Planning guide
What is gravel?
Gravel is graded natural or crushed stone used for drainage, decorative cover, driveways, and structural base courses. Angular crushed products lock together; rounded gravel moves more freely.
How this calculation works
The calculator finds the rectangular volume at the installed depth, then estimates weight using a typical bulk density. Supplier gradation and moisture can change actual tonnage.
Common measurement mistakes
- Selecting rounded stone for a load-bearing base
- Skipping compaction allowance
- Measuring depth before removing soft soil
Professional tips
- Use geotextile where separation from soil is needed
- Compact base gravel in layers
- Confirm truck access before scheduling delivery
Gravel Calculator FAQs
What gravel depth should I use?
Paths commonly use 2–3 inches (5–8 cm) of finish gravel over a prepared base. Driveway base depth depends on soil, drainage, climate, and vehicle loads.
Should I use crushed or rounded gravel?
Angular crushed gravel interlocks and is usually better for compacted bases and driveways. Rounded gravel moves more freely and is better suited to drainage or decorative applications.
Does gravel volume change after compaction?
Yes. Base gravel consolidates as voids close during compaction. Use the material allowance as a planning aid and confirm compacted coverage with the supplier.