Enter the area dimensions, depth, and gravel type to instantly calculate the required volume, weight, and number of bags. Pure front-end processing — no data uploaded to any server.
Results
FAQ
How deep should I lay gravel?
Driveways typically need 15-20cm, walkways and patios 5-10cm, and drainage layers 10-15cm. This tool supports custom depth for any project requirement.
Do different gravels have different densities?
Yes. Common gravel densities range from 1.4-1.8 t/m³. Decomposed granite is denser (~1.68), while pea gravel is lighter (~1.5). Selecting the correct type improves accuracy.
Does the result include waste?
No. This tool calculates the theoretical amount. We recommend adding 5%-10% extra for compaction, waste, and uneven spreading during actual construction.
Is my data safe?
Absolutely. This tool runs entirely in your browser. All calculations are performed locally — no data is uploaded to any server.
How to Use the Gravel Calculator
- Select gravel type — Density is auto-filled, or enter a custom value
- Choose area shape — Rectangle, circle, or trapezoid
- Enter dimensions and depth — Input the area dimensions and gravel depth
- View results — Instantly see volume, weight, and bag count