Gravel Calculator
Estimate the tons and cubic yards of gravel needed to cover an area at a given depth
Results
Step-by-Step Calculation
Understanding Gravel Estimates
Whether you are building a driveway, laying a garden path, or creating a drainage bed, knowing how much gravel you need helps you order the right amount and avoid costly extra deliveries. Gravel is typically sold by the cubic yard for bulk delivery or by the ton, so this calculator gives you both volume and weight estimates.
Gravel Formulas:
- Volume (ft³): Length x Width x (Depth in inches / 12)
- Cubic Yards: Volume in ft³ / 27
- Tons: Cubic Yards x Density (default 1.4 tons/yd³)
Key Conversions:
- 1 cubic yard = 27 cubic feet
- 1 cubic yard of gravel weighs roughly 1.4 tons (varies by gravel type)
- 1 ton of gravel covers about 100 sq ft at 2 inches deep
Recommended Gravel Depths
| Application | Depth (inches) | Notes |
|---|---|---|
| Garden Path / Walkway | 2" - 3" | Light foot traffic |
| Drainage / French Drain | 4" - 6" | Use clean, angular gravel |
| Residential Driveway | 4" - 6" | Often layered with a base course |
| Heavy-Use Driveway | 8" - 12" | Multiple compacted layers |
Tip: Gravel compacts when laid, so order about 10% extra to account for settling and uneven ground.
Frequently Asked Questions
How much does a cubic yard of gravel weigh?
A cubic yard of gravel typically weighs about 1.4 tons (around 2,800 lbs), though this varies between roughly 1.2 and 1.7 tons depending on the gravel type, moisture, and stone size.
How do I convert cubic yards of gravel to tons?
Multiply the cubic yards by the gravel density. Using the default of 1.4 tons per cubic yard, 2.47 cubic yards equals about 3.46 tons.
How deep should gravel be for a driveway?
A typical residential gravel driveway uses 4 to 6 inches of gravel, often built up in compacted layers over a stable base for durability.
Related Calculators
Note: This calculator provides estimates based on standard formulas. Actual gravel requirements may vary due to gravel type, moisture content, compaction, and uneven ground. For large projects, consult your local gravel supplier for precise quantities.