Cubic Metres to Tonnes Asphalt Converter
Instantly calculate the weight of hot mix asphalt, tarmac and recycled asphalt in metric tonnes based on volume in cubic metres. Accurate for driveways, roads, and paving projects.
Calculate Your Asphalt Weight
Enter the volume of asphalt in cubic metres and select the material type below to get an instant, accurate conversion to metric tonnes.
Weight Converter
Enter your volume to see the estimated weight in tonnes
Calculate volume: Length (m) × Width (m) × Thickness (m)
Density varies based on aggregate mix, binder content, and compaction
Estimated Weight
Converted based on standard material densities
Asphalt Density Reference Chart
Standard average densities for different types of asphalt and tarmac. Use this to verify your manual calculations or adjust the estimator above.
| Asphalt Type | Density (Tonnes/m³) | Density (kg/m³) | Common Use |
|---|---|---|---|
| Dense Asphalt (Compacted) | 2.40 | 2400 | Main roads, heavy-duty surfaces |
| Hot Mix Asphalt (Standard) | 2.35 | 2350 | Driveways, car parks, footpaths |
| Loose Asphalt (Uncompacted) | 2.10 | 2100 | Freshly laid, pre-rolling |
| Recycled Asphalt / RAP | 1.80 | 1800 | Sub-base layers, temporary surfacing |
| Asphalt Millings | 1.75 | 1750 | Gravel driveway substitute, patching |
Asphalt Weight FAQ
Everything you need to know about converting asphalt volume to weight for your paving project.
On average, one cubic metre of compacted hot mix asphalt weighs between 2.30 and 2.50 metric tonnes. Loose, uncompacted asphalt is lighter, typically around 2.10 tonnes per cubic metre, because it contains more air voids before rolling.
Yes. Reclaimed Asphalt Pavement (RAP) and asphalt millings are generally lighter than fresh hot mix asphalt, weighing around 1.75 to 1.80 tonnes per cubic metre due to their looser, broken-up structure.
To calculate the volume in cubic metres (m³), measure the length, width, and thickness of the area in metres, then multiply them together: Volume = Length × Width × Thickness. For example, a driveway 10m long, 3m wide, and 0.05m (5cm) thick requires 1.5 m³ of asphalt.
Coverage depends on the compacted thickness. At a standard depth of 5cm (0.05m), 1 tonne of hot mix asphalt (approx. 2.35 t/m³) will cover approximately 8.5 square metres. Thicker layers reduce the coverage area per tonne.