Asphalt Calculator
Calculate the volume and weight of asphalt needed to pave an area at a given thickness.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter your paving area's length, width, and thickness to find the asphalt volume and weight needed.
5-7.5cm is typical for a residential driveway asphalt layer.
2300-2500 kg/m³ is typical for compacted asphalt mix.
Your result
4.8
Weight (tonnes)
Volume2
Weight (kg)4,800
AI explanation
Formula
Volume = length × width × thickness; weight = volume × densityWorked example
10m × 4m driveway, 5cm thick
| Field | Value |
|---|---|
| Area length (m) | 10 |
| Area width (m) | 4 |
| Thickness (cm) | 5 |
| Asphalt density (kg/m³) | 2400 |
| Volume | 2 |
| Weight (kg) | 4800 |
| Weight (tonnes) | 4.8 |
Assumptions
- Asphalt is typically ordered by weight (tonnes) rather than volume — this calculator leads with weight for that reason.
- 2400 kg/m³ is a commonly cited average density for compacted asphalt mix; actual mix density varies by specification.
Frequently asked questions
How thick should a driveway's asphalt layer be?
5-7.5cm is typical for residential driveways; heavier-traffic areas may need a thicker layer over a proper compacted base.
Why is asphalt ordered by weight instead of volume?
Asphalt suppliers typically price and deliver by the tonne, since weight is easier to measure accurately at the plant and on delivery trucks.
Does this include the base/sub-base material?
No — this calculates the asphalt surface layer only. See the Gravel Calculator for base material quantities.