Gravel Calculator for Driveways and Paths
Gravel Calculator
Area to Cover
Depth of Gravel
- • Pathways: 2-3 inches (5-7.5 cm)
- • Driveways: 4-6 inches (10-15 cm)
- • Drainage: 3-4 inches (7.5-10 cm)
Gravel Type & Density
Smooth, rounded stones perfect for drainage and decoration
Common Uses:
Price (Optional)
Volume Needed
Enter dimensions to calculate
Total Weight
Enter dimensions to calculate
Quick Reference
The gravel calculator estimates how many cubic yards or tons of gravel, pea stone, crushed rock, or other aggregate you need for a driveway, pathway, drainage area, or landscaping project. Enter your area dimensions and desired depth to get the quantity in both volume and weight.
Gravel Volume and Weight
Cubic Yards = Length(ft) × Width(ft) × Depth(ft) / 27 Depth in feet = Depth in inches / 12 Tons = Cubic Yards × Density factor Typical density: 1.4-1.7 tons per cubic yard Example: 20×30 ft driveway at 4 inches: = 20 × 30 × (4/12) / 27 = 7.4 cu yd = 7.4 × 1.5 = 11.1 tons (approximate)
Gravel compacts by about 15-20% after settling and traffic. Order accordingly.
Recommended Depths by Application
| Application | Recommended Depth |
|---|---|
| Decorative landscaping | 2-3 inches |
| Pathway / walkway | 2-4 inches |
| Driveway (new) | 4-6 inches (base + surface) |
| Driveway (resurfacing) | 2 inches |
| French drain / drainage | 6-12 inches |
| Concrete base sub-layer | 4-6 inches compacted |
Frequently Asked Questions
What type of gravel should I use for a driveway?⌄
For a stable driveway, use two layers: a base layer of larger angular crushed stone (3/4 inch to 1.5 inch, crushed) that locks together and drains well, topped with a smaller finish layer (3/8 to 1/2 inch pea gravel or crusher run). Avoid smooth river rock as a base -- it migrates under traffic. Crusher run (crushed stone with fines) compacts well and is often the best single material for driveways.
How much does a ton of gravel cover?⌄
At 2 inches deep, one ton of typical gravel (about 0.67 cubic yards) covers approximately 100 square feet. At 4 inches, it covers about 50 square feet. A cubic yard of gravel weighs 1.4-1.7 tons and covers 81 square feet at 4 inches depth.
Does gravel need edging?⌄
Edging is strongly recommended for pathways and driveways. Without edging, gravel spreads to surrounding areas over time, especially with vehicle traffic or rain. Plastic landscape edging, steel edging, or timber borders contain the gravel. Proper edging also creates a clean visual line between the gravel area and lawn or planting beds.
Is gravel low maintenance?⌄
Relatively, but not maintenance-free. Gravel can develop ruts under vehicle traffic and may need periodic raking and leveling. Weeds can grow through loose gravel (landscape fabric underneath helps). Gravel can be displaced by heavy rain. Every few years, you may need to add fresh material to replenish what has settled or migrated.