Plan paving quantities quickly with flexible input modes. Switch units, include lifts, and waste easily. Get reliable tons, costs, and haul trips every time.
| Scenario | Area method | Inputs | Assumptions | Output (metric tonnes) |
|---|---|---|---|---|
| Parking lane resurfacing | Rectangle | Length 120 m, Width 8 m, Thickness 50 mm, Lifts 1 | Density 2320 kg/m3, Compaction 1.03, Waste 5% | ≈ 14.93 t |
| Small circular pad | Circle | Diameter 10 m, Thickness 60 mm, Lifts 1 | Density 2320 kg/m3, Compaction 1.02, Waste 4% | ≈ 11.63 t |
| Measured site area | Direct area | Area 2,500 ft2, Thickness 2 in, Lifts 1 | Density 145 lb/ft3, Compaction 1.03, Waste 6% | ≈ 20.27 t |
1) Area depends on the selected input mode:
A = L × WA = pi × (D/2)^2A and convert to m22) Total thickness: t_total = t_per_lift × lifts
3) Volume: V = A × t_total
4) Mass: m = V × rho × CF × (1 + waste%/100)
5) Tonnage: tonnes = m / 1000 (plus US and long ton conversions).
Accurate tonnage estimates reduce production delays, cold joints, and costly rework. This calculator converts geometric inputs into mass using thickness, density, compaction allowance, and waste. Treat the result as an ordering target, then align it with plant minimums, hauling distance, and placement rate to keep mats continuous.
Area and thickness drive volume, while density translates volume to mass. Field outcomes vary with mix type, air voids, aggregate structure, and temperature. If you are resurfacing, verify the planned lift thickness after milling. For multiple lifts, enter the thickness per lift and the number of lifts to capture total depth.
Waste covers edge losses, minor over‑runs, handwork, and truck cleanout. Compaction factor captures the difference between loose placement and compacted in‑place density, plus field variability. For tight control on large paving, keep waste modest and validate density from recent QC results.
Tonnage becomes actionable when converted to truck trips and cost. Enter a realistic truck capacity in metric tonnes based on legal loads and route restrictions. Cost per tonne can reflect plant price only, or include tack, traffic control, and placement if you manage full scope.
Example: Length 120 m, Width 8 m, Thickness 50 mm, Lifts 1, Density 2320 kg/m3, Compaction 1.03, Waste 5%. The calculator returns about 14.93 metric tonnes, about 17.0 m3, and roughly 1 truck trip if capacity is 20 t. Adjust density and allowances to match local practice.
Use the compacted density from your mix design or recent QC. If unknown, start around 2320 kg/m3 and refine using cores or plant and lab data for the same mix type.
Enter the planned compacted thickness per lift. The compaction factor then adds an ordering allowance for field variability rather than replacing correct thickness selection.
Small projects often need 3–7% due to handwork and edge trimming. Large continuous paving can be lower. Increase waste if access is tight, geometry is irregular, or multiple tie‑ins exist.
They are different weight units. One metric tonne equals 1000 kg, one US short ton equals 907.18474 kg, and one long ton equals 1016.0469 kg. Use the unit your supplier invoices.
Yes, but use the correct density for that specific mix. RAP content can change density and compaction behavior. Confirm with the producer or mix design rather than assuming a generic value.
Trips are the metric tonne result divided by truck capacity, rounded up. Use a realistic legal payload and consider route limits, paver feed rate, and plant cycle time for scheduling.
Split the surface into rectangles, triangles, or circles, calculate each area, then sum and enter the total in Direct area mode. This reduces errors compared with guessing a single dimension set.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.