Gravel Calculator
Calculate the volume and weight of gravel needed to cover an area at a given depth.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter your area's length, width, and desired gravel depth to find the volume and weight of gravel needed.
1600-1700 kg/m³ is typical for crushed stone gravel.
Your result
5
Volume
Weight (tonnes)8.25
Weight (kg)8,250
AI explanation
Formula
Volume = length × width × depth; weight = volume × densityWorked example
10m × 5m area, 10cm deep
| Field | Value |
|---|---|
| Area length (m) | 10 |
| Area width (m) | 5 |
| Depth (cm) | 10 |
| Gravel density (kg/m³) | 1650 |
| Volume | 5 |
| Weight (kg) | 8250 |
| Weight (tonnes) | 8.25 |
Assumptions
- Gravel density varies by type and moisture content — 1650 kg/m³ is a commonly cited average for crushed stone; check with your supplier for a more precise figure.
Frequently asked questions
How deep should a gravel driveway or path be?
5-10cm is typical for a decorative or walking path; a load-bearing driveway base often needs 15-20cm or more, sometimes in multiple compacted layers.
Is gravel usually sold by weight or volume?
Both, depending on the supplier — this calculator gives you both figures so you can order either way.
Does this account for compaction?
No — gravel compacts somewhat once laid and compacted, so ordering a small extra margin (5-10%) is common practice, similar to other material wastage allowances on this site.