Gravel Calculator | How much gravel do you need?
The calculator shows your excavation area is 5 m². Next, input the depth of the excavation as 15 cm. Instantly, the calculator tells you that you require 0.75 m³ of gravel, which weighs 1.26 tonnes. You can use the calculator in reverse, too! Say you can only acquire 1 tonne in the previous example.