Gravel Calculator
Gravel Calculator
Enter the length, width, and depth of the area you're covering to find how much gravel to order — shown in both cubic yards (how it's typically ordered) and tons (how it's often priced by suppliers).
Gravel suppliers frequently quote and invoice by weight rather than volume, which is why this calculator converts the cubic-yard figure to an estimated tonnage using a standard conversion factor (roughly 1.4 tons per cubic yard for typical gravel) — a 20×10 ft area covered 4 inches deep works out to about 2.47 cubic yards, or roughly 3.46 tons. That conversion factor is an average and can shift somewhat depending on the specific gravel type and how tightly it's compacted, so treat the tonnage figure as a solid planning estimate and confirm the exact conversion your supplier uses before finalizing a large order.
- Imperial: Cubic Yards = (Length × Width × Depth in inches ÷ 12) ÷ 27; Tons = Cubic Yards × 1.4. Example: 20×10 ft at 4 in = 2.47 cubic yards ≈ 3.46 tons.
- Metric: Cubic Meters = Length × Width × (Depth in cm ÷ 100); Tonnes = Cubic Meters × 1.5. Example: 6×3 m at 10 cm = 1.8 m³ ≈ 2.7 tonnes.
- Density is an estimate in both systems — actual gravel weight varies by type and moisture content.
How deep should a gravel driveway be?
A common range is 4-6 inches for a base layer, sometimes with additional layers for heavier vehicle traffic — check local guidance for your specific use case.
Should I order extra gravel?
Yes — adding 5-10% extra is common practice to account for compaction settling and uneven ground.
Gravel Calculator
Enter the length, width, and depth of the area you're covering to find how much gravel to order — shown in both cubic yards (how it's typically ordered) and tons (how it's often priced by suppliers).
Gravel suppliers frequently quote and invoice by weight rather than volume, which is why this calculator converts the cubic-yard figure to an estimated tonnage using a standard conversion factor (roughly 1.4 tons per cubic yard for typical gravel) — a 20×10 ft area covered 4 inches deep works out to about 2.47 cubic yards, or roughly 3.46 tons. That conversion factor is an average and can shift somewhat depending on the specific gravel type and how tightly it's compacted, so treat the tonnage figure as a solid planning estimate and confirm the exact conversion your supplier uses before finalizing a large order.
- Imperial: Cubic Yards = (Length × Width × Depth in inches ÷ 12) ÷ 27; Tons = Cubic Yards × 1.4. Example: 20×10 ft at 4 in = 2.47 cubic yards ≈ 3.46 tons.
- Metric: Cubic Meters = Length × Width × (Depth in cm ÷ 100); Tonnes = Cubic Meters × 1.5. Example: 6×3 m at 10 cm = 1.8 m³ ≈ 2.7 tonnes.
- Density is an estimate in both systems — actual gravel weight varies by type and moisture content.
How deep should a gravel driveway be?
A common range is 4-6 inches for a base layer, sometimes with additional layers for heavier vehicle traffic — check local guidance for your specific use case.
Should I order extra gravel?
Yes — adding 5-10% extra is common practice to account for compaction settling and uneven ground.