Landscaping · updated 2026
Gravel Tonnage Calculator
Quarries may quote gravel by the ton while your project is measured in feet and inches. This gravel tonnage calculator converts length, width, and depth into cubic yards, then applies the selected gravel type density to estimate tons, 50-lb bag equivalents, material cost, and coverage. Density and prices are planning inputs marked TBD — verify with the supplier before ordering.
Use the main gravel calculator for cubic yards, delivery, and compaction options.
4–6 in is common for driveways; verify your base design
TBD — verify pickup or delivered price locally
Show the math
Volume = 40 × 12 × (4 ÷ 12) ÷ 27 = 5.93 yd³
Tons = 5.93 yd³ × 1.40 tons/yd³ = 8.30 tons
50-lb bags = 8.30 tons × 2,000 ÷ 50 = 332.0 bags (rounded up)
Material = 8.30 tons × your local price = $0
Tons versus cubic yards
A rectangular project starts with volume: length multiplied by width multiplied by depth in feet, divided by 27. That gives cubic yards. The tonnage step then applies the selected material density, so the same footprint can weigh differently when the gravel type changes.
Quarries may quote either unit. Keep the density and whether the quote is pickup or delivered with the price so you can compare offers without silently changing the material assumption.
How to use the gravel tonnage calculator
Measure the area, enter the finished depth, choose the closest gravel type, and enter your local price per ton. The calculator shows both the geometric cubic-yard result and the tonnage derived from the selected density.
The 50-lb bag equivalent is a comparison for small repairs. It is rounded up to whole bags and should not be treated as a recommendation for a driveway-sized order.
Gravel types and density
Pea gravel, crushed stone, crusher run, and river rock do not have one universal weight per yard. Grading, moisture, source, and compaction change the delivered weight. The density presets are planning values and remain TBD — verify with the quarry or landscape supplier.
Angular stone is generally chosen where interlock matters, while rounded stone is often chosen for decorative work. The calculator does not decide which material is appropriate for your site.
Depth and ordering
Driveways commonly use more depth than paths because the base carries vehicle loads. A soft subgrade, drainage problem, or heavy vehicle can change the required section; confirm the build-up with the project plan or installer.
Ask about minimum tonnage, tailgate placement, delivery access, and whether the supplier spreads the load. Those practical details can change the delivered cost even when the tonnage math is correct.
Methodology and assumptions
The calculator converts the entered footprint into cubic yards, multiplies by the selected tons-per-yard density, and rounds the 50-lb equivalent up to whole bags. Prices and density presets are planning inputs, not a delivery ticket.
What the numbers mean
The calculator converts your measurements into a practical purchase quantity using a documented coverage or spacing assumption.
Any whole-unit quantity is rounded up so the result does not leave you short during the project.
Use the cost range as a planning baseline and confirm the final quantity, availability, and delivery charge with your local supplier.
2026 material prices
Material, labor, coverage, and density defaults are TBD — verify with your local supplier or manufacturer before ordering. 2026 U.S. national averages. Prices vary by region and retailer — confirm locally before buying.
Pro tips
- Confirm whether the quarry quotes by ton or cubic yard and keep the density on the quote visible.
- Driveways often need 4–6 in over a compacted base; paths and patios may use less depending on the design.
- Angular crushed stone and crusher run lock together better than rounded pea gravel for traffic areas.
- Add any compaction allowance your supplier or installer specifies; it is separate from the geometric volume.
- Ask whether delivery is included, per load, or subject to a minimum order.
- Use the 50-lb bag result only as a small-project comparison; bulk delivery is usually the practical option for larger areas.
Common questions
Frequently asked questions
How many tons of gravel do I need?
Calculate cubic yards first, then multiply by the selected gravel density. Typical crushed stone is often planned at about 1.4 tons per cubic yard, but verify the supplier density and run your exact dimensions above.
What is the difference between a gravel calculator and a gravel tonnage calculator?
The underlying area-and-depth math is the same. A gravel calculator may lead with cubic yards, while a gravel tonnage calculator leads with tons because many quarries sell by weight.
How many tons is a cubic yard of gravel?
Typical gravel is often around 1.4 tons per cubic yard, with material variation commonly around 1.25–1.5. The type selector and density assumptions are marked TBD — verify.
How deep should a gravel driveway be?
A common planning range is 4–6 inches over a compacted base. Soft soil, drainage, traffic, and local construction details can require a different build-up.
How much does a ton of gravel cover?
Coverage depends on density and depth. At about 1.4 tons per cubic yard, one ton is roughly 0.7 cubic yards; at 2 inches that is about 100 square feet. Use the calculator for your depth.
Is pea gravel lighter than crushed stone?
It can be slightly less dense per cubic yard, but the difference depends on grading, moisture, and source. Select the material and verify the density on your supplier quote.
Related calculators
Planning estimates only. Prices are 2026 U.S. national averages and vary by region — confirm with your local supplier before buying.