Asphalt Calculator
Estimate Tonnage, Volume & CostWork out exactly how much asphalt you need for your driveway, car park or road project anywhere in Australia. Enter the length, width and thickness below to get an instant estimate of volume, weight in tonnes, and material cost.
Dimensions & mix properties
This calculator gives a material estimate based on standard hot mix density. Actual density varies by mix design — for an exact quantity and price, get a free quote from our team.
Why use an asphalt tonnage calculator
Whether you're a homeowner planning a new driveway in Brisbane, a builder quoting a car park in Melbourne, or a contractor estimating a road resurfacing job anywhere in Australia, getting the asphalt quantity right saves time and prevents costly over-ordering or shortfalls on-site. This asphalt volume calculator uses the same engineering formulas contractors rely on, so you can check quantities before you order hot mix or request a quote.
How the calculator works
The calculator converts your site measurements into area and volume, then applies asphalt density to estimate total weight.
Calculate area
Area is length multiplied by width.
Calculate volume
Volume is area multiplied by thickness, with thickness converted from millimetres to metres.
Calculate weight
Volume is multiplied by asphalt density to get total tonnage.
Estimate cost (optional)
If you enter a price per tonne, the calculator multiplies it against total weight.
How much area does one tonne of asphalt cover?
Based on standard hot mix density (2,400 kg/m³):
| Compacted thickness | Coverage per tonne |
|---|---|
| 25mm | ≈ 17 m² |
| 50mm | ≈ 8.5 m² |
| 75mm | ≈ 5.7 m² |
| 100mm | ≈ 4.3 m² |
Thickness requirements differ by application, see our guides to asphalt driveways and car park construction for recommended depths.
Frequently Asked Questions
What density should I use if I'm not sure?
2,400 kg/m³ is a standard default for compacted hot mix asphalt and works for most residential and light commercial estimates.
What thickness should I enter for a driveway?
Most residential driveways use 50–75mm. For commercial areas and car parks, see our car park construction guide for load-specific depths.
Does this include installation and labour cost?
No, it estimates material weight only. For a full cost breakdown, see our asphalt driveway cost guide.
I need to calculate bitumen for a spray seal, not asphalt, is this the right tool?
No — use our separate bitumen calculator, which is built for spray seal application rates rather than full-depth asphalt mix.
Can this be used for repairs or resurfacing?
Yes, for estimating material on a defined area. For patch repairs or existing surface work, see our driveway repair and resurfacing pages.
Get in Touch
- 07 3180 8809
- info@aussieasphalts.com.au
- 29/97 Creek Street Brisbane City QLD 4000
- Mon - Fri 9:00 - 18:00 (Saturday & Sunday - Closed)
Get Your Free Quote In Minutes Today
Submit your information and receive a comprehensive quote within one business day. We handle residential and commercial projects with the same commitment to quality and customer satisfaction.