volume basis.
Bagged products often make sense for very small volumes because they avoid truck delivery, while ready mix becomes more practical as volume and continuous placement requirements increase. Use the Quikrete Bags Calculator for product-specific bag quantities.
Concrete is priced by volume, not just square metres. A 50 m² slab at 100 mm thick contains 5.0 m³; the same 50 m² at 150 mm thick contains 7.5 m³. That 50% volume increase directly changes concrete supply cost before any other project cost changes.
Early cost estimates may use drawing dimensions. Before the final order, recheck formwork and excavation where practical. Forms can move, trench widths can increase and site levels can change after rain or rework. Accurate pricing still depends on accurate volume.
A concrete order in Sydney, Brisbane, Melbourne, Perth, Adelaide, Darwin or a regional town should not be expected to use the same A$/m³ rate. Concrete is a locally produced, time-sensitive material, so batching-plant location, delivery distance, fleet availability, local demand and regional input costs can all influence a quote.
This is why location pages and supplier quote tools are more useful than one national average. If you are budgeting a job before obtaining quotes, use a range only as an early planning assumption and replace it with a current local rate before making a purchase decision.
The concrete itself may have one base rate while transport or service charges reflect how the order is delivered. A project close to a batching plant can have different logistics from a remote site, a difficult access location or a job requiring staged deliveries. Supplier terms determine whether transport is included in the base rate or shown separately.
When a quote lists transport separately, place it in the Delivery / Service Fees field instead of inflating the A$/m³ rate. Keeping the components separate makes quote comparisons clearer.
Small concrete jobs often have a higher effective cost per cubic metre because fixed delivery or minimum-load charges are spread across fewer physical cubic metres. A 0.8 m³ pad and an 8 m³ slab may use a similar type of concrete, but the small project can carry a much larger fee burden per m³.
Use the effective-rate result rather than looking only at the quoted base rate. That number exposes the real supply cost of the physical concrete your project needs.
Larger pours can reduce the effect of fixed fees per cubic metre, but other commercial factors become more important. Multiple trucks, staged placement, pump scheduling, waiting time, testing, site access and production capacity can affect the total. Large projects may also be priced through a negotiated project quote rather than a simple cash-sale rate.
For a large pour, compare not only unit price but also delivery sequence, plant capacity, cancellation terms, waiting charges and the concrete specification being supplied.
Bagged concrete and ready mix should be compared on finished volume, not bag weight. If a packaged product yields a stated number of litres per bag, calculate how many bags are needed for one cubic metre, multiply by bag price and then compare the finished-volume cost with a delivered ready-mix quote.
Bagged concrete can remain practical for a few post holes, repairs or a tiny pad because it avoids truck logistics. As volume increases, the number of bags, manual mixing time, handling and consistency become more important. The cheapest material-only rate is not always the cheapest total project method.
The A$/m³ concrete rate usually represents supplied concrete rather than all labour required to build the slab. A concreter may separately charge for site preparation, forms, reinforcement, pumping, placing, screeding, floating, edging, trowelling, brooming, saw cutting, curing and cleanup.
If a contractor quote includes both concrete and labour, do not compare its total directly with a supplier's concrete-only A$/m³ rate. Separate the scope first so both quotes cover the same work.
Reinforcing mesh, bars, trench mesh, chairs and tying labour are separate from concrete volume. Two slabs can use the same m³ but have very different reinforcement requirements and installed costs. Keep reinforcement in a separate budget category unless the contractor quote clearly includes it.
Formwork can be a significant cost for elevated, complex, curved or heavily stepped concrete even when the concrete volume is modest. Ground slabs with simple straight edges may require much less formwork than walls, stairs or suspended elements.
The concrete cost calculator should therefore be treated as a material-supply calculator, not a full structural concrete quote.
Coloured, exposed-aggregate, polished, architectural and other decorative concretes can use different products and pricing from standard structural concrete. Pigments, selected aggregates, special batching, finishing requirements and sample approvals can all affect cost.
