Construction & estimating · Site operations
Aggregate and base-course tonnage calculator
Tonnes of road base, crushed rock or sand for an area and compacted thickness, with loose volume, truck loads and cost.
Standard: Compacted volume × density · loose volume · truck loads
Open the live calculator → All construction & estimating calculators
Inputs in the worked example
The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.
| Input | Value | Unit |
|---|---|---|
| Area | 640 | m² |
| Compacted thickness | 150 | mm |
| Compacted density | 2.15 | t/m³ |
| Loose density | 1.6 | t/m³ |
| Waste / over-run | 7 | % |
| Truck payload | 28 | t |
| Supply rate | 42 | $/t |
Worked example — results
| Result | Value | Unit |
|---|---|---|
| Compacted volume | 96.00 | m³ |
| Tonnes incl. waste | 220.85 | t |
| Loose volume | 138.03 | m³ |
| Truck loads | 8 | |
| Supply cost | $9,276 |
Method, formulas and assumptions
- t = A × thickness × ρc × (1 + waste)
- Loose volume = t / ρloose (stockpile size)
- Rates and productivities are example inputs. Replace them with supplier, plant-hire and crew figures for your site.
Related construction & estimating calculators
- Concrete pour planner — Number of agitator trucks, trucks needed in rotation, pour duration, finish time and cost for a concrete pour.
- Rebar cutting length and laps — Cutting length for straight, L, U or closed-link bars with bend deductions and hooks, the laps needed for…
- Compaction production and lifts — Number of lifts, roller output and days to place and compact a fill platform.
- Excavation dewatering estimate — Inflow to a dewatered excavation treated as an equivalent large-diameter well in an unconfined aquifer, with…
- Trench shoring take-off — Panels, strut rows and struts for a strutted trench, with excavation volume and hire cost.
- Truck and loader fleet balance — Truck cycle time, trucks needed to keep the loader busy, fleet production and hours to move a volume.
- Plant fuel and CO₂ — Diesel use, cost and CO₂ for a plant fleet from rated power, load factor and specific fuel consumption.
- Scaffold take-off (modular) — Component count for a single-run modular scaffold, with tie count and hire cost.
- Concrete maturity (strength in place) — Temperature–time factor and equivalent age from logged temperatures, and estimated in-place strength from a…
- Concrete mix design (ACI 211.1) — Batch quantities per m³ (water, cement, coarse and fine aggregate) by the ACI absolute-volume method.
For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.