Gravel for a 20×20 ft Patio at 3 Inches Deep
A 20×20 ft gravel patio at 3 inches deep requires approximately 3.7 cubic yards of material.
How to use this tool
- Enter the length and width of the area in feet.
- Enter the desired gravel depth in inches.
- The calculator returns cubic feet, cubic yards, and approximate tons.
A 20×20 pea gravel patio at 3 inches depth is a popular backyard project requiring about 3.7 cubic yards.
Frequently asked questions
- How much gravel do I need for a driveway?
- Driveways typically need 4–6 inches of gravel depth. Multiply length × width × depth (in feet) ÷ 27 for cubic yards. One cubic yard weighs about 1.4 tons.
- How many tons of gravel per cubic yard?
- Pea gravel and crushed stone weigh approximately 1.4 tons per cubic yard. Denser materials like limestone gravel can weigh up to 1.5 tons per cubic yard.