Do not apply a standard-concrete rate to decorative work unless the supplier has confirmed that rate for the exact product.
Australian suppliers increasingly offer lower-carbon concrete products and different cementitious systems. These mixes can have different commercial pricing and project requirements. Compare products on the specification actually required rather than assuming every lower-carbon option has the same rate as a conventional mix.
| Quote Item | Supplier A | Supplier B | What To Check |
|---|---|---|---|
| Concrete Rate | Enter quoted A$/m³ | Enter quoted A$/m³ | Same mix specification? |
| Billable Quantity | Quoted m³ | Quoted m³ | Same waste and rounding? |
| Delivery / Transport | Included or separate | Included or separate | Same delivery address? |
| Small-Load Fee | If applicable | If applicable | Same minimum rule? |
| Waiting / Time Fees | Supplier terms | Supplier terms | Same discharge assumptions? |
| GST | Included / excluded | Included / excluded | Compare on one tax basis |
| Total Supply Cost | Calculated total | Calculated total | Same scope? |
Imagine one supplier has a lower base rate but higher fixed service charges, while another has a slightly higher base rate and lower fees. On a small job, the second supplier can still produce a lower total. On a large job, the base rate may become more important because fixed charges are spread across more cubic metres.
The calculator is designed for this comparison: enter each supplier's rate and fees separately while keeping the physical project volume unchanged.
If a contractor has given you an expected concrete volume but not a material breakdown, enter that m³ in Known Volume mode. Add the supplier rate and fees you are comparing. This gives a concrete-supply benchmark that can help you understand one part of the contractor's total quote.
It does not prove whether the contractor quote is high or low because labour, plant, risk, overhead, reinforcement, formwork and finishing may be included separately.
First calculate a realistic project m³. Then contact local suppliers using the same quantity and specification. Ask each supplier to clarify the concrete rate, GST basis, delivery charge, minimum-load rule, order increment and any fees likely to apply.
Enter those values into the calculator one quote at a time. Saving the PDF result for each quote creates a consistent comparison record.
Common questions about A$/m³ rates, delivery fees, minimum loads, concrete specifications and total project cost.
Multiply the billable cubic metres by the quoted concrete rate per m³, then add applicable delivery or service fees.
There is no single reliable national order price because rates vary by location, product, quantity, specification and service fees. Use a current local supplier quote.
A default could be misleading. Major suppliers use current quote-based pricing and location-specific fees, so the calculator requires the user to enter the actual rate being compared.
Yes. Australian ready-mix planning and ordering commonly uses cubic metres (m³).
Only if you enter the delivery or service fee. The base A$/m³ field and fee fields are kept separate so the estimate matches the quote structure.
No, unless you manually include the pump quote in the additional fee field. Pumping is often priced separately.
It is the total concrete supply cost divided by the physical base project volume. It shows how fixed fees and minimum orders affect smaller jobs.
They can have a higher effective rate if minimum-load or service fees apply. Check the supplier's current terms.
It can. Strength, slump, aggregate, admixtures and specialised mix requirements can change the supplier quote.
If your final order includes a contingency, include it so the cost estimate is based on the volume you expect to order rather than only neat geometric volume.
You can treat entered prices as GST-inclusive or select the option to add 10% GST to the entered rate and fees.
The blurred zero is only a placeholder. It is not a real field value, so typing 250 gives 250 rather than 0250.
Use current supplier quotes and service-fee schedules alongside concrete technical guidance.
Current national, metropolitan and regional concrete service-fee information with 2026 location schedules.
View Current Boral FeesCurrent Australian supplier information describing cubic metres as the standard ordering unit and providing quote/order pathways.
View Boral CalculatorCurrent concrete pricing notice and service-fee/surcharge information updated in 2026.
View Holcim Pricing InformationAustralian technical guidance covering concrete constituents, supply, specifying, ordering, site practices and performance.
View CCAA Guide