Road base Volume Calculator
Estimate the volume and weight of road base needed to cover an area to a chosen depth. Enter length, width and depth, then add an allowance for…
8 of 8 free uses remaining today
Estimate the volume and weight of road base needed to cover an area to a chosen depth. Enter length, width and depth, then add an allowance for waste. Uses a typical density of 2 tonnes per cubic metre.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (length = 6 m, width = 3 m, depth = 100 mm, waste allowance = %5), the results are: volume needed 1.89 m³; approximate weight 3.78 tonnes.
Quick reference: length vs result
Reference table based on the example values; it is not your calculation result.
| Length (m) | Volume needed | Approximate weight |
|---|---|---|
| 3 | 0.95 m³ | 1.89 tonnes |
| 6 | 1.89 m³ | 3.78 tonnes |
| 12 | 3.78 m³ | 7.56 tonnes |
| 30 | 9.45 m³ | 18.90 tonnes |
| 60 | 18.90 m³ | 37.80 tonnes |
| 120 | 37.80 m³ | 75.60 tonnes |
Frequently asked questions
What formula does this calculator use?
Volume needed = length × width × depth ÷ 1000 × (1+waste ÷ 100); Approximate weight = vol × dens. Variables: length = length in m, width = width in m, depth = depth in mm, waste = waste allowance in %. Fixed values: dens = 2.
What do I need to enter?
You need length (m), width (m), depth (mm), waste allowance (%). Results update as you type.
What is an example result?
With the default inputs (length = 6 m, width = 3 m, depth = 100 mm, waste allowance = %5), the results are: volume needed 1.89 m³; approximate weight 3.78 tonnes.
What density does this use?
It assumes road base weighs about 2 tonnes per cubic metre. Moisture and grade change this, so confirm with your supplier before ordering.
Related Tools
View allRoom Paint Calculator
Estimate how much paint you need for the walls of a room. Enter the room size, ceiling height, the area of doors and windows and the number of coats.
Paint Calculator by Area
Work out how much paint you need for a floor, wall or surface. Enter the length and width, the number of coats and a waste allowance. Based on…
Primer Calculator by Area
Work out how much primer you need for a floor, wall or surface. Enter the length and width, the number of coats and a waste allowance. Based on…
Floor sealer Calculator by Area
Work out how much floor sealer you need for a floor, wall or surface. Enter the length and width, the number of coats and a waste allowance. Based…