Turn Concrete Volume Into Delivery Loads
Use this Concrete Truck Load Calculator to estimate how many ready-mix truck loads a concrete project may require. Enter cubic yards directly or calculate volume from slab dimensions, choose your supplier's usable truck capacity, add a planning allowance, and review full loads, the final partial load, delivered volume and optional concrete delivery cost.
Estimate truck loads from a known concrete volume, calculate a slab first, reverse-calculate delivered volume, or model delivery cost and short-load charges.
Enter the total cubic yards required and the usable capacity of the trucks your supplier plans to send.
Confirm actual deliverable quantity with supplier
Optional scheduling estimate
Planning estimate only. Confirm mix design, order volume, truck payload, legal loading, supplier minimums, jobsite access, discharge method and delivery sequence directly with the ready-mix producer before scheduling a pour.
Calculate slab cubic yards from dimensions, then estimate the number of ready-mix deliveries.
Estimate total delivered concrete from full trucks plus an optional partial final truck.
Enter 0 if there is no partial delivery
Model material cost, per-truck delivery charges and an optional short-load fee on the final partial delivery.
Supplier-specific; enter your quoted threshold
Short-load definitions, minimum orders, environmental charges, fuel surcharges, waiting time, Saturday fees, returned-concrete charges and delivery rates vary by producer and market. Enter supplier-quoted values rather than treating defaults as prices.
A Concrete Truck Load Calculator connects the volume of a project with the practical delivery capacity available from a ready-mix supplier. The basic math is simple: divide the concrete quantity by the usable volume per truck, then round up because a fraction of a delivery normally means another truck trip. The details matter, however, because the physical mixer drum size and the quantity a truck may legally or practically deliver are not always the same thing.
That is why this page does not lock every project to one universal “10-yard truck.” Modern mixer equipment can be built in several sizes and axle configurations. A compact mixer may be designed around a small-volume barrel, while larger front-discharge mixers can have drums in the 10- to 11-cubic-yard class. Actual payload can still depend on local weight regulations, axle configuration, concrete unit weight and producer policy. The safest estimating approach is to ask the supplier how many cubic yards it expects to place on each truck for your specific order and enter that value in the calculator.
The calculator also separates full loads from the final partial load so you can discuss that last delivery with the producer.
Estimate the number of deliveries from required volume and supplier-confirmed usable capacity.
See how many cubic yards remain after full truck loads are allocated.
Use an optional truck interval to estimate the planned window between first and last arrivals.
Combine material price, delivery charges and supplier-specific short-load fees.
There is no single answer that applies to every mixer truck. The useful number for a contractor is the actual quantity the producer will deliver on each truck. Truck manufacturers offer different drum sizes, chassis arrangements and axle configurations, and road-weight rules can affect payload. For example, ADVANCE currently lists a compact Cadet mixer with a 4-cubic-yard barrel. Its Commander and Charger families include equipment with 10.5- and 11-cubic-yard drums, showing why truck size should be treated as a variable rather than a universal constant.
A drum rating also should not automatically be interpreted as the deliverable payload on your project. A manufacturer may publish physical or rated mixer capacity, while the ready-mix producer must determine how much concrete the vehicle can carry under the conditions that apply to the delivery. Heavyweight concrete, local bridge formulas, road restrictions or different axle configurations can change the legal or practical load. Enter the supplier's quoted usable quantity into this calculator.
| Planning Scenario | Capacity Input | What Calculator Does | What You Must Verify |
|---|---|---|---|
| Compact / Short Load | Example: 4 yd³ | Divides project volume by 4 | Truck availability and producer policy |
| Medium Delivery | Supplier-specific | Uses exact number you enter | Legal / usable payload |
| Larger Mixer | Example input: 10–11 yd³ | Calculates full and final loads | Actual delivered quantity per trip |
| Heavy Mix / Restricted Route | Supplier-adjusted | Recalculates automatically | Weight and route limitations |
Suppose a project needs 24 cubic yards of concrete after the project quantity has already been finalized. If the supplier confirms that the trucks for that order will carry 10 cubic yards each, the mathematical result is 24 ÷ 10 = 2.4 truck loads. Because the project cannot be completed with 0.4 of a truck trip by itself, the delivery plan becomes three truck trips: two 10-yard full loads and one 4-yard final load.
If the contractor instead enters a 10% planning allowance before ordering, 24 cubic yards becomes 26.4 cubic yards. With the same 10-yard usable capacity, the calculator returns three truck trips: two full 10-yard loads and a final 6.4-yard load. Whether 10% is appropriate is a separate project decision. The calculator simply applies the percentage the user selects.
