Calculate tons and cubic yards of gravel needed for driveways, paths, drainage, and landscaping projects.
How much gravel for a 10x10 area? For a 10x10 area (100 sq ft) at 3 inches deep, you'll need about 0.93 cubic yards of gravel (about1.25 tons of crushed stone). With 15% compaction and 10% waste, that's about 1.18 cubic yards or 1.6 tons total.
Calculating gravel accurately prevents costly over-ordering and ensures proper drainage and stability for driveways, paths, and landscaping. In practice, most people underestimate by 15-20% because they forget about compaction (gravel settles), spillage, and uneven ground. Our gravel calculator accounts for different gravel types (crushed stone, pea gravel, river rock), compaction factors (10-20% for settling), and waste allowances. Whether you're building a driveway, creating a drainage base, or landscaping a garden, this tool converts between cubic yards and tons based on material density. Developed with input from professional landscapers and contractors, it helps you order the right amount the first time-saving money and avoiding multiple deliveries. Enter your project dimensions below to get precise estimates in both tons and cubic yards.
Measure the length and width of the area to be covered with gravel. For circular areas (like around trees), measure the diameter.
Decide how deep you want the gravel layer. Typical depths:
Choose the type of gravel you plan to use. Different types have different weights per cubic yard, affecting tonnage calculations.
Include 10-20% for compaction (gravel settles over time) and 5-10% for waste (spillage, uneven distribution).
Click "Calculate Gravel Needs" to get results in tons and cubic yards.
Let's calculate the gravel needed for a typical 50x10 foot driveway with 3 inches of crushed stone:
You would need approximately 5.85 cubic yards or about 7.9 tons of crushed stone for a 50x10 driveway with 3-inch depth.
Pro Tip: Gravel is typically sold by the ton, but delivered by the cubic yard. Always confirm with your supplier whether they measure by weight or volume, and what their conversion factor is.
Patios require a solid gravel base under pavers or concrete slabs. Let's calculate gravel for a 12x16 foot patio with 6-inch compacted base:
You would need approximately 4.7 cubic yards or about 6.1 tons of #57 stone for a 12x16 patio with 6-inch compacted base.
Pro Tip: For patio bases, use angular crushed stone (#57 or #304) that locks together when compacted. Avoid rounded gravel like pea gravel or river rock-they shift under load. If installing pavers over this base, you'll also need 1 inch of sand bedding (calculate with our paver calculator). For concrete slabs over gravel base, see our concrete calculator. For detailed driveway depth guidelines, see our gravel driveway depth guide.
Understanding the difference between tons and cubic yards is crucial for ordering gravel correctly. Suppliers use both measurements, and confusion leads to over-ordering or shortages.
| Gravel Type | Weight per Cubic Yard | Tons per Cubic Yard | Cubic Yards per Ton |
|---|---|---|---|
| Crushed Stone (1"-2.5") | 2,700 pounds | 1.35 tons | 0.74 yards |
| #57 Stone (3/4"-1") | 2,600 pounds | 1.30 tons | 0.77 yards |
| Pea Gravel (3/8") | 2,400 pounds | 1.20 tons | 0.83 yards |
| River Rock (1"-3") | 2,500 pounds | 1.25 tons | 0.80 yards |
| #304 Limestone (with fines) | 2,800 pounds | 1.40 tons | 0.71 yards |
Pro Tip: When getting quotes, provide both cubic yards and tons to ensure accurate pricing. Some suppliers charge by the ton, others by the yard. Knowing both measurements lets you compare prices accurately and avoid conversion surprises.
Need to calculate your project? Use our gravel calculator for both cubic yard and ton estimates. For related projects, check our concrete calculator for slab installations or paver calculator for patio bases.
Gravel quantity depends on area, depth, gravel type, and compaction. Here's a simple formula to estimate:
Cubic Yards = (Length (ft) x Width (ft) x Depth (in) / 12) / 27
Tons = Cubic Yards x Weight per Yard (tons)
Add 15-20% for compaction and 5-10% for waste, then round up to the nearest 1/2 yard when ordering.
For common areas at 3 inches deep (standard for driveways) using crushed stone (1.35 tons/yard):
| Area (sq ft) | Depth (inches) | Cubic Yards | Tons Needed |
|---|---|---|---|
| 100 (10x10) | 3 | 0.93 | 1.25 |
| 200 (10x20) | 3 | 1.85 | 2.50 |
| 300 (15x20) | 3 | 2.78 | 3.75 |
| 400 (20x20) | 3 | 3.70 | 5.00 |
| 500 (20x25) | 3 | 4.63 | 6.25 |
Note: Based on crushed stone at 1.35 tons per cubic yard, no waste or compaction included. Add 15-20% for compaction and 5-10% for waste.
Crushed Stone (1"-2.5"): Best for driveways and high-traffic areas. Locks together when compacted.
Pea Gravel (3/8"): Smooth, decorative, good for paths and playgrounds but shifts under weight.
River Rock (1"-3"): Round stones for drainage and decoration. Poor for driveways as it doesn't compact well.
#57 Stone (3/4"-1"): Versatile for drainage, concrete mixes, and base material.
Our calculator automatically adjusts for these different gravel types and their specific weights per cubic yard.
Gravel prices vary by type, region, and quantity, but these estimates will help you budget accurately. Understanding costs helps you decide between gravel types and plan project financing.
| Gravel Type | Price per Ton | Price per Cubic Yard | Best Use |
|---|---|---|---|
| Crushed Stone (1"-2.5") | $25-$40 | $30-$50 | Driveways, base material |
| Pea Gravel (3/8") | $35-$50 | $45-$65 | Paths, playgrounds, decorative |
| River Rock (1"-3") | $60-$100 | $75-$125 | Drainage, landscaping |
| #57 Stone (3/4"-1") | $30-$45 | $35-$55 | Drainage, concrete mixes |
| #304 Limestone | $25-$35 | $30-$45 | Driveway base, compacting |
Pro Tip: Get quotes from 2-3 local suppliers. Prices can vary significantly. Ask about volume discounts and delivery minimums. Always order 10-15% extra for compaction and waste.
Calculate your exact gravel needs with our gravel calculator above, then use these cost ranges to budget your project. For concrete projects that may need gravel base, see our concrete calculator. For paver installations, check our paver calculator for base material requirements.
Avoid these errors that lead to wasted money or insufficient material:
Gravel settles 10-20% after installation and traffic. Not accounting for compaction means your finished surface will be too thin after settling.
Different gravel types have different weights (2,500-2,800 lb/yard). Using a standard "1.25 tons/yard" for all types can cause 10-15% errors.
A proper gravel driveway needs 6-9 inches total (4-6" base layer + 2-3" surface). Many DIYers install only 2-3 inches total, leading to potholes.
On sloped areas, gravel depth varies. Calculate based on average depth, not minimum depth, or you'll run short.
Suppliers may sell by the ton but deliver by the yard. Know your conversion: 1 cubic yard of crushed stone about 1.35 tons.
Pro Tip: Our calculator handles compaction factors, material weights, and unit conversions automatically-eliminating these common mistakes.
While our calculator provides accurate estimates for planning and material ordering, there are situations where professional input is essential:
The bottom line: Use this calculator for material estimates on typical residential projects (driveways, paths, drainage). For anything commercial, structural, or environmentally sensitive-consult a licensed professional. The calculator gives you numbers to discuss with your contractor, not a substitute for professional judgment.
Gravel projects look simple on paper, but jobsite realities demand practical adjustments. Here's what professional landscapers and contractors know beyond basic calculations:
Landscapers see these mistakes every season-here's the real-world impact of getting gravel quantities wrong:
Most people underestimate by 15-20%. If your ground is soft, double the base depth-clay soils need 8 inches, not 4. If you're on a slope, add 25-50% more material. When the forecast says rain, delay delivery-wet gravel is impossible to spread evenly. If you're between truck sizes, order the larger one-you'll use it for maintenance. And never skip the fabric-it's the difference between a 1-year and 10-year driveway.
Bottom line: Use the calculator for the baseline, then adjust for your specific site conditions. When in doubt, over-order-it's cheaper to have leftover gravel than to pay for a second delivery fee. But be smart: 10-15% extra is insurance; 50% extra is waste.
Standard gravel calculations assume a flat, rectangular area with uniform depth. Real projects often deviate-here's how to adjust for common curveballs.
Remember: These adjustments are why professionals always order extra gravel. Use the calculator to get your baseline, then layer on these real-world factors for a bulletproof estimate.
Professional insights to ensure your gravel installation lasts and performs well:
Following these professional tips will ensure your gravel project is durable, attractive, and cost-effective.
It depends on the gravel type:
For a gravel driveway:
Compaction factor accounts for gravel settling over time (10-20%). Waste factor accounts for spillage during delivery/spreading, uneven distribution, and measurement errors (5-10%). We recommend using both for accurate estimates.
For irregular shapes:
Yes, landscape fabric is recommended for:
Crushed stone (1"-2.5") is best for driveways because it locks together when compacted, creating a stable surface. Avoid pea gravel or river rock for driveways-they shift under vehicle weight and don't compact well. For heavy traffic, use #57 stone or #304 limestone with fines that help bind the material.
Most gravel driveways need topping up every 2-3 years. Factors affecting gravel loss: traffic volume, weather, drainage, and original depth. Add 1-2 inches of fresh gravel annually in high-traffic areas, or 2-3 inches every 2-3 years for typical residential use.
Yes, but it's not recommended long-term. Without landscape fabric, gravel sinks into soil, weeds grow through, and drainage suffers. For a professional installation: 1) Excavate 2-3 inches, 2) Install woven landscape fabric, 3) Add and compact gravel in layers.
Regular maintenance extends gravel life: 1) Grade the surface every 3-6 months to redistribute gravel, 2) Fill potholes with fresh gravel and compact, 3) Control weeds with herbicide or manual removal, 4) Add new gravel every 2-3 years, 5) Ensure proper drainage to prevent washouts.