Enter your length, width and thickness to estimate the asphalt volume, weight in tonnes, and material cost for your driveway, car park or road project, before you call us for a firm quote.
This is a material estimate based on a standard hot mix density and doesn't include base preparation, labour or delivery. For an exact quantity and fixed price, request a free quote from our Perth or Melbourne team.
Asphalt & Bitumen Civils has been laying driveways, car parks and roads across Perth for over 40 years as a family-owned contractor. One thing that hasn't changed in that time: jobs run smoother when the quantity is right from the start. Order too little hot mix and you're left with a visible joint and a second delivery; order too much and you're paying for asphalt that never goes down. This calculator uses the same length × width × thickness × density method our estimators use for a first-pass figure, so you know roughly what you're working with before you request a free quote.
Four simple steps turn your site measurements into a material estimate.
Area is length multiplied by width.
Area is multiplied by thickness, with thickness converted from millimetres to metres.
Volume is multiplied by asphalt density to get total tonnage.
If you enter a price per tonne, it's multiplied against total weight.
Based on the standard trade estimate of 2,400 kg/m³. Actual coverage will shift with your mix design and compaction.
| Compacted thickness | Approx. coverage per tonne | Typically used for |
|---|---|---|
| 25mm | ≈ 17 m² | Thin overlays, patch repairs |
| 40–50mm | ≈ 8.5–10 m² | Residential driveways, pathways |
| 75mm | ≈ 5.7 m² | Light commercial areas |
| 100mm+ | ≈ 4.3 m² or less | Car parks, roads, heavy traffic |
Exact depth depends on subgrade and expected traffic — our team confirms this on-site before quoting.
A driveway, a car park and a road all carry different loads, so they're not laid to the same spec. These are the jobs we quote most often in Perth:
Residential-grade asphalt sized for cars and light vehicles, finished for kerb appeal.
See driveway paving →Commercial paving built to handle sustained traffic and repeated vehicle loading.
See car park paving →Slip-resistant asphalt pathways for parks, schools and private property.
See pathway paving →A different process to full-depth asphalt — priced by area, not tonnage.
See spray seal bitumen →A cost-efficient, sustainable option for resurfacing and base layers.
See recycled asphalt →2,400 kg/m³ is the trade estimate commonly used for compacted hot mix asphalt, and it's a reasonable default for driveways and light commercial areas. Actual density depends on the mix and aggregate used, so treat the tonnage figure as an estimate rather than a final order quantity.
Residential driveways are commonly laid around 40–50mm compacted, though the right depth depends on your subgrade and expected vehicle loads. See our driveway paving or ask our estimators to confirm the spec for your site.
No, it estimates asphalt material only. Site preparation, base material, labour and delivery are quoted separately once we understand your site conditions via a free quote request.
Not quite, this calculator is built for full-depth asphalt. Spray seal is priced by area and application rate rather than compacted volume. See our hot spray and seal bitumen page or contact us directly.
Send us your dimensions and we'll come back with a firm, no-obligation quote.
24 Baal St, Palmyra WA 6157 · Mon–Sat 9am–7pm (Sundays closed)
Call the Perth teamFill In The Form Below Or Call Us Now On (08) 6558 0552