If cubic yards are not known yet, use the Slab → Truck Loads mode. It calculates square footage from length and width, converts the entered slab thickness from inches to feet, calculates cubic feet, divides by 27 to obtain cubic yards, applies the selected planning allowance, and finally divides by truck capacity.
Calculate thickened edges, footings, grade beams or other deeper elements separately when they are not represented by the uniform slab thickness.
For a more detailed area takeoff, use the Concrete Square Foot Calculator. For multi-shape project volume, use the Concrete Calculator before transferring the final cubic-yard quantity into this truck-load tool.
The final truck frequently determines how smoothly a delivery plan works. A project may need two nearly full trucks and a much smaller third load. Some producers use minimum-order rules or short-load charges for quantities below a defined threshold. Those policies are commercial terms rather than universal concrete rules, so the calculator does not assume one fixed fee or threshold. The Delivery Cost mode allows you to enter the threshold and fee from your supplier's quote.
A short final load may still be the right decision if it prevents a pour from running short. Ordering too little concrete can interrupt placement, create an unplanned construction joint, increase labor time and trigger another delivery. Ordering too much can create returned-concrete, disposal or cleanup issues. Final quantity planning should therefore combine geometry, field conditions and supplier communication rather than trying to optimize only the number of full trucks.
Knowing the number of trucks is not the same as knowing the correct delivery interval. Truck spacing should reflect the rate at which the crew, pump, conveyor, buggy operation or direct-chute placement can safely receive and place concrete. Trucks arriving too quickly can queue on the street or jobsite. Trucks arriving too slowly can interrupt a continuous placement. The first calculator includes an optional interval field only to show the approximate schedule span; it does not determine the correct interval for the job.
Before the pour, coordinate plant-to-job travel time, expected traffic, site entry route, washout area, pump setup, chute reach, crew size, finishing sequence and the producer's dispatch plan. Weather can also affect placement rate. For hot- or cold-weather planning, use the Concrete Pour Temperature Calculator. If pumping is required, the Concrete Pump Size Calculator can support early equipment planning.
Measure the project and include separate deepened elements.
Confirm mix, usable truck payload, order increments and commercial terms.
Match truck spacing to pump, chute or crew placement capacity.
Confirm truck route, clearance, ground support, traffic and washout plan.
Recheck sequence and quantity with the producer before the pour.
ASTM C94/C94M is the principal ASTM specification covering ready-mixed concrete manufactured and delivered to a purchaser in a freshly mixed, unhardened state. The current ASTM listing states that the producer manufactures ready-mixed concrete and the purchaser buys it, and that purchaser requirements can govern when they differ from the standard's stated requirements. It also recognizes stationary mixers and truck mixers. The standard is broader than truck-count math; it addresses ready-mixed concrete quality and delivery requirements.
For a real project, specifications, contract documents and the producer's order ticket should control the concrete requirements. A calculator cannot decide concrete strength, slump, air content, aggregate size, admixtures, temperature requirements or acceptance criteria. It also cannot determine legal truck loading. Its role is to organize quantities so the contractor can have a more precise conversation with the ready-mix supplier.
A 24 yd³ project at 10 yd³ usable capacity becomes two full deliveries and one partial final delivery.
A concrete mixer is a heavy commercial vehicle, and a loaded truck needs a suitable route to the placement area. Do not assume that a residential driveway, lawn, septic area, utility trench, soft shoulder, temporary fill or small bridge can support a mixer. The contractor and supplier should review access before dispatch. If direct truck access is not suitable, a pump, conveyor, buggy or other placement method may be needed.
Also check overhead wires, tree limbs, gate width, turning radius, slopes, traffic control, public-road restrictions and space for trucks to enter and leave without unsafe backing. The fact that a calculator says “three trucks” does not mean three trucks should be parked on the site at once. Dispatch sequencing and staging must match the physical location.
Assume a project requires 17 cubic yards and the supplier confirms 10 cubic yards per usable load. The project requires two truck trips: one full 10-yard load and a final 7-yard load. If concrete is quoted at $165 per cubic yard, material cost is $2,805 before delivery and other charges. If a $150 delivery charge applies to each truck, delivery adds $300, bringing that simple modeled subtotal to $3,105.
If the supplier only applies a short-load fee when the final load is below 5 cubic yards, the 7-yard final load would not trigger that modeled fee. If the project instead required 13 cubic yards, the last truck would contain 3 cubic yards and could trigger the fee if the supplier's actual terms use that threshold. Use the calculator's cost mode only with the values from the producer's quote.
Use these related tools to complete a concrete takeoff and delivery plan:
The external references below are included for ready-mixed concrete standards and examples of current mixer equipment capacities. Equipment examples are not recommendations and do not establish the payload for your supplier's truck.
Common questions about ready-mix truck capacity, load counts, partial deliveries and concrete ordering.