Asphalt Volume & Weight Calculator
Calculate the volume and weight of asphalt (bituminous mix) required for a road, driveway, or pavement area based on dimensions and compacted thickness.
Results
What is it?
Asphalt tonnage is calculated as: Weight (tonnes) = Volume (m³) × Density (t/m³). The compacted density of asphalt varies by mix type — dense graded mixes are typically 2.28–2.35 t/m³. Adding a 5–10% wastage factor accounts for spreading, trimming, and compaction loss.
How to use
Enter the paved area dimensions and the designed compacted thickness (after compaction — typically 50–75 mm for a wearing course, 75–150 mm for a base course). Select the mix type to auto-fill density, or enter a custom value. Add a wastage percentage for ordering.
Example scenario
A car park 50 m × 30 m with 60 mm wearing course of dense graded asphalt (2.30 t/m³), 5% wastage. Volume = 50×30×0.06 = 90 m³. Net weight = 90×2.30 = 207 t. Order quantity = 207×1.05 ≈ 217 tonnes.
Pro tip
Asphalt is sold by the tonne — always order 5–10% extra for waste, trimming, and rework. For large projects, get a certified material test report (CTM) to confirm the actual density of the specific mix from the plant.