Gravel Calculator
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Gravel Coverage Reference (Crushed Stone)
Cubic yards and tons by area and depth. Based on 2,800 lbs/yd³.
| Area (sq ft) | 2" Deep (yd³) | 4" Deep (yd³) | 4" Deep (tons) | 6" Deep (tons) |
|---|---|---|---|---|
| 100 | 0.62 | 1.23 | 1.73 | 2.59 |
| 200 | 1.23 | 2.47 | 3.46 | 5.19 |
| 400 | 2.47 | 4.94 | 6.91 | 10.37 |
| 500 | 3.09 | 6.17 | 8.64 | 12.96 |
| 1,000 | 6.17 | 12.35 | 17.28 | 25.93 |
| 2,000 | 12.35 | 24.69 | 34.57 | 51.85 |
How We Calculate This
This gravel calculator uses established formulas and industry-standard data to provide accurate estimates.
- Enter your specific values into the calculator fields above
- Our algorithm applies the relevant formulas using your inputs
- Results are calculated instantly in your browser — nothing is sent to a server
- Review the detailed breakdown to understand how each factor affects your result
These calculations are estimates based on standard formulas. For critical decisions, always consult a qualified professional.
How to Convert Oven Recipes to Air Fryer
Gravel is sold by the ton or cubic yard. Knowing the volume and weight helps you order the right amount and estimate delivery costs.
The basic rule:
- Volume: Area (sq ft) × Depth (inches) / 12 = cubic feet. Divide by 27 for cubic yards
- Weight varies by type: crushed stone ~2,800 lbs/yd³, pea gravel ~2,600 lbs/yd³, river rock ~3,000 lbs/yd³
- For driveways, use 4-6 inches of gravel. Compact in 2-inch lifts for best results
Always use landscape fabric under decorative gravel to prevent weed growth. For driveways, layer different sizes: larger crushed stone as a base (4"), then a finer top layer (2"). Compact each layer before adding the next.
When Would You Use This Calculator?
This gravel calculator is designed for anyone who needs quick, reliable estimates without complex spreadsheets or professional consultations.
- When you need a quick estimate before committing to a purchase or project
- When comparing different options or scenarios side by side
- When planning a budget and need to understand potential costs
- When you want to verify a quote or estimate you've received from a professional
- When teaching or learning about the concepts behind these calculations
Frequently Asked Questions
How much does a ton of gravel cover?
One ton of gravel covers approximately 80 square feet at 4 inches deep, 108 sq ft at 3 inches, or 160 sq ft at 2 inches. Coverage varies slightly by gravel type and size — smaller stones pack more tightly and cover slightly less area.
How much gravel do I need for a driveway?
A 10' x 40' driveway at 4 inches deep requires about 4.9 cubic yards or roughly 7 tons of gravel. For a proper gravel driveway, plan for 4-6 inches total depth in multiple layers: 3-4 inches of #57 stone base topped with 2 inches of finer gravel.
What type of gravel is best for driveways?
Crushed stone (#57 or #411) is best for driveways — angular pieces interlock and compact well. Top with a finer crusher run (#21A) for a smooth surface. Avoid round pea gravel for driveways — it shifts under tires and does not compact. River rock is decorative only.
How much does a cubic yard of gravel weigh?
Crushed stone: ~2,800 lbs (1.4 tons). Pea gravel: ~2,600 lbs (1.3 tons). River rock: ~3,000 lbs (1.5 tons). Lava rock: ~2,500 lbs (1.25 tons). Wet gravel can weigh 10-15% more. A dump truck typically carries 12-15 tons.
Should I put landscape fabric under gravel?
Yes, always use heavy-duty landscape fabric under decorative gravel and pathways. It prevents weed growth and stops gravel from sinking into the soil. Use commercial-grade fabric (not cheap weed barrier) and overlap seams by 6 inches. For driveways, geotextile fabric is even better.
How deep should gravel be for a patio or walkway?
Walkways: 2-3 inches of compacted gravel over landscape fabric. Patios: 3-4 inches. Use a finer gravel (#89 or pea gravel) for the surface and a coarser base layer for drainage. Edge with steel, aluminum, or stone edging to keep gravel contained